LegalizeIntegerTypes.cpp revision 268637ed0f34e10e4125e94c44ff3e2975a19166
169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----- LegalizeIntegerTypes.cpp - Legalization of integer types -------===// 2cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner// 3cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner// The LLVM Compiler Infrastructure 4cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner// 8cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 9cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner// 1069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// This file implements integer type expansion and promotion for LegalizeTypes. 1169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Promotion is the act of changing a computation in an illegal type into a 1269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// computation in a larger type. For example, implementing i8 arithmetic in an 1369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// i32 register (often needed on powerpc). 1469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Expansion is the act of changing a computation in an illegal type into a 1578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands// computation in two identical registers of a smaller type. For example, 1669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// implementing i64 arithmetic in two i32 registers (often needed on 32-bit 1769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// targets). 18cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner// 19cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 20cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 21cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#include "LegalizeTypes.h" 22c82bf9b268eb63f7cf6f435d9ea222ddb8e3c5a8Mon P Wang#include "llvm/CodeGen/PseudoSourceValue.h" 237d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin#include "llvm/Support/ErrorHandling.h" 24fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman#include "llvm/Support/raw_ostream.h" 25cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattnerusing namespace llvm; 26cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 27cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 2869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Result Promotion 29cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 30cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 3169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// PromoteIntegerResult - This method is called when a result of a node is 3269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// found to be in need of promotion to a larger type. At this point, the node 3369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// may also have invalid operands or may have other results that need 3469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// expansion, we just know that (at least) one result needs promotion. 3569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::PromoteIntegerResult(SDNode *N, unsigned ResNo) { 36d765353da89988e949fd4c021d8860f36ab7c392David Greene DEBUG(dbgs() << "Promote integer result: "; N->dump(&DAG); dbgs() << "\n"); 379fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands SDValue Res = SDValue(); 3869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 39126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands // See if the target wants to custom expand this node. 40f43071beddb7ed5b2fd7d2f06c4130460616a13dDuncan Sands if (CustomLowerNode(N, N->getValueType(ResNo), true)) 411607f05cb7d77d01ce521a30232faa389dbed4e2Duncan Sands return; 42126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 4369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (N->getOpcode()) { 4469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: 4569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands#ifndef NDEBUG 46d765353da89988e949fd4c021d8860f36ab7c392David Greene dbgs() << "PromoteIntegerResult #" << ResNo << ": "; 47d765353da89988e949fd4c021d8860f36ab7c392David Greene N->dump(&DAG); dbgs() << "\n"; 4869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands#endif 49c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to promote this operator!"); 509fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::AssertSext: Res = PromoteIntRes_AssertSext(N); break; 519fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::AssertZext: Res = PromoteIntRes_AssertZext(N); break; 529fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::BIT_CONVERT: Res = PromoteIntRes_BIT_CONVERT(N); break; 539fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::BSWAP: Res = PromoteIntRes_BSWAP(N); break; 549fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::BUILD_PAIR: Res = PromoteIntRes_BUILD_PAIR(N); break; 559fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::Constant: Res = PromoteIntRes_Constant(N); break; 5600ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang case ISD::CONVERT_RNDSAT: 579fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands Res = PromoteIntRes_CONVERT_RNDSAT(N); break; 589fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::CTLZ: Res = PromoteIntRes_CTLZ(N); break; 599fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::CTPOP: Res = PromoteIntRes_CTPOP(N); break; 609fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::CTTZ: Res = PromoteIntRes_CTTZ(N); break; 61bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::EXTRACT_VECTOR_ELT: 629fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands Res = PromoteIntRes_EXTRACT_VECTOR_ELT(N); break; 639fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::LOAD: Res = PromoteIntRes_LOAD(cast<LoadSDNode>(N));break; 649fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SELECT: Res = PromoteIntRes_SELECT(N); break; 659fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SELECT_CC: Res = PromoteIntRes_SELECT_CC(N); break; 669fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SETCC: Res = PromoteIntRes_SETCC(N); break; 679fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SHL: Res = PromoteIntRes_SHL(N); break; 688d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands case ISD::SIGN_EXTEND_INREG: 699fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands Res = PromoteIntRes_SIGN_EXTEND_INREG(N); break; 709fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SRA: Res = PromoteIntRes_SRA(N); break; 719fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SRL: Res = PromoteIntRes_SRL(N); break; 729fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::TRUNCATE: Res = PromoteIntRes_TRUNCATE(N); break; 739fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::UNDEF: Res = PromoteIntRes_UNDEF(N); break; 749fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::VAARG: Res = PromoteIntRes_VAARG(N); break; 75bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 7669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SIGN_EXTEND: 7769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ZERO_EXTEND: 789fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::ANY_EXTEND: Res = PromoteIntRes_INT_EXTEND(N); break; 79bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 8069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_SINT: 819fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::FP_TO_UINT: Res = PromoteIntRes_FP_TO_XINT(N); break; 8269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 83927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP32_TO_FP16:Res = PromoteIntRes_FP32_TO_FP16(N); break; 84927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov 8569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AND: 8669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::OR: 8769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::XOR: 8869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ADD: 8969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SUB: 909fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::MUL: Res = PromoteIntRes_SimpleIntBinOp(N); break; 9169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SDIV: 939fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SREM: Res = PromoteIntRes_SDIV(N); break; 9469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::UDIV: 969fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::UREM: Res = PromoteIntRes_UDIV(N); break; 978ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 98253174bf50c932abaa680f465e2888c0e5272267Bill Wendling case ISD::SADDO: 999fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SSUBO: Res = PromoteIntRes_SADDSUBO(N, ResNo); break; 10074c376529101acbe141a256d0bf23a44eb454c84Bill Wendling case ISD::UADDO: 1019fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::USUBO: Res = PromoteIntRes_UADDSUBO(N, ResNo); break; 10274c376529101acbe141a256d0bf23a44eb454c84Bill Wendling case ISD::SMULO: 1039fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::UMULO: Res = PromoteIntRes_XMULO(N, ResNo); break; 104b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 1050b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_ADD: 1060b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_SUB: 1070b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_AND: 1080b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_OR: 1090b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_XOR: 1100b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_NAND: 1110b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_MIN: 1120b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_MAX: 1130b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_UMIN: 1140b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_UMAX: 1150b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_SWAP: 1169fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands Res = PromoteIntRes_Atomic1(cast<AtomicSDNode>(N)); break; 117b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 1180b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_CMP_SWAP: 1199fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands Res = PromoteIntRes_Atomic2(cast<AtomicSDNode>(N)); break; 12069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 12169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1229fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands // If the result is null then the sub-method took care of registering it. 1239fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands if (Res.getNode()) 1249fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands SetPromotedInteger(SDValue(N, ResNo), Res); 12569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 12669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 127475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertSext(SDNode *N) { 12895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Sign-extend the new bits, and continue the assertion. 129c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = SExtPromotedInteger(N->getOperand(0)); 130786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::AssertSext, N->getDebugLoc(), 131786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op.getValueType(), Op, N->getOperand(1)); 13295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 13395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 134475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertZext(SDNode *N) { 13595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Zero the new bits, and continue the assertion. 136c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = ZExtPromotedInteger(N->getOperand(0)); 137786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::AssertZext, N->getDebugLoc(), 138786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op.getValueType(), Op, N->getOperand(1)); 13995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 14095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 141b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Atomic1(AtomicSDNode *N) { 142b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op2 = GetPromotedInteger(N->getOperand(2)); 1437fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands SDValue Res = DAG.getAtomic(N->getOpcode(), N->getDebugLoc(), 144786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen N->getMemoryVT(), 1450b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman N->getChain(), N->getBasePtr(), 146b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Op2, N->getSrcValue(), N->getAlignment()); 147b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // Legalized the chain result - switch anything that used the old chain to 148b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // use the new one. 149b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 150b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands return Res; 151b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands} 152b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 153b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Atomic2(AtomicSDNode *N) { 154b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op2 = GetPromotedInteger(N->getOperand(2)); 155b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op3 = GetPromotedInteger(N->getOperand(3)); 156fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Res = DAG.getAtomic(N->getOpcode(), N->getDebugLoc(), 157f8d3ec2c5725a2010f11de4ba78f6127712a5fe7Dale Johannesen N->getMemoryVT(), N->getChain(), N->getBasePtr(), 158b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Op2, Op3, N->getSrcValue(), N->getAlignment()); 159b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // Legalized the chain result - switch anything that used the old chain to 160b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // use the new one. 161b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 162b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands return Res; 163b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands} 164b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 165475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BIT_CONVERT(SDNode *N) { 166475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InOp = N->getOperand(0); 167e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InVT = InOp.getValueType(); 16823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NInVT = TLI.getTypeToTransformTo(*DAG.getContext(), InVT); 169e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OutVT = N->getValueType(0); 17023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NOutVT = TLI.getTypeToTransformTo(*DAG.getContext(), OutVT); 171786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 17269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 17369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (getTypeAction(InVT)) { 17469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: 17569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(false && "Unknown type action!"); 17669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 17769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case Legal: 17869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 17969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case PromoteInteger: 18047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands if (NOutVT.bitsEq(NInVT)) 18169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The input promotes to the same size. Convert the promoted value. 1827fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, dl, 183786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NOutVT, GetPromotedInteger(InOp)); 18469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 1854fc4fd657d4266059dac3849133a3a351b03d99dDuncan Sands case SoftenFloat: 18669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the integer operand by hand. 187786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT, GetSoftenedFloat(InOp)); 18869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandInteger: 18969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandFloat: 19069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 191f4e4629ee8c218f892ad8ae3e182fe40bc160895Duncan Sands case ScalarizeVector: 19269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert the element to an integer and promote it by hand. 193786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT, 19469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands BitConvertToInteger(GetScalarizedVector(InOp))); 19587c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang case SplitVector: { 19669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // For example, i32 = BIT_CONVERT v2i16 on alpha. Convert the split 19769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // pieces of the input into integers and reassemble in the final type. 198475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 19969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetSplitVector(N->getOperand(0), Lo, Hi); 20069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Lo = BitConvertToInteger(Lo); 20169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Hi = BitConvertToInteger(Hi); 20269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 20369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 20469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 20569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 206786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen InOp = DAG.getNode(ISD::ANY_EXTEND, dl, 207adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getIntegerVT(*DAG.getContext(), 208adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng NOutVT.getSizeInBits()), 20969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands JoinIntegers(Lo, Hi)); 210786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, InOp); 21169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 21287c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang case WidenVector: 21387c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang if (OutVT.bitsEq(NInVT)) 21487c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang // The input is widened to the same size. Convert to the widened value. 215786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::BIT_CONVERT, dl, OutVT, GetWidenedVector(InOp)); 21687c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang } 21769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 218aad3460086a1b29c55f7490c6d8743ea4e53f07dEli Friedman return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT, 219aad3460086a1b29c55f7490c6d8743ea4e53f07dEli Friedman CreateStackStoreLoad(InOp, OutVT)); 22069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 22169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 222475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BSWAP(SDNode *N) { 223475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 224e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getValueType(0); 225e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Op.getValueType(); 226786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 227c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 228c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 229786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SRL, dl, NVT, DAG.getNode(ISD::BSWAP, dl, NVT, Op), 23092abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(DiffBits, TLI.getPointerTy())); 231c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands} 232c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 233475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BUILD_PAIR(SDNode *N) { 234bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The pair element type may be legal, or may not promote to the same type as 235bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // the result, for example i14 = BUILD_PAIR (i7, i7). Handle all cases. 236786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), 23723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)), 238bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands JoinIntegers(N->getOperand(0), N->getOperand(1))); 23969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 24069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 241475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_Constant(SDNode *N) { 242e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 243b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen // FIXME there is no actual debug info here 244b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen DebugLoc dl = N->getDebugLoc(); 245bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Zero extend things like i1, sign extend everything else. It shouldn't 246bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // matter in theory which one we pick, but this tends to give better code? 247bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Opc = VT.isByteSized() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 24823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson SDValue Result = DAG.getNode(Opc, dl, TLI.getTypeToTransformTo(*DAG.getContext(), VT), 249a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands SDValue(N, 0)); 250bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(isa<ConstantSDNode>(Result) && "Didn't constant fold ext?"); 251bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Result; 25269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 25369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 25400ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P WangSDValue DAGTypeLegalizer::PromoteIntRes_CONVERT_RNDSAT(SDNode *N) { 25500ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang ISD::CvtCode CvtCode = cast<CvtRndSatSDNode>(N)->getCvtCode(); 25600ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang assert ((CvtCode == ISD::CVT_SS || CvtCode == ISD::CVT_SU || 25700ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang CvtCode == ISD::CVT_US || CvtCode == ISD::CVT_UU || 25800ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang CvtCode == ISD::CVT_SF || CvtCode == ISD::CVT_UF) && 25900ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang "can only promote integers"); 26023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT OutVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 261c460ae90019ddb19d4c07b2cd2fbaecfa7adf67dDale Johannesen return DAG.getConvertRndSat(OutVT, N->getDebugLoc(), N->getOperand(0), 26200ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang N->getOperand(1), N->getOperand(2), 26300ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang N->getOperand(3), N->getOperand(4), CvtCode); 26400ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang} 26500ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang 266475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTLZ(SDNode *N) { 267c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands // Zero extend to the promoted type and do the count there. 268c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = ZExtPromotedInteger(N->getOperand(0)); 269b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen DebugLoc dl = N->getDebugLoc(); 270e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getValueType(0); 271e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Op.getValueType(); 272b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Op = DAG.getNode(ISD::CTLZ, dl, NVT, Op); 27369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Subtract off the extra leading bits in the bigger type. 274b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen return DAG.getNode(ISD::SUB, dl, NVT, Op, 27569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(NVT.getSizeInBits() - 27669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands OVT.getSizeInBits(), NVT)); 27769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 27869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 279475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTPOP(SDNode *N) { 28069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Zero extend to the promoted type and do the count there. 281c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = ZExtPromotedInteger(N->getOperand(0)); 282786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::CTPOP, N->getDebugLoc(), Op.getValueType(), Op); 28369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 28469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 285475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTTZ(SDNode *N) { 286475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 287e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getValueType(0); 288e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Op.getValueType(); 289786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 29069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The count is the same in the promoted type except if the original 29169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // value was zero. This can be handled by setting the bit just off 29269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the top of the original type. 29303dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands APInt TopBit(NVT.getSizeInBits(), 0); 29403dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands TopBit.set(OVT.getSizeInBits()); 295786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op = DAG.getNode(ISD::OR, dl, NVT, Op, DAG.getConstant(TopBit, NVT)); 296786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::CTTZ, dl, NVT, Op); 29769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 29869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 299475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N) { 300786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 30123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 302c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NVT, N->getOperand(0), 303c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman N->getOperand(1)); 30469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 30569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 306475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_FP_TO_XINT(SDNode *N) { 30723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 308a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands unsigned NewOpc = N->getOpcode(); 309786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 310d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 3114c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen // If we're promoting a UINT to a larger size and the larger FP_TO_UINT is 3124c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen // not Legal, check to see if we can use FP_TO_SINT instead. (If both UINT 3134c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen // and SINT conversions are Custom, there is no way to tell which is preferable. 3148c899ee031481dbece5f111379a274c848cb5902Duncan Sands // We choose SINT because that's the right thing on PPC.) 315a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands if (N->getOpcode() == ISD::FP_TO_UINT && 3164c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen !TLI.isOperationLegal(ISD::FP_TO_UINT, NVT) && 317f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NVT)) 318a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands NewOpc = ISD::FP_TO_SINT; 319a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands 320786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(NewOpc, dl, NVT, N->getOperand(0)); 321a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands 322a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands // Assert that the converted value fits in the original type. If it doesn't 323a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands // (eg: because the value being converted is too big), then the result of the 324a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands // original operation was undefined anyway, so the assert is still correct. 325a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands return DAG.getNode(N->getOpcode() == ISD::FP_TO_UINT ? 326786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen ISD::AssertZext : ISD::AssertSext, dl, 327a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands NVT, Res, DAG.getValueType(N->getValueType(0))); 328d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands} 329d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 330927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton KorobeynikovSDValue DAGTypeLegalizer::PromoteIntRes_FP32_TO_FP16(SDNode *N) { 331927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 332927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov DebugLoc dl = N->getDebugLoc(); 333927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov 334927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov SDValue Res = DAG.getNode(N->getOpcode(), dl, NVT, N->getOperand(0)); 335927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov 336927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov return DAG.getNode(ISD::AssertZext, dl, 337927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov NVT, Res, DAG.getValueType(N->getValueType(0))); 338927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov} 339927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov 340475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_INT_EXTEND(SDNode *N) { 34123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 342786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 343be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 344bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (getTypeAction(N->getOperand(0).getValueType()) == PromoteInteger) { 345475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 3466959b2bb6521baca57e5507ca039e51002d4a971Duncan Sands assert(Res.getValueType().bitsLE(NVT) && "Extension doesn't make sense!"); 347126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 348bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result and operand types are the same after promotion, simplify 349bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // to an in-register extension. 350bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (NVT == Res.getValueType()) { 351bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The high bits are not guaranteed to be anything. Insert an extend. 352bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::SIGN_EXTEND) 353786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, NVT, Res, 354bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(N->getOperand(0).getValueType())); 355bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::ZERO_EXTEND) 3564be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen return DAG.getZeroExtendInReg(Res, dl, N->getOperand(0).getValueType()); 357bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(N->getOpcode() == ISD::ANY_EXTEND && "Unknown integer extension!"); 358bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 359126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands } 36069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 36169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 362bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Otherwise, just extend the original operand all the way to the larger type. 363786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), dl, NVT, N->getOperand(0)); 364bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 36569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 366475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_LOAD(LoadSDNode *N) { 367bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 36823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 369bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::LoadExtType ExtType = 370bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::isNON_EXTLoad(N) ? ISD::EXTLOAD : N->getExtensionType(); 371786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 372786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getExtLoad(ExtType, dl, NVT, N->getChain(), N->getBasePtr(), 37347d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands N->getSrcValue(), N->getSrcValueOffset(), 37447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands N->getMemoryVT(), N->isVolatile(), 3751e559443a17d1b335f697551c6263ba60d5dd827David Greene N->isNonTemporal(), N->getAlignment()); 37669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 377bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 378bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 379475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 380bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 38169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 38269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 383874ae251c317788391f9c3f113957802d390a063Dale Johannesen/// Promote the overflow flag of an overflowing arithmetic node. 384ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Overflow(SDNode *N) { 385ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Simply change the return type of the boolean result. 38623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(1)); 387e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ValueVTs[] = { N->getValueType(0), NVT }; 388ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue Ops[] = { N->getOperand(0), N->getOperand(1) }; 389786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(N->getOpcode(), N->getDebugLoc(), 390786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getVTList(ValueVTs, 2), Ops, 2); 391ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 392ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Modified the sum result - switch anything that used the old sum to use 393ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // the new one. 394ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands ReplaceValueWith(SDValue(N, 0), Res); 395ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 396ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return SDValue(Res.getNode(), 1); 397ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 398ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 399ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo) { 400ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands if (ResNo == 1) 401ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return PromoteIntRes_Overflow(N); 402ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 403ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // The operation overflowed iff the result in the larger type is not the 404ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // sign extension of its truncation to the original type. 405ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue LHS = SExtPromotedInteger(N->getOperand(0)); 406ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue RHS = SExtPromotedInteger(N->getOperand(1)); 407e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getOperand(0).getValueType(); 408e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = LHS.getValueType(); 409786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 410ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 411ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Do the arithmetic in the larger type. 412ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands unsigned Opcode = N->getOpcode() == ISD::SADDO ? ISD::ADD : ISD::SUB; 413786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(Opcode, dl, NVT, LHS, RHS); 414ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 415ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Calculate the overflow flag: sign extend the arithmetic result from 416ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // the original type. 417786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Ofl = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, NVT, Res, 418ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands DAG.getValueType(OVT)); 419ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Overflowed if and only if this is not equal to Res. 420786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ofl = DAG.getSetCC(dl, N->getValueType(1), Ofl, Res, ISD::SETNE); 421ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 422ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Use the calculated overflow everywhere. 423ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands ReplaceValueWith(SDValue(N, 1), Ofl); 424ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 425ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return Res; 426ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 427ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 428475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SDIV(SDNode *N) { 429bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Sign extend the input. 430c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue LHS = SExtPromotedInteger(N->getOperand(0)); 431c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue RHS = SExtPromotedInteger(N->getOperand(1)); 432786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), N->getDebugLoc(), 433786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), LHS, RHS); 43469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 43569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 436475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT(SDNode *N) { 437475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(1)); 438475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(2)); 439786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SELECT, N->getDebugLoc(), 440786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), N->getOperand(0),LHS,RHS); 44169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 44269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 443475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT_CC(SDNode *N) { 444475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(2)); 445475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(3)); 446786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SELECT_CC, N->getDebugLoc(), 447786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), N->getOperand(0), 448bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 44969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 45069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 451475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SETCC(SDNode *N) { 452e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = TLI.getSetCCResultType(N->getOperand(0).getValueType()); 4537e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(isTypeLegal(SVT) && "Illegal SetCC type!"); 454786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 4557e4982287591945c4e42ba8470a978e629789c76Duncan Sands 4567e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Get the SETCC result using the canonical SETCC type. 457786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue SetCC = DAG.getNode(ISD::SETCC, dl, SVT, N->getOperand(0), 4587e4982287591945c4e42ba8470a978e629789c76Duncan Sands N->getOperand(1), N->getOperand(2)); 4597e4982287591945c4e42ba8470a978e629789c76Duncan Sands 4607e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Convert to the expected type. 46123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 4626959b2bb6521baca57e5507ca039e51002d4a971Duncan Sands assert(NVT.bitsLE(SVT) && "Integer type overpromoted?"); 463786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, NVT, SetCC); 46469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 46569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 466475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SHL(SDNode *N) { 467786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SHL, N->getDebugLoc(), 468182465c589f95ff165331d06035ec53ff05bf1f5Evan Cheng TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)), 469bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands GetPromotedInteger(N->getOperand(0)), N->getOperand(1)); 47069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 47169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 472475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N) { 473475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 474786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SIGN_EXTEND_INREG, N->getDebugLoc(), 475786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op.getValueType(), Op, N->getOperand(1)); 4768d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands} 4778d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands 478475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SimpleIntBinOp(SDNode *N) { 479bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input may have strange things in the top bits of the registers, but 480bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // these operations don't care. They may have weird bits going out, but 481bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that too is okay if they are integer operations. 482475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 483475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 484786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), N->getDebugLoc(), 485786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), LHS, RHS); 48669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 48769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 488475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRA(SDNode *N) { 489bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly sign extended. 490c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Res = SExtPromotedInteger(N->getOperand(0)); 491786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SRA, N->getDebugLoc(), 492786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Res.getValueType(), Res, N->getOperand(1)); 493bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 49469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 495475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRL(SDNode *N) { 496bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly zero extended. 497e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 49823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 499475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = ZExtPromotedInteger(N->getOperand(0)); 500786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SRL, N->getDebugLoc(), NVT, Res, N->getOperand(1)); 50169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 50269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 503475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_TRUNCATE(SDNode *N) { 50423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 505475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res; 50669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 507bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (getTypeAction(N->getOperand(0).getValueType())) { 508c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown type action!"); 509bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case Legal: 510bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ExpandInteger: 511bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = N->getOperand(0); 512bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 513bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case PromoteInteger: 514bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = GetPromotedInteger(N->getOperand(0)); 515bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 516bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 517bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 518bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate to NVT instead of VT 519786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), NVT, Res); 52069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 52169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 522ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo) { 523ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands if (ResNo == 1) 524ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return PromoteIntRes_Overflow(N); 525ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 526ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // The operation overflowed iff the result in the larger type is not the 527ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // zero extension of its truncation to the original type. 528c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue LHS = ZExtPromotedInteger(N->getOperand(0)); 529c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue RHS = ZExtPromotedInteger(N->getOperand(1)); 530e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getOperand(0).getValueType(); 531e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = LHS.getValueType(); 532786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 53369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 534ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Do the arithmetic in the larger type. 535ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands unsigned Opcode = N->getOpcode() == ISD::UADDO ? ISD::ADD : ISD::SUB; 536786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(Opcode, dl, NVT, LHS, RHS); 5378ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 538ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Calculate the overflow flag: zero extend the arithmetic result from 539ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // the original type. 5404be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen SDValue Ofl = DAG.getZeroExtendInReg(Res, dl, OVT); 541ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Overflowed if and only if this is not equal to Res. 542786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ofl = DAG.getSetCC(dl, N->getValueType(1), Ofl, Res, ISD::SETNE); 5438ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 544ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Use the calculated overflow everywhere. 545ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands ReplaceValueWith(SDValue(N, 1), Ofl); 5468ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 547ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return Res; 548ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 549ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 550ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_UDIV(SDNode *N) { 551ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Zero extend the input. 552ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue LHS = ZExtPromotedInteger(N->getOperand(0)); 553ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue RHS = ZExtPromotedInteger(N->getOperand(1)); 554786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), N->getDebugLoc(), 555786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), LHS, RHS); 5568ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling} 5578ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 558475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UNDEF(SDNode *N) { 55953f6ed9560aa4586ba217fbf94acbfada52f561fEvan Cheng return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(), 56053f6ed9560aa4586ba217fbf94acbfada52f561fEvan Cheng N->getValueType(0))); 56169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 56269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 563475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_VAARG(SDNode *N) { 564475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = N->getOperand(0); // Get the chain. 565475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getOperand(1); // Get the pointer. 566e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 567786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 56869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 56923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RegVT = TLI.getRegisterType(*DAG.getContext(), VT); 57023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson unsigned NumRegs = TLI.getNumRegisters(*DAG.getContext(), VT); 571d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // The argument is passed as NumRegs registers of type RegVT. 572d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands 573d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands SmallVector<SDValue, 8> Parts(NumRegs); 574d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands for (unsigned i = 0; i < NumRegs; ++i) { 575c460ae90019ddb19d4c07b2cd2fbaecfa7adf67dDale Johannesen Parts[i] = DAG.getVAArg(RegVT, dl, Chain, Ptr, N->getOperand(2)); 576d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands Chain = Parts[i].getValue(1); 577d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands } 57869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 579d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Handle endianness of the load. 580d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands if (TLI.isBigEndian()) 581d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands std::reverse(Parts.begin(), Parts.end()); 58269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 583d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Assemble the parts in the promoted type. 58423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 585786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Parts[0]); 586d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands for (unsigned i = 1; i < NumRegs; ++i) { 587786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Part = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Parts[i]); 588d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Shift it to the right position and "or" it in. 589786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Part = DAG.getNode(ISD::SHL, dl, NVT, Part, 590d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands DAG.getConstant(i * RegVT.getSizeInBits(), 59192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 592786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Res = DAG.getNode(ISD::OR, dl, NVT, Res, Part); 593d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands } 59469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 595d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Modified the chain result - switch anything that used the old chain to 596bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 597d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands ReplaceValueWith(SDValue(N, 1), Chain); 598d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands 599d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands return Res; 60069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 60169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 602ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_XMULO(SDNode *N, unsigned ResNo) { 603ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands assert(ResNo == 1 && "Only boolean result promotion currently supported!"); 604ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return PromoteIntRes_Overflow(N); 605ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 6067fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 607bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 608bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands// Integer Operand Promotion 609bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 6107fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 611bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// PromoteIntegerOperand - This method is called when the specified operand of 612bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// the specified node is found to need promotion. At this point, all of the 613bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// result types of the node are known to be legal, but other operands of the 614bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// node may need promotion or expansion as well as the specified one. 615bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sandsbool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) { 616d765353da89988e949fd4c021d8860f36ab7c392David Greene DEBUG(dbgs() << "Promote integer operand: "; N->dump(&DAG); dbgs() << "\n"); 617475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 6187fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 619f43071beddb7ed5b2fd7d2f06c4130460616a13dDuncan Sands if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) 620bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta return false; 62169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 622bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta switch (N->getOpcode()) { 623bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta default: 624bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #ifndef NDEBUG 625d765353da89988e949fd4c021d8860f36ab7c392David Greene dbgs() << "PromoteIntegerOperand Op #" << OpNo << ": "; 626d765353da89988e949fd4c021d8860f36ab7c392David Greene N->dump(&DAG); dbgs() << "\n"; 627bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #endif 628c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to promote this operator's operand!"); 629bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 630bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::ANY_EXTEND: Res = PromoteIntOp_ANY_EXTEND(N); break; 63127759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman case ISD::BIT_CONVERT: Res = PromoteIntOp_BIT_CONVERT(N); break; 632bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BR_CC: Res = PromoteIntOp_BR_CC(N, OpNo); break; 633bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BRCOND: Res = PromoteIntOp_BRCOND(N, OpNo); break; 634bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BUILD_PAIR: Res = PromoteIntOp_BUILD_PAIR(N); break; 635bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BUILD_VECTOR: Res = PromoteIntOp_BUILD_VECTOR(N); break; 636bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::CONVERT_RNDSAT: 637bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta Res = PromoteIntOp_CONVERT_RNDSAT(N); break; 638bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::INSERT_VECTOR_ELT: 639bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta Res = PromoteIntOp_INSERT_VECTOR_ELT(N, OpNo);break; 640bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::MEMBARRIER: Res = PromoteIntOp_MEMBARRIER(N); break; 641aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang case ISD::SCALAR_TO_VECTOR: 642aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang Res = PromoteIntOp_SCALAR_TO_VECTOR(N); break; 643bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SELECT: Res = PromoteIntOp_SELECT(N, OpNo); break; 644bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SELECT_CC: Res = PromoteIntOp_SELECT_CC(N, OpNo); break; 645bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SETCC: Res = PromoteIntOp_SETCC(N, OpNo); break; 646bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SIGN_EXTEND: Res = PromoteIntOp_SIGN_EXTEND(N); break; 647bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SINT_TO_FP: Res = PromoteIntOp_SINT_TO_FP(N); break; 648bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::STORE: Res = PromoteIntOp_STORE(cast<StoreSDNode>(N), 649bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta OpNo); break; 650bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::TRUNCATE: Res = PromoteIntOp_TRUNCATE(N); break; 651927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP16_TO_FP32: 652bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::UINT_TO_FP: Res = PromoteIntOp_UINT_TO_FP(N); break; 653bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::ZERO_EXTEND: Res = PromoteIntOp_ZERO_EXTEND(N); break; 65455467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 65555467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SHL: 65655467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRA: 65755467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRL: 65855467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::ROTL: 65955467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::ROTR: Res = PromoteIntOp_Shift(N); break; 660bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta } 6619fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands 662bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is null, the sub-method took care of registering results etc. 6639fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands if (!Res.getNode()) return false; 66447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 66547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // If the result is N, the sub-method updated N in place. Tell the legalizer 66647d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // core about this. 66747d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands if (Res.getNode() == N) 668bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return true; 669bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 670bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 671bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Invalid operand expansion"); 672bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 673475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 674bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return false; 67569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 67669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 67769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// PromoteSetCCOperands - Promote the operands of a comparison. This code is 67869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// shared among BR_CC, SELECT_CC, and SETCC handlers. 679475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::PromoteSetCCOperands(SDValue &NewLHS,SDValue &NewRHS, 68069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands ISD::CondCode CCCode) { 681cff50d9e20d7bbc3acf4845fe826bfb3095126c4Duncan Sands // We have to insert explicit sign or zero extends. Note that we could 682cff50d9e20d7bbc3acf4845fe826bfb3095126c4Duncan Sands // insert sign extends for ALL conditions, but zero extend is cheaper on 683cff50d9e20d7bbc3acf4845fe826bfb3095126c4Duncan Sands // many machines (an AND instead of two shifts), so prefer it. 68469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (CCCode) { 685c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown integer comparison!"); 68669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETEQ: 68769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETNE: 68869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGE: 68969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGT: 69069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULE: 69169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULT: 69269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // ALL of these operations will work if we either sign or zero extend 69369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the operands (including the unsigned comparisons!). Zero extend is 69469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // usually a simpler/cheaper operation, so prefer it. 695c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewLHS = ZExtPromotedInteger(NewLHS); 696c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewRHS = ZExtPromotedInteger(NewRHS); 69711ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 69869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGE: 69969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGT: 70069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLT: 70169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLE: 702c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewLHS = SExtPromotedInteger(NewLHS); 703c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewRHS = SExtPromotedInteger(NewRHS); 70411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 70569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 70669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 70769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 708475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ANY_EXTEND(SDNode *N) { 709475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 710786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), N->getValueType(0), Op); 711bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 71269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 71327759f41ca1c930e2860275c9ba2567a5890d7d2Eli FriedmanSDValue DAGTypeLegalizer::PromoteIntOp_BIT_CONVERT(SDNode *N) { 71427759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman // This should only occur in unusual situations like bitcasting to an 71527759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman // x86_fp80, so just turn it into a store+load 71627759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman return CreateStackStoreLoad(N->getOperand(0), N->getValueType(0)); 71727759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman} 71827759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman 719475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo) { 720bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 2 && "Don't know how to promote this operand!"); 72169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 722475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(2); 723475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(3); 724bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(1))->get()); 72569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 726bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0), CC (#1) and basic block destination (Op#4) are always 727bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal types. 728475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 729bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 730bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 731bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 732475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo) { 733bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 1 && "only know how to promote condition"); 734bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 735b6e223a9e806921183da972253c49082a2e07944Duncan Sands // Promote all the way up to the canonical SetCC type. 736825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson EVT SVT = TLI.getSetCCResultType(MVT::Other); 737b6e223a9e806921183da972253c49082a2e07944Duncan Sands SDValue Cond = PromoteTargetBoolean(N->getOperand(1), SVT); 738bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 739bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0) and basic block destination (Op#2) are always legal types. 740475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Cond, 741bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(2)); 742bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 743bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 744475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_PAIR(SDNode *N) { 745bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Since the result type is legal, the operands must promote to it. 746e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = N->getOperand(0).getValueType(); 747c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Lo = ZExtPromotedInteger(N->getOperand(0)); 748475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = GetPromotedInteger(N->getOperand(1)); 749bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Lo.getValueType() == N->getValueType(0) && "Operand over promoted?"); 750786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 751bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 752786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SHL, dl, N->getValueType(0), Hi, 75392abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(OVT.getSizeInBits(), TLI.getPointerTy())); 754786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::OR, dl, N->getValueType(0), Lo, Hi); 75569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 75669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 757475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_VECTOR(SDNode *N) { 75869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The vector type is legal but the element type is not. This implies 75969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that the vector is a power-of-two in length and that the element 76069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // type does not have a strange size (eg: it is not i1). 761e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VecVT = N->getValueType(0); 76269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands unsigned NumElts = VecVT.getVectorNumElements(); 76369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!(NumElts & 1) && "Legal vector of one illegal element?"); 76469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 765b1303d05a89972195de023fda432cc621375a27cBob Wilson // Promote the inserted value. The type does not need to match the 766b1303d05a89972195de023fda432cc621375a27cBob Wilson // vector element type. Check that any extra bits introduced will be 767b1303d05a89972195de023fda432cc621375a27cBob Wilson // truncated away. 768b1303d05a89972195de023fda432cc621375a27cBob Wilson assert(N->getOperand(0).getValueType().getSizeInBits() >= 769b1303d05a89972195de023fda432cc621375a27cBob Wilson N->getValueType(0).getVectorElementType().getSizeInBits() && 770b1303d05a89972195de023fda432cc621375a27cBob Wilson "Type of inserted value narrower than vector element type!"); 77169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 772b1303d05a89972195de023fda432cc621375a27cBob Wilson SmallVector<SDValue, 16> NewOps; 773c885165e664f3b465403e1b6ce57ba63f57c5f0cBob Wilson for (unsigned i = 0; i < NumElts; ++i) 774b1303d05a89972195de023fda432cc621375a27cBob Wilson NewOps.push_back(GetPromotedInteger(N->getOperand(i))); 77569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 776b1303d05a89972195de023fda432cc621375a27cBob Wilson return DAG.UpdateNodeOperands(SDValue(N, 0), &NewOps[0], NumElts); 77769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 77869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 77928088d3c049017a131aa7b07201c6e19c0227cefMon P WangSDValue DAGTypeLegalizer::PromoteIntOp_CONVERT_RNDSAT(SDNode *N) { 78028088d3c049017a131aa7b07201c6e19c0227cefMon P Wang ISD::CvtCode CvtCode = cast<CvtRndSatSDNode>(N)->getCvtCode(); 78128088d3c049017a131aa7b07201c6e19c0227cefMon P Wang assert ((CvtCode == ISD::CVT_SS || CvtCode == ISD::CVT_SU || 78228088d3c049017a131aa7b07201c6e19c0227cefMon P Wang CvtCode == ISD::CVT_US || CvtCode == ISD::CVT_UU || 78328088d3c049017a131aa7b07201c6e19c0227cefMon P Wang CvtCode == ISD::CVT_FS || CvtCode == ISD::CVT_FU) && 78428088d3c049017a131aa7b07201c6e19c0227cefMon P Wang "can only promote integer arguments"); 78528088d3c049017a131aa7b07201c6e19c0227cefMon P Wang SDValue InOp = GetPromotedInteger(N->getOperand(0)); 786c460ae90019ddb19d4c07b2cd2fbaecfa7adf67dDale Johannesen return DAG.getConvertRndSat(N->getValueType(0), N->getDebugLoc(), InOp, 78728088d3c049017a131aa7b07201c6e19c0227cefMon P Wang N->getOperand(1), N->getOperand(2), 78828088d3c049017a131aa7b07201c6e19c0227cefMon P Wang N->getOperand(3), N->getOperand(4), CvtCode); 78928088d3c049017a131aa7b07201c6e19c0227cefMon P Wang} 79028088d3c049017a131aa7b07201c6e19c0227cefMon P Wang 791475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, 792475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned OpNo) { 79369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OpNo == 1) { 79469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the inserted value. This is valid because the type does not 79569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // have to match the vector element type. 79669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 79769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Check that any extra bits introduced will be truncated away. 79869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(N->getOperand(1).getValueType().getSizeInBits() >= 79969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getValueType(0).getVectorElementType().getSizeInBits() && 80069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands "Type of inserted value narrower than vector element type!"); 801475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 80269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetPromotedInteger(N->getOperand(1)), 80369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(2)); 80469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 80569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 80669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OpNo == 2 && "Different operand and result vector types?"); 80769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 80869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the index. 809c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Idx = ZExtPromotedInteger(N->getOperand(2)); 810475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 81169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(1), Idx); 81269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 81369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 814475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_MEMBARRIER(SDNode *N) { 815475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewOps[6]; 8164be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen DebugLoc dl = N->getDebugLoc(); 81769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[0] = N->getOperand(0); 81869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 1; i < array_lengthof(NewOps); ++i) { 819475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag = GetPromotedInteger(N->getOperand(i)); 820825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOps[i] = DAG.getZeroExtendInReg(Flag, dl, MVT::i1); 82169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 822475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue (N, 0), NewOps, 82369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands array_lengthof(NewOps)); 82469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 82569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 826aa9df0b0c3cef33514095bde2eedead986677955Mon P WangSDValue DAGTypeLegalizer::PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N) { 827b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands // Integer SCALAR_TO_VECTOR operands are implicitly truncated, so just promote 828b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands // the operand in place. 829b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), 830b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands GetPromotedInteger(N->getOperand(0))); 831aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang} 832aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang 833475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT(SDNode *N, unsigned OpNo) { 834bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Only know how to promote condition"); 8357e4982287591945c4e42ba8470a978e629789c76Duncan Sands 836b6e223a9e806921183da972253c49082a2e07944Duncan Sands // Promote all the way up to the canonical SetCC type. 837e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = TLI.getSetCCResultType(N->getOperand(1).getValueType()); 838b6e223a9e806921183da972253c49082a2e07944Duncan Sands SDValue Cond = PromoteTargetBoolean(N->getOperand(0), SVT); 839bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 8407e4982287591945c4e42ba8470a978e629789c76Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), Cond, 8417e4982287591945c4e42ba8470a978e629789c76Duncan Sands N->getOperand(1), N->getOperand(2)); 842bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 843bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 844475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo) { 845bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 846bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 847475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 848475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 849bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(4))->get()); 850bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 851bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#4) and the possible return values (#2 and #3) have legal types. 852475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2), 853bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(3), N->getOperand(4)); 854bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 855bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 856475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SETCC(SDNode *N, unsigned OpNo) { 857bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 858bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 859475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 860475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 861bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(2))->get()); 862bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 863bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#2) is always legal. 864475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2)); 865bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 866bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 86755467af31620c9d027e071ebcd9746b7593cff17Sanjiv GuptaSDValue DAGTypeLegalizer::PromoteIntOp_Shift(SDNode *N) { 86855467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 86955467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta ZExtPromotedInteger(N->getOperand(1))); 87055467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta} 87155467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 872475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SIGN_EXTEND(SDNode *N) { 873475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 874786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 875786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op = DAG.getNode(ISD::ANY_EXTEND, dl, N->getValueType(0), Op); 876786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), 877bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op, DAG.getValueType(N->getOperand(0).getValueType())); 878bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 879bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 880c08468774b65dc288c44076d428f4beddabe58e2Duncan SandsSDValue DAGTypeLegalizer::PromoteIntOp_SINT_TO_FP(SDNode *N) { 881c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), 882c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SExtPromotedInteger(N->getOperand(0))); 883c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands} 884c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands 885475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo){ 886bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 887475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(), Ptr = N->getBasePtr(); 888bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands int SVOffset = N->getSrcValueOffset(); 889bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Alignment = N->getAlignment(); 890bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands bool isVolatile = N->isVolatile(); 8911e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = N->isNonTemporal(); 892786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 893bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 894475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = GetPromotedInteger(N->getValue()); // Get promoted value. 895bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 896bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate the value and store the result. 897786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getTruncStore(Ch, dl, Val, Ptr, N->getSrcValue(), 898bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands SVOffset, N->getMemoryVT(), 8991e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 900bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 901bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 902475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_TRUNCATE(SDNode *N) { 903475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 904786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), N->getValueType(0), Op); 905bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 906bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 907c08468774b65dc288c44076d428f4beddabe58e2Duncan SandsSDValue DAGTypeLegalizer::PromoteIntOp_UINT_TO_FP(SDNode *N) { 908c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), 909c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands ZExtPromotedInteger(N->getOperand(0))); 910c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands} 911c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands 912475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ZERO_EXTEND(SDNode *N) { 9134be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen DebugLoc dl = N->getDebugLoc(); 914475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 9154be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen Op = DAG.getNode(ISD::ANY_EXTEND, dl, N->getValueType(0), Op); 9164be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen return DAG.getZeroExtendInReg(Op, dl, N->getOperand(0).getValueType()); 917bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 918bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 91969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 92069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 92169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Result Expansion 92269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 92369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 92469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// ExpandIntegerResult - This method is called when the specified result of the 925cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// specified node is found to need expansion. At this point, the node may also 926cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// have invalid operands or may have other results that need promotion, we just 927cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// know that (at least) one result needs expansion. 92869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) { 929d765353da89988e949fd4c021d8860f36ab7c392David Greene DEBUG(dbgs() << "Expand integer result: "; N->dump(&DAG); dbgs() << "\n"); 930475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 931475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Lo = Hi = SDValue(); 932cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 933cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // See if the target wants to custom expand this node. 934f43071beddb7ed5b2fd7d2f06c4130460616a13dDuncan Sands if (CustomLowerNode(N, N->getValueType(ResNo), true)) 9351607f05cb7d77d01ce521a30232faa389dbed4e2Duncan Sands return; 936cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 937cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (N->getOpcode()) { 938cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: 939cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#ifndef NDEBUG 940d765353da89988e949fd4c021d8860f36ab7c392David Greene dbgs() << "ExpandIntegerResult #" << ResNo << ": "; 941d765353da89988e949fd4c021d8860f36ab7c392David Greene N->dump(&DAG); dbgs() << "\n"; 942cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#endif 943c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to expand the result of this operator!"); 94469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 94578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break; 94678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 94778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 94878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 94978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 95078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break; 95178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 9524a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 95378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 95421c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break; 95578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 95669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ANY_EXTEND: ExpandIntRes_ANY_EXTEND(N, Lo, Hi); break; 95795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands case ISD::AssertSext: ExpandIntRes_AssertSext(N, Lo, Hi); break; 95869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AssertZext: ExpandIntRes_AssertZext(N, Lo, Hi); break; 95905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BSWAP: ExpandIntRes_BSWAP(N, Lo, Hi); break; 96005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::Constant: ExpandIntRes_Constant(N, Lo, Hi); break; 96105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTLZ: ExpandIntRes_CTLZ(N, Lo, Hi); break; 96205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTPOP: ExpandIntRes_CTPOP(N, Lo, Hi); break; 96305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTTZ: ExpandIntRes_CTTZ(N, Lo, Hi); break; 96469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_SINT: ExpandIntRes_FP_TO_SINT(N, Lo, Hi); break; 96569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_UINT: ExpandIntRes_FP_TO_UINT(N, Lo, Hi); break; 96669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::LOAD: ExpandIntRes_LOAD(cast<LoadSDNode>(N), Lo, Hi); break; 96705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::MUL: ExpandIntRes_MUL(N, Lo, Hi); break; 96805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SDIV: ExpandIntRes_SDIV(N, Lo, Hi); break; 96905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND: ExpandIntRes_SIGN_EXTEND(N, Lo, Hi); break; 97005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND_INREG: ExpandIntRes_SIGN_EXTEND_INREG(N, Lo, Hi); break; 97105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SREM: ExpandIntRes_SREM(N, Lo, Hi); break; 97205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: ExpandIntRes_TRUNCATE(N, Lo, Hi); break; 97305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UDIV: ExpandIntRes_UDIV(N, Lo, Hi); break; 97405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UREM: ExpandIntRes_UREM(N, Lo, Hi); break; 97505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::ZERO_EXTEND: ExpandIntRes_ZERO_EXTEND(N, Lo, Hi); break; 97669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 977cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::AND: 978cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::OR: 97905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::XOR: ExpandIntRes_Logical(N, Lo, Hi); break; 98005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 981cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADD: 98205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUB: ExpandIntRes_ADDSUB(N, Lo, Hi); break; 98305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 984cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDC: 98505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBC: ExpandIntRes_ADDSUBC(N, Lo, Hi); break; 98605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 987cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDE: 98805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBE: ExpandIntRes_ADDSUBE(N, Lo, Hi); break; 98905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 990cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SHL: 991cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SRA: 99205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: ExpandIntRes_Shift(N, Lo, Hi); break; 993268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 994268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman case ISD::SADDO: 995268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman case ISD::SSUBO: ExpandIntRes_SADDSUBO(N, Lo, Hi); break; 996268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman case ISD::UADDO: 997268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman case ISD::USUBO: ExpandIntRes_UADDSUBO(N, Lo, Hi); break; 998cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 999d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 1000cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If Lo/Hi is null, the sub-method took care of registering results etc. 1001ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Lo.getNode()) 1002475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SetExpandedInteger(SDValue(N, ResNo), Lo, Hi); 1003cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1004cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 100505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftByConstant - N is a shift by a value that needs to be expanded, 100605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// and the shift amount is a constant 'Amt'. Expand the operation. 100705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandShiftByConstant(SDNode *N, unsigned Amt, 1008475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1009786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 101005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the incoming operand to be shifted, so that we have its parts 1011475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 101205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 1013cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1014e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = InL.getValueType(); 101505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned VTBits = N->getValueType(0).getSizeInBits(); 101605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 1017e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShTy = N->getOperand(1).getValueType(); 1018cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 101905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SHL) { 102005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 102105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = Hi = DAG.getConstant(0, NVT); 102205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 102305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 10247fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands Hi = DAG.getNode(ISD::SHL, dl, 1025786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NVT, InL, DAG.getConstant(Amt-NVTBits,ShTy)); 102605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 102705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 102805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = InL; 1029104de6cf7b80ec5e9beb502a069f376810a0a1e3Richard Osborne } else if (Amt == 1 && 1030f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::ADDC, 1031bc7a902713c4e3f13a93c383e647d2a18712f447Dan Gohman TLI.getTypeToExpandTo(*DAG.getContext(), NVT))) { 103205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Emit this X << 1 as X+X. 1033825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 1034475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { InL, InL }; 1035786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADDC, dl, VTList, LoOps, 2); 1036475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { InH, InH, Lo.getValue(1) }; 1037786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADDE, dl, VTList, HiOps, 3); 103805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1039786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SHL, dl, NVT, InL, DAG.getConstant(Amt, ShTy)); 1040786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::OR, dl, NVT, 1041786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, InH, 104205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 1043786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, InL, 104405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 104505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 104605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 1047cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1048cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 104905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SRL) { 105005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 105105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 105205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 105305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 10547fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands Lo = DAG.getNode(ISD::SRL, dl, 1055786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NVT, InH, DAG.getConstant(Amt-NVTBits,ShTy)); 105605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 105705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 105805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 105905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 106005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1061786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::OR, dl, NVT, 1062786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, InL, 106305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 1064786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, InH, 106505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 1066786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRL, dl, NVT, InH, DAG.getConstant(Amt, ShTy)); 106705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 106805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 1069cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1070d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 107105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 107205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 1073786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = Lo = DAG.getNode(ISD::SRA, dl, NVT, InH, 107405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 107505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 1076786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SRA, dl, NVT, InH, 107705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt-NVTBits, ShTy)); 1078786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, 107905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 108005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 108105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 1082786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, 108305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 1084d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } else { 1085de06470330260f5937e7ca558f5f5b3e171f2ee5Dale Johannesen Lo = DAG.getNode(ISD::OR, dl, NVT, 1086786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, InL, 108705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 1088786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, InH, 108905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 1090786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, DAG.getConstant(Amt, ShTy)); 1091d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } 1092d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands} 1093d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 109405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftWithKnownAmountBit - Try to determine whether we can simplify 109505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// this shift based on knowledge of the high bit of the shift amount. If we 109605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// can tell this, we know that it is >= 32 or < 32, without knowing the actual 109705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// shift amount. 109805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer:: 1099475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi) { 1100475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt = N->getOperand(1); 110123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1102e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShTy = Amt.getValueType(); 11035b870aff81da0c07413f0241087bb3722954b83dDan Gohman unsigned ShBits = ShTy.getScalarType().getSizeInBits(); 11045b870aff81da0c07413f0241087bb3722954b83dDan Gohman unsigned NVTBits = NVT.getScalarType().getSizeInBits(); 110505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(isPowerOf2_32(NVTBits) && 110605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Expanded integer type size not a power of two!"); 1107786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1108cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 110905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt HighBitMask = APInt::getHighBitsSet(ShBits, ShBits - Log2_32(NVTBits)); 111005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt KnownZero, KnownOne; 111105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.ComputeMaskedBits(N->getOperand(1), HighBitMask, KnownZero, KnownOne); 1112cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 111305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we don't know anything about the high bits, exit. 111405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (((KnownZero|KnownOne) & HighBitMask) == 0) 111505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 1116cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 111705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get the incoming operand to be shifted. 1118475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 111905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 1120be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 112105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that any of the high bits of the shift amount are one, then we 112205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 112305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (KnownOne.intersects(HighBitMask)) { 112405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mask out the high bit, which we know is set. 1125786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Amt = DAG.getNode(ISD::AND, dl, ShTy, Amt, 112605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(~HighBitMask, ShTy)); 112705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 112805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 1129c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown shift"); 113005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: 113105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); // Low part is zero. 1132786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SHL, dl, NVT, InL, Amt); // High part from Lo part. 113305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 113405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 113505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // Hi part is zero. 1136786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SRL, dl, NVT, InH, Amt); // Lo part from Hi part. 113705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 113805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: 1139786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, // Sign extend high part. 114005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 1141786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SRA, dl, NVT, InH, Amt); // Lo part from Hi part. 114205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 114305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 114405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 114505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 114628dc98f7521933872b93156e3ebf5c9f8327b2b3Eli Friedman#if 0 114728dc98f7521933872b93156e3ebf5c9f8327b2b3Eli Friedman // FIXME: This code is broken for shifts with a zero amount! 114805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that all of the high bits of the shift amount are zero, then we 114905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 115005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if ((KnownZero & HighBitMask) == HighBitMask) { 115105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Compute 32-amt. 1152475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt2 = DAG.getNode(ISD::SUB, ShTy, 115305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits, ShTy), 115405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt); 115505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned Op1, Op2; 115605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 1157c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown shift"); 115805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: Op1 = ISD::SHL; Op2 = ISD::SRL; break; 115905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 116005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: Op1 = ISD::SRL; Op2 = ISD::SHL; break; 116105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 116205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 116305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), NVT, InL, Amt); 116405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 116505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op1, NVT, InH, Amt), 116605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op2, NVT, InL, Amt2)); 116705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 116805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 116928dc98f7521933872b93156e3ebf5c9f8327b2b3Eli Friedman#endif 117005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 117105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 117205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 117305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 11746fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng/// ExpandShiftWithUnknownAmountBit - Fully general expansion of integer shift 11756fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng/// of any size. 11766fb2168aaed06e4685d064b6f63dc4c668b42728Evan Chengbool DAGTypeLegalizer:: 11776fb2168aaed06e4685d064b6f63dc4c668b42728Evan ChengExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi) { 11786fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue Amt = N->getOperand(1); 117923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1180e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShTy = Amt.getValueType(); 11816fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng unsigned NVTBits = NVT.getSizeInBits(); 11826fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng assert(isPowerOf2_32(NVTBits) && 11836fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng "Expanded integer type size not a power of two!"); 11846fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DebugLoc dl = N->getDebugLoc(); 11856fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11866fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // Get the incoming operand to be shifted. 11876fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue InL, InH; 11886fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng GetExpandedInteger(N->getOperand(0), InL, InH); 11896fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11906fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue NVBitsNode = DAG.getConstant(NVTBits, ShTy); 11919993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands SDValue AmtExcess = DAG.getNode(ISD::SUB, dl, ShTy, Amt, NVBitsNode); 11929993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands SDValue AmtLack = DAG.getNode(ISD::SUB, dl, ShTy, NVBitsNode, Amt); 11939993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands SDValue isShort = DAG.getSetCC(dl, TLI.getSetCCResultType(ShTy), 11949993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands Amt, NVBitsNode, ISD::SETULT); 11956fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11969993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands SDValue LoS, HiS, LoL, HiL; 11976fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng switch (N->getOpcode()) { 1198c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown shift"); 11996fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng case ISD::SHL: 12009993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands // Short: ShAmt < NVTBits 12019993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands LoS = DAG.getNode(ISD::SHL, dl, NVT, InL, Amt); 12029993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands HiS = DAG.getNode(ISD::OR, dl, NVT, 12036fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SHL, dl, NVT, InH, Amt), 120436236b76a45be2a50315d1926c49bd3c63786b49Duncan Sands // FIXME: If Amt is zero, the following shift generates an undefined result 120536236b76a45be2a50315d1926c49bd3c63786b49Duncan Sands // on some architectures. 12069993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands DAG.getNode(ISD::SRL, dl, NVT, InL, AmtLack)); 12079993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands 12089993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands // Long: ShAmt >= NVTBits 12099993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands LoL = DAG.getConstant(0, NVT); // Lo part is zero. 12109993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands HiL = DAG.getNode(ISD::SHL, dl, NVT, InL, AmtExcess); // Hi from Lo part. 12116fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 12129993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands Lo = DAG.getNode(ISD::SELECT, dl, NVT, isShort, LoS, LoL); 12139993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands Hi = DAG.getNode(ISD::SELECT, dl, NVT, isShort, HiS, HiL); 12146fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return true; 12156fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng case ISD::SRL: 12169993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands // Short: ShAmt < NVTBits 12179993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands HiS = DAG.getNode(ISD::SRL, dl, NVT, InH, Amt); 12189993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands LoS = DAG.getNode(ISD::OR, dl, NVT, 12199993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands DAG.getNode(ISD::SRL, dl, NVT, InL, Amt), 122036236b76a45be2a50315d1926c49bd3c63786b49Duncan Sands // FIXME: If Amt is zero, the following shift generates an undefined result 122136236b76a45be2a50315d1926c49bd3c63786b49Duncan Sands // on some architectures. 12229993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands DAG.getNode(ISD::SHL, dl, NVT, InH, AmtLack)); 12239993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands 12249993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands // Long: ShAmt >= NVTBits 12259993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands HiL = DAG.getConstant(0, NVT); // Hi part is zero. 12269993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands LoL = DAG.getNode(ISD::SRL, dl, NVT, InH, AmtExcess); // Lo from Hi part. 12279993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands 12289993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands Lo = DAG.getNode(ISD::SELECT, dl, NVT, isShort, LoS, LoL); 12299993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands Hi = DAG.getNode(ISD::SELECT, dl, NVT, isShort, HiS, HiL); 12306fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return true; 12316fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng case ISD::SRA: 12329993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands // Short: ShAmt < NVTBits 12339993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands HiS = DAG.getNode(ISD::SRA, dl, NVT, InH, Amt); 12349993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands LoS = DAG.getNode(ISD::OR, dl, NVT, 12356fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SRL, dl, NVT, InL, Amt), 123636236b76a45be2a50315d1926c49bd3c63786b49Duncan Sands // FIXME: If Amt is zero, the following shift generates an undefined result 123736236b76a45be2a50315d1926c49bd3c63786b49Duncan Sands // on some architectures. 12389993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands DAG.getNode(ISD::SHL, dl, NVT, InH, AmtLack)); 12399993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands 12409993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands // Long: ShAmt >= NVTBits 12419993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands HiL = DAG.getNode(ISD::SRA, dl, NVT, InH, // Sign of Hi part. 12429993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands DAG.getConstant(NVTBits-1, ShTy)); 12439993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands LoL = DAG.getNode(ISD::SRA, dl, NVT, InH, AmtExcess); // Lo from Hi part. 12446fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 12459993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands Lo = DAG.getNode(ISD::SELECT, dl, NVT, isShort, LoS, LoL); 12469993b88f06fd54c0be31d35f0970ada70a4c0439Duncan Sands Hi = DAG.getNode(ISD::SELECT, dl, NVT, isShort, HiS, HiL); 12476fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return true; 12486fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng } 12496fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 12506fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return false; 12516fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng} 12526fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 125305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUB(SDNode *N, 1254475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1255786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 125605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1257475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 125805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 125905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 126029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands 1261e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = LHSL.getValueType(); 1262475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1263475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 126405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 126529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // Do not generate ADDC/ADDE or SUBC/SUBE if the target does not support 126629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // them. TODO: Teach operation legalization how to expand unsupported 126729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // ADDC/ADDE/SUBC/SUBE. The problem is that these operations generate 1268825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson // a carry of type MVT::Flag, but there doesn't seem to be any way to 126929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // generate a value of this type in the expanded code sequence. 127029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands bool hasCarry = 1271f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(N->getOpcode() == ISD::ADD ? 1272f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman ISD::ADDC : ISD::SUBC, 1273bc7a902713c4e3f13a93c383e647d2a18712f447Dan Gohman TLI.getTypeToExpandTo(*DAG.getContext(), NVT)); 127429a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands 127529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (hasCarry) { 1276825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 127729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (N->getOpcode() == ISD::ADD) { 1278786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADDC, dl, VTList, LoOps, 2); 127929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands HiOps[2] = Lo.getValue(1); 1280786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADDE, dl, VTList, HiOps, 3); 128129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } else { 1282786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SUBC, dl, VTList, LoOps, 2); 128329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands HiOps[2] = Lo.getValue(1); 1284786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUBE, dl, VTList, HiOps, 3); 128529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } 128605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 128729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (N->getOpcode() == ISD::ADD) { 1288786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADD, dl, NVT, LoOps, 2); 1289786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, HiOps, 2); 1290786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Cmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Lo, LoOps[0], 129129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands ISD::SETULT); 1292786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Carry1 = DAG.getNode(ISD::SELECT, dl, NVT, Cmp1, 129329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), 129429a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(0, NVT)); 1295786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Cmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Lo, LoOps[1], 129629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands ISD::SETULT); 1297786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Carry2 = DAG.getNode(ISD::SELECT, dl, NVT, Cmp2, 129829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), Carry1); 1299786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, Carry2); 130029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } else { 1301786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SUB, dl, NVT, LoOps, 2); 1302786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUB, dl, NVT, HiOps, 2); 13035480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands SDValue Cmp = 1304f8d3ec2c5725a2010f11de4ba78f6127712a5fe7Dale Johannesen DAG.getSetCC(dl, TLI.getSetCCResultType(LoOps[0].getValueType()), 13055480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LoOps[0], LoOps[1], ISD::SETULT); 1306786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Borrow = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, 130729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), 130829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(0, NVT)); 1309786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUB, dl, NVT, Hi, Borrow); 131029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } 131105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 131205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 131305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 131405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBC(SDNode *N, 1315475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 131605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1317475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 1318786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 131905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 132005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 1321825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1322475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1323475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 132405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 132505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::ADDC) { 1326786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADDC, dl, VTList, LoOps, 2); 132705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 1328786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADDE, dl, VTList, HiOps, 3); 132905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1330786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SUBC, dl, VTList, LoOps, 2); 133105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 1332786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUBE, dl, VTList, HiOps, 3); 133305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 133405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1335874ae251c317788391f9c3f113957802d390a063Dale Johannesen // Legalized the flag result - switch anything that used the old flag to 1336874ae251c317788391f9c3f113957802d390a063Dale Johannesen // use the new one. 1337475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 133805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 133905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 134005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBE(SDNode *N, 1341475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 134205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1343475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 1344786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 134505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 134605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 1347825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1348475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[3] = { LHSL, RHSL, N->getOperand(2) }; 1349475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 135005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1351786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(N->getOpcode(), dl, VTList, LoOps, 3); 135205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 1353786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(N->getOpcode(), dl, VTList, HiOps, 3); 135405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1355874ae251c317788391f9c3f113957802d390a063Dale Johannesen // Legalized the flag result - switch anything that used the old flag to 1356874ae251c317788391f9c3f113957802d390a063Dale Johannesen // use the new one. 1357475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 135805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 135905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 136005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ANY_EXTEND(SDNode *N, 1361475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 136223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1363786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1364475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 136505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 136605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is any extension of the input (which degenerates to a copy). 1367786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ANY_EXTEND, dl, NVT, Op); 1368e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Hi = DAG.getUNDEF(NVT); // The high part is undefined. 136905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 137005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 137105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 137205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 137305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1374475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 137505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 137605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 137705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 137805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 137905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 138005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 138105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 138295db39a9de48f69f4d764335b492b83a698c7854Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertSext(SDNode *N, 1383475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1384786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 138595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 1386e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Lo.getValueType(); 1387e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 138895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned NVTBits = NVT.getSizeInBits(); 138995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned EVTBits = EVT.getSizeInBits(); 139095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 139195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands if (NVTBits < EVTBits) { 1392786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::AssertSext, dl, NVT, Hi, 13934ff28527bb8e5ed4ae4b65f0fa6967eb79a05d4cEvan Cheng DAG.getValueType(EVT::getIntegerVT(*DAG.getContext(), 13944ff28527bb8e5ed4ae4b65f0fa6967eb79a05d4cEvan Cheng EVTBits - NVTBits))); 139595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } else { 1396786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::AssertSext, dl, NVT, Lo, DAG.getValueType(EVT)); 139795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // The high part replicates the sign bit of Lo, make it explicit. 1398786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, Lo, 139992abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(NVTBits-1, TLI.getPointerTy())); 140095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } 140195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 140295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 140305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertZext(SDNode *N, 1404475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1405786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 140605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 1407e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Lo.getValueType(); 1408e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 140905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 141005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned EVTBits = EVT.getSizeInBits(); 141105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 141205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (NVTBits < EVTBits) { 1413786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::AssertZext, dl, NVT, Hi, 1414285fb1cc4a7ea924b4d94e9c2cb890125d56a7e0Evan Cheng DAG.getValueType(EVT::getIntegerVT(*DAG.getContext(), 1415285fb1cc4a7ea924b4d94e9c2cb890125d56a7e0Evan Cheng EVTBits - NVTBits))); 141605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1417786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::AssertZext, dl, NVT, Lo, DAG.getValueType(EVT)); 141805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part must be zero, make it explicit. 141905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 142005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 142105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 142205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 142305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_BSWAP(SDNode *N, 1424475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1425786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 142605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Hi, Lo); // Note swapped operands. 1427786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::BSWAP, dl, Lo.getValueType(), Lo); 1428786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::BSWAP, dl, Hi.getValueType(), Hi); 142905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 143005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 143105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Constant(SDNode *N, 1432475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 143323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 143405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NBitWidth = NVT.getSizeInBits(); 143505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const APInt &Cst = cast<ConstantSDNode>(N)->getAPIntValue(); 143605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(APInt(Cst).trunc(NBitWidth), NVT); 143705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(Cst.lshr(NBitWidth).trunc(NBitWidth), NVT); 143805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 143905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 144005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTLZ(SDNode *N, 1441475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1442786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 144305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctlz (HiLo) -> Hi != 0 ? ctlz(Hi) : (ctlz(Lo)+32) 144405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 1445e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Lo.getValueType(); 144605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1447786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue HiNotZero = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Hi, 1448ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 144905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1450786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue LoLZ = DAG.getNode(ISD::CTLZ, dl, NVT, Lo); 1451786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue HiLZ = DAG.getNode(ISD::CTLZ, dl, NVT, Hi); 145205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1453786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SELECT, dl, NVT, HiNotZero, HiLZ, 1454786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::ADD, dl, NVT, LoLZ, 145505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 145605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 145705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 145805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 145905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTPOP(SDNode *N, 1460475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1461786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 146205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctpop(HiLo) -> ctpop(Hi)+ctpop(Lo) 146305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 1464e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Lo.getValueType(); 1465b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Lo = DAG.getNode(ISD::ADD, dl, NVT, DAG.getNode(ISD::CTPOP, dl, NVT, Lo), 1466786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::CTPOP, dl, NVT, Hi)); 146705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 146805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 146905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 147005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTTZ(SDNode *N, 1471475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1472786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 147305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // cttz (HiLo) -> Lo != 0 ? cttz(Lo) : (cttz(Hi)+32) 147405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 1475e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Lo.getValueType(); 147605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1477786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue LoNotZero = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Lo, 1478ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 147905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1480786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue LoLZ = DAG.getNode(ISD::CTTZ, dl, NVT, Lo); 1481786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue HiLZ = DAG.getNode(ISD::CTTZ, dl, NVT, Hi); 148205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1483786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SELECT, dl, NVT, LoNotZero, LoLZ, 1484786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::ADD, dl, NVT, HiLZ, 148505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 148605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 148705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 148805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1489475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_SINT(SDNode *N, SDValue &Lo, 1490475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 1491c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1492e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 1493475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1494b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOSINT(Op.getValueType(), VT); 1495be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-sint conversion!"); 1496c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, &Op, 1, true/*irrelevant*/, dl), Lo, Hi); 1497ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1498ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 1499475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo, 1500475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 1501c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1502e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 1503475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1504b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOUINT(Op.getValueType(), VT); 1505be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-uint conversion!"); 1506c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, &Op, 1, false/*irrelevant*/, dl), Lo, Hi); 1507ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1508ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 150969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_LOAD(LoadSDNode *N, 1510475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1511ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalLoad(N)) { 1512ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands ExpandRes_NormalLoad(N, Lo, Hi); 151378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 151478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 151578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 151678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 151778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 1518e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 151923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 1520475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 1521475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 1522cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::LoadExtType ExtType = N->getExtensionType(); 1523cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 1524cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 1525cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 15261e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = N->isNonTemporal(); 1527786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1528cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 152978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1530cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 153178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 15328a55ce4a392f07ac1f3c183100ac591b7ad7c693Dan Gohman EVT MemVT = N->getMemoryVT(); 1533cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1534786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getExtLoad(ExtType, dl, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 15351e559443a17d1b335f697551c6263ba60d5dd827David Greene MemVT, isVolatile, isNonTemporal, Alignment); 1536cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1537cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Remember the chain. 1538cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = Lo.getValue(1); 1539cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1540cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExtType == ISD::SEXTLOAD) { 1541cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is obtained by SRA'ing all but one of the bits of the 1542cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // lo part. 154383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned LoSize = Lo.getValueType().getSizeInBits(); 1544786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, Lo, 154592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(LoSize-1, TLI.getPointerTy())); 1546cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (ExtType == ISD::ZEXTLOAD) { 1547cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is just a zero. 1548cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getConstant(0, NVT); 1549cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1550cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(ExtType == ISD::EXTLOAD && "Unknown extload!"); 1551cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is undefined. 1552e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Hi = DAG.getUNDEF(NVT); 1553cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1554cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 1555cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 1556786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getLoad(NVT, dl, Ch, Ptr, N->getSrcValue(), SVOffset, 15571e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 1558cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1559cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 156083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 156123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NEVT = EVT::getIntegerVT(*DAG.getContext(), ExcessBits); 1562cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1563cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 156483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1565786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 15660bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1567786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getExtLoad(ExtType, dl, NVT, Ch, Ptr, N->getSrcValue(), 1568cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 15691e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, 15701e559443a17d1b335f697551c6263ba60d5dd827David Greene MinAlign(Alignment, IncrementSize)); 1571cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1572cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1573cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1574825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1575cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1576cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1577cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned loads at 1578cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 15798a55ce4a392f07ac1f3c183100ac591b7ad7c693Dan Gohman EVT MemVT = N->getMemoryVT(); 15804e918b2c8ca81edd63f6708e08835b2c14648615Dan Gohman unsigned EBytes = MemVT.getStoreSize(); 158183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1582cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 1583cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1584cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load both the high bits and maybe some of the low bits. 1585786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getExtLoad(ExtType, dl, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 15868a55ce4a392f07ac1f3c183100ac591b7ad7c693Dan Gohman EVT::getIntegerVT(*DAG.getContext(), 15878a55ce4a392f07ac1f3c183100ac591b7ad7c693Dan Gohman MemVT.getSizeInBits() - ExcessBits), 15881e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 1589cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1590cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 1591786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 15920bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1593cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load the rest of the low bits. 1594786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, NVT, Ch, Ptr, N->getSrcValue(), 159583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SVOffset+IncrementSize, 159623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT::getIntegerVT(*DAG.getContext(), ExcessBits), 15971e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, 15981e559443a17d1b335f697551c6263ba60d5dd827David Greene MinAlign(Alignment, IncrementSize)); 1599cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1600cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1601cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1602825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1603cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1604cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 160583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 1606cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer low bits from the bottom of Hi to the top of Lo. 1607786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::OR, dl, NVT, Lo, 1608786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, Hi, 1609cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 161092abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy()))); 1611cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Move high bits to the right position in Hi. 16127fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands Hi = DAG.getNode(ExtType == ISD::SEXTLOAD ? ISD::SRA : ISD::SRL, dl, 1613786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NVT, Hi, 161483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 161592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 1616cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1617cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1618cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1619cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Legalized the chain result - switch anything that used the old chain to 1620cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // use the new one. 1621475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Ch); 1622cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1623cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 162469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Logical(SDNode *N, 1625475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1626786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1627475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 162869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 162969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 1630786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), LL, RL); 1631786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), LH, RH); 1632cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1633cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 163405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N, 1635475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1636e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 163723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 1638c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 163969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1640f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, NVT); 1641f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, NVT); 1642f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, NVT); 1643f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, NVT); 1644cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU || HasMULHS || HasUMUL_LOHI || HasSMUL_LOHI) { 1645475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 164669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 164769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 164883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned OuterBitSize = VT.getSizeInBits(); 1649e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands unsigned InnerBitSize = NVT.getSizeInBits(); 1650cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned LHSSB = DAG.ComputeNumSignBits(N->getOperand(0)); 1651cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned RHSSB = DAG.ComputeNumSignBits(N->getOperand(1)); 165269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1653e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands APInt HighMask = APInt::getHighBitsSet(OuterBitSize, InnerBitSize); 1654e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (DAG.MaskedValueIsZero(N->getOperand(0), HighMask) && 1655e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands DAG.MaskedValueIsZero(N->getOperand(1), HighMask)) { 1656cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The inputs are both zero-extended. 1657cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1658cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a umul_lohi. 1659786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::UMUL_LOHI, dl, DAG.getVTList(NVT, NVT), LL, RL); 1660ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1661cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1662cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1663cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU) { 1664cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhu+mul. 1665786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::MUL, dl, NVT, LL, RL); 1666786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::MULHU, dl, NVT, LL, RL); 1667cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1668cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1669cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1670e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (LHSSB > InnerBitSize && RHSSB > InnerBitSize) { 1671cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The input values are both sign-extended. 1672cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasSMUL_LOHI) { 1673cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a smul_lohi. 1674786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SMUL_LOHI, dl, DAG.getVTList(NVT, NVT), LL, RL); 1675ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1676cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1677cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1678cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHS) { 1679cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhs+mul. 1680786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::MUL, dl, NVT, LL, RL); 1681786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::MULHS, dl, NVT, LL, RL); 1682cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1683cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1684cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1685cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1686cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Lo,Hi = umul LHS, RHS. 1687786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue UMulLOHI = DAG.getNode(ISD::UMUL_LOHI, dl, 1688cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getVTList(NVT, NVT), LL, RL); 1689cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = UMulLOHI; 1690cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = UMulLOHI.getValue(1); 1691786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen RH = DAG.getNode(ISD::MUL, dl, NVT, LL, RH); 1692786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LH = DAG.getNode(ISD::MUL, dl, NVT, LH, RL); 1693786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, RH); 1694786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, LH); 1695cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1696cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1697e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (HasMULHU) { 1698786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::MUL, dl, NVT, LL, RL); 1699786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::MULHU, dl, NVT, LL, RL); 1700786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen RH = DAG.getNode(ISD::MUL, dl, NVT, LL, RH); 1701786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LH = DAG.getNode(ISD::MUL, dl, NVT, LH, RL); 1702786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, RH); 1703786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, LH); 1704e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands return; 1705e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands } 1706cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 170741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1708cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If nothing else, we can make a libcall. 17095ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1710825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 171115c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::MUL_I16; 1712825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 17135ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I32; 1714825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 1715e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LC = RTLIB::MUL_I64; 1716825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 17175ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I128; 17185ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported MUL!"); 1719e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands 1720475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1721c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, true/*irrelevant*/, dl), Lo, Hi); 172241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1723cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1724268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedmanvoid DAGTypeLegalizer::ExpandIntRes_SADDSUBO(SDNode *Node, 1725268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue &Lo, SDValue &Hi) { 1726268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue LHS = Node->getOperand(0); 1727268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue RHS = Node->getOperand(1); 1728268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1729268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1730268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Expand the result by simply replacing it with the equivalent 1731268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // non-overflow-checking operation. 1732268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 1733268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 1734268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman LHS, RHS); 1735268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SplitInteger(Sum, Lo, Hi); 1736268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1737268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Compute the overflow. 1738268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // 1739268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // LHSSign -> LHS >= 0 1740268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // RHSSign -> RHS >= 0 1741268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // SumSign -> Sum >= 0 1742268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // 1743268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Add: 1744268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 1745268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Sub: 1746268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 1747268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // 1748268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman EVT OType = Node->getValueType(1); 1749268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 1750268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1751268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 1752268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 1753268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 1754268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman Node->getOpcode() == ISD::SADDO ? 1755268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman ISD::SETEQ : ISD::SETNE); 1756268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1757268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 1758268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 1759268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1760268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 1761268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1762268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Use the calculated overflow everywhere. 1763268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman ReplaceValueWith(SDValue(Node, 1), Cmp); 1764268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman} 1765268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 176669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N, 1767475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1768e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 1769c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 17705ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 17715ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1772825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 1773a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::SDIV_I16; 1774825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 17755ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I32; 1776825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 17775ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I64; 1778825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 17795ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I128; 17805ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!"); 17815ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 1782475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1783c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, true, dl), Lo, Hi); 1784ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1785ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 178669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N, 1787475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1788e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 1789c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 179069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 179169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // If we can emit an efficient shift operation, do so now. Check to see if 1792cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the RHS is a constant. 1793cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N->getOperand(1))) 1794f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman return ExpandShiftByConstant(N, CN->getZExtValue(), Lo, Hi); 1795cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1796cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If we can determine that the high bit of the shift is zero or one, even if 1797cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the low bits are variable, emit this shift in an optimized form. 1798cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExpandShiftWithKnownAmountBit(N, Lo, Hi)) 1799cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 180069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1801cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this target supports shift_PARTS, use it. First, map to the _PARTS opc. 1802cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned PartsOpc; 180341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 1804cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SHL_PARTS; 180541edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 1806cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRL_PARTS; 180741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 1808cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 1809cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRA_PARTS; 1810cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 181169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1812cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Next check to see if the target supports this SHL_PARTS operation or if it 1813cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // will custom expand it. 181423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 1815cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::LegalizeAction Action = TLI.getOperationAction(PartsOpc, NVT); 1816cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if ((Action == TargetLowering::Legal && TLI.isTypeLegal(NVT)) || 1817cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Action == TargetLowering::Custom) { 1818cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Expand the subcomponents. 1819475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH; 182069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 182169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1822475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { LHSL, LHSH, N->getOperand(1) }; 1823e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LHSL.getValueType(); 1824fc1665793e62eb4f26d24b8a19eecf59cd872e2aDan Gohman Lo = DAG.getNode(PartsOpc, dl, DAG.getVTList(VT, VT), Ops, 3); 1825cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = Lo.getValue(1); 1826cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1827cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 182841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1829cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Otherwise, emit a libcall. 1830dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 183141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands bool isSigned; 183241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 183341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; /*sign irrelevant*/ 1834825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 183515c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::SHL_I16; 1836825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 1837dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I32; 1838825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 1839dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I64; 1840825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 1841dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I128; 184241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 184341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; 1844825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 184515c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::SRL_I16; 1846825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 1847dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I32; 1848825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 1849dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I64; 1850825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 1851dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I128; 185241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 185341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 185441edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = true; 1855825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 185615c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::SRA_I16; 1857825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 1858dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I32; 1859825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 1860dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I64; 1861825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 1862dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I128; 186341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } 18648c899ee031481dbece5f111379a274c848cb5902Duncan Sands 18656fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng if (LC != RTLIB::UNKNOWN_LIBCALL && TLI.getLibcallName(LC)) { 18666fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 18676fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SplitInteger(MakeLibCall(LC, VT, Ops, 2, isSigned, dl), Lo, Hi); 18686fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return; 18696fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng } 187041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 18716fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng if (!ExpandShiftWithUnknownAmountBit(N, Lo, Hi)) 1872c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unsupported shift!"); 187341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1874cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 187505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SIGN_EXTEND(SDNode *N, 1876475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 187723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1878786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1879475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 188005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 1881b3bc6352defdf1a5c6b1b0770d0c4d603f6524a8Duncan Sands // The low part is sign extension of the input (degenerates to a copy). 1882786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SIGN_EXTEND, dl, NVT, N->getOperand(0)); 188305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part is obtained by SRA'ing all but one of the bits of low part. 188405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned LoSize = NVT.getSizeInBits(); 1885786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, Lo, 188692abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(LoSize-1, TLI.getPointerTy())); 188705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 188805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 188905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 189005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 189105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1892475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 189305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 189405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 189505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 189605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 189705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 189805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 1899786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Hi.getValueType(), Hi, 1900285fb1cc4a7ea924b4d94e9c2cb890125d56a7e0Evan Cheng DAG.getValueType(EVT::getIntegerVT(*DAG.getContext(), 1901285fb1cc4a7ea924b4d94e9c2cb890125d56a7e0Evan Cheng ExcessBits))); 190205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 190305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 190405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 190505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer:: 1906475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandIntRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi) { 1907786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 190869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 1909e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 1910d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 191105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (EVT.bitsLE(Lo.getValueType())) { 191205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the low part if needed. 1913786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Lo.getValueType(), Lo, 191405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(1)); 1915d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 191605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part gets the sign extension from the lo-part. This handles 191705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // things like sextinreg V:i64 from i8. 1918786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, Hi.getValueType(), Lo, 191905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Hi.getValueType().getSizeInBits()-1, 192092abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 192105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 192205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. Leave the low part alone, 192305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the high part. 192405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 192505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands EVT.getSizeInBits() - Lo.getValueType().getSizeInBits(); 1926786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Hi.getValueType(), Hi, 192723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson DAG.getValueType(EVT::getIntegerVT(*DAG.getContext(), ExcessBits))); 192805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 192905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 1930d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 193105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N, 1932475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1933e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 1934c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 193505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 193605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1937825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 1938a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::SREM_I16; 1939825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 194005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I32; 1941825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 194205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I64; 1943825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 194405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I128; 194505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!"); 194605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1947475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1948c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, true, dl), Lo, Hi); 1949d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1950d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 195105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_TRUNCATE(SDNode *N, 1952475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 195323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 1954786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1955786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::TRUNCATE, dl, NVT, N->getOperand(0)); 1956786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRL, dl, 1957786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen N->getOperand(0).getValueType(), N->getOperand(0), 195892abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(NVT.getSizeInBits(), TLI.getPointerTy())); 1959786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::TRUNCATE, dl, NVT, Hi); 1960d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1961d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 1962268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedmanvoid DAGTypeLegalizer::ExpandIntRes_UADDSUBO(SDNode *N, 1963268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue &Lo, SDValue &Hi) { 1964268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue LHS = N->getOperand(0); 1965268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue RHS = N->getOperand(1); 1966268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman DebugLoc dl = N->getDebugLoc(); 1967268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1968268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Expand the result by simply replacing it with the equivalent 1969268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // non-overflow-checking operation. 1970268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue Sum = DAG.getNode(N->getOpcode() == ISD::UADDO ? 1971268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 1972268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman LHS, RHS); 1973268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SplitInteger(Sum, Lo, Hi); 1974268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1975268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Calculate the overflow: addition overflows iff a + b < a, and subtraction 1976268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // overflows iff a - b > a. 1977268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman SDValue Ofl = DAG.getSetCC(dl, N->getValueType(1), Sum, LHS, 1978268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman N->getOpcode () == ISD::UADDO ? 1979268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman ISD::SETULT : ISD::SETUGT); 1980268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 1981268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman // Use the calculated overflow everywhere. 1982268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman ReplaceValueWith(SDValue(N, 1), Ofl); 1983268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman} 1984268637ed0f34e10e4125e94c44ff3e2975a19166Eli Friedman 198505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N, 1986475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1987e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 1988c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1989d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 199005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1991825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 1992a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::UDIV_I16; 1993825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 199405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I32; 1995825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 199605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I64; 1997825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 199805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I128; 199905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!"); 2000d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 2001475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 2002c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, false, dl), Lo, Hi); 2003d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 2004cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 200505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N, 2006475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 2007e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getValueType(0); 2008c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 200969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 201005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 2011825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (VT == MVT::i16) 2012a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::UREM_I16; 2013825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i32) 201405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I32; 2015825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i64) 201605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I64; 2017825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (VT == MVT::i128) 201805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I128; 201905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!"); 2020cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2021475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 2022c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, false, dl), Lo, Hi); 2023cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 2024cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 202505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N, 2026475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 202723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); 2028786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 2029475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 203005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 2031b3bc6352defdf1a5c6b1b0770d0c4d603f6524a8Duncan Sands // The low part is zero extension of the input (degenerates to a copy). 2032786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, N->getOperand(0)); 203305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // The high part is just a zero. 203405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 203505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 203605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 203705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 203805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 2039475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 204005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 204105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 204205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 204305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 204405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 204505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 2046adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng Hi = DAG.getZeroExtendInReg(Hi, dl, 2047adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getIntegerVT(*DAG.getContext(), ExcessBits)); 20489e255b7df5a0a629920706e086e78ef89bf2f183Dan Gohman } 2049cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 2050cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2051cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2052cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 205369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Operand Expansion 2054cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 2055cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 205605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandIntegerOperand - This method is called when the specified operand of 205705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// the specified node is found to need expansion. At this point, all of the 205805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// result types of the node are known to be legal, but other operands of the 205905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// node may need promotion or expansion as well as the specified one. 206005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer::ExpandIntegerOperand(SDNode *N, unsigned OpNo) { 2061d765353da89988e949fd4c021d8860f36ab7c392David Greene DEBUG(dbgs() << "Expand integer operand: "; N->dump(&DAG); dbgs() << "\n"); 2062475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 2063051bb7b07504be9f848f7cce802e62ed24980bc5Duncan Sands 2064f43071beddb7ed5b2fd7d2f06c4130460616a13dDuncan Sands if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) 2065bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta return false; 206611ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 2067bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta switch (N->getOpcode()) { 2068bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta default: 206905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #ifndef NDEBUG 2070d765353da89988e949fd4c021d8860f36ab7c392David Greene dbgs() << "ExpandIntegerOperand Op #" << OpNo << ": "; 2071d765353da89988e949fd4c021d8860f36ab7c392David Greene N->dump(&DAG); dbgs() << "\n"; 207205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #endif 2073c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to expand this operator's operand!"); 2074bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta 2075bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break; 207692abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::BR_CC: Res = ExpandIntOp_BR_CC(N); break; 207792abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 2078bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 2079bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::INSERT_VECTOR_ELT: Res = ExpandOp_INSERT_VECTOR_ELT(N); break; 2080bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SCALAR_TO_VECTOR: Res = ExpandOp_SCALAR_TO_VECTOR(N); break; 208192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::SELECT_CC: Res = ExpandIntOp_SELECT_CC(N); break; 208292abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::SETCC: Res = ExpandIntOp_SETCC(N); break; 208392abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::SINT_TO_FP: Res = ExpandIntOp_SINT_TO_FP(N); break; 208492abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::STORE: Res = ExpandIntOp_STORE(cast<StoreSDNode>(N), OpNo); break; 208592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::TRUNCATE: Res = ExpandIntOp_TRUNCATE(N); break; 208692abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::UINT_TO_FP: Res = ExpandIntOp_UINT_TO_FP(N); break; 208755467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 208855467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SHL: 208955467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRA: 209055467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRL: 209155467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::ROTL: 20921c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov case ISD::ROTR: Res = ExpandIntOp_Shift(N); break; 20931c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov case ISD::RETURNADDR: 20941c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov case ISD::FRAMEADDR: Res = ExpandIntOp_RETURNADDR(N); break; 209505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 209669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 209705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is null, the sub-method took care of registering results etc. 2098ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 209947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 210047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // If the result is N, the sub-method updated N in place. Tell the legalizer 210147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // core about this. 210247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands if (Res.getNode() == N) 210305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 2104cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 210505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 210605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Invalid operand expansion"); 210705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2108475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 210905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 2110cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 2111cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 211211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// IntegerExpandSetCCOperands - Expand the operands of a comparison. This code 211311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// is shared among BR_CC, SELECT_CC, and SETCC handlers. 2114475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::IntegerExpandSetCCOperands(SDValue &NewLHS, 2115475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &NewRHS, 2116c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen ISD::CondCode &CCCode, 2117c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl) { 2118475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSLo, LHSHi, RHSLo, RHSHi; 211969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewLHS, LHSLo, LHSHi); 212069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewRHS, RHSLo, RHSHi); 212141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 2122cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (CCCode == ISD::SETEQ || CCCode == ISD::SETNE) { 212311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (RHSLo == RHSHi) { 212411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (ConstantSDNode *RHSCST = dyn_cast<ConstantSDNode>(RHSLo)) { 2125cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (RHSCST->isAllOnesValue()) { 2126cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Equality comparison to -1. 21277fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands NewLHS = DAG.getNode(ISD::AND, dl, 2128786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHSLo.getValueType(), LHSLo, LHSHi); 2129cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSLo; 2130cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2131cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 213211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 213311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 213469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2135786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getNode(ISD::XOR, dl, LHSLo.getValueType(), LHSLo, RHSLo); 2136786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewRHS = DAG.getNode(ISD::XOR, dl, LHSLo.getValueType(), LHSHi, RHSHi); 2137786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getNode(ISD::OR, dl, NewLHS.getValueType(), NewLHS, NewRHS); 2138cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 2139cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2140cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 214169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2142cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this is a comparison of the sign bit, just look at the top part. 2143cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // X > -1, x < 0 2144cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(NewRHS)) 2145002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((CCCode == ISD::SETLT && CST->isNullValue()) || // X < 0 2146cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETGT && CST->isAllOnesValue())) { // X > -1 2147cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = LHSHi; 2148cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSHi; 2149cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2150cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 215169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2152cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // FIXME: This generated code sucks. 2153cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::CondCode LowCC; 2154cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (CCCode) { 2155c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown integer setcc!"); 2156cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLT: 2157cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 2158cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGT: 2159cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 2160cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLE: 2161cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 2162cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGE: 2163cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 2164cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 216569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2166cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 2167cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 2168cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 216969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2170cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 2171cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 217278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen TargetLowering::DAGCombinerInfo DagCombineInfo(DAG, false, true, true, NULL); 2173475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2; 21745480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Tmp1 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSLo.getValueType()), 2175ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen LHSLo, RHSLo, LowCC, false, DagCombineInfo, dl); 2176ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp1.getNode()) 2177786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSLo.getValueType()), 21785480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LHSLo, RHSLo, LowCC); 21795480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Tmp2 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi.getValueType()), 2180ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen LHSHi, RHSHi, CCCode, false, DagCombineInfo, dl); 2181ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp2.getNode()) 2182786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Tmp2 = DAG.getNode(ISD::SETCC, dl, 2183786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen TLI.getSetCCResultType(LHSHi.getValueType()), 21845480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LHSHi, RHSHi, DAG.getCondCode(CCCode)); 218569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2186ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp1C = dyn_cast<ConstantSDNode>(Tmp1.getNode()); 2187ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp2C = dyn_cast<ConstantSDNode>(Tmp2.getNode()); 2188002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((Tmp1C && Tmp1C->isNullValue()) || 2189002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->isNullValue() && 2190cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLE || CCCode == ISD::SETGE || 2191cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGE || CCCode == ISD::SETULE)) || 2192002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->getAPIntValue() == 1 && 2193cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLT || CCCode == ISD::SETGT || 2194cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGT || CCCode == ISD::SETULT))) { 2195cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // low part is known false, returns high part. 2196cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LE / GE, if high part is known false, ignore the low part. 2197cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LT / GT, if high part is known true, ignore the low part. 2198cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = Tmp2; 2199475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 2200cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2201cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 220269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 22035480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands NewLHS = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi.getValueType()), 2204fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel LHSHi, RHSHi, ISD::SETEQ, false, 2205ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen DagCombineInfo, dl); 2206ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!NewLHS.getNode()) 2207786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()), 22085480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LHSHi, RHSHi, ISD::SETEQ); 2209786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getNode(ISD::SELECT, dl, Tmp1.getValueType(), 2210cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS, Tmp1, Tmp2); 2211475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 2212cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 2213cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2214475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_BR_CC(SDNode *N) { 2215475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 221605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 2217c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 221805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 221905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 222005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 2221ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 222205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 222305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 222405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 222505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 222605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 2227475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 222805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode), NewLHS, NewRHS, 222905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(4)); 223005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 223105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2232475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SELECT_CC(SDNode *N) { 2233475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 223405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 2235c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 223605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 223705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 223805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 2239ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 224005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 224105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 224205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 224305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 224405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 2245475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 224605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(2), N->getOperand(3), 224705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 224805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 224905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2250475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SETCC(SDNode *N) { 2251475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 225205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 2253c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 225405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 225505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, use it. 2256ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 225705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(NewLHS.getValueType() == N->getValueType(0) && 225805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Unexpected setcc expansion!"); 225905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return NewLHS; 226005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 226105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 226205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, update N to have the operands specified. 2263475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 226405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 226505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 226605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 226755467af31620c9d027e071ebcd9746b7593cff17Sanjiv GuptaSDValue DAGTypeLegalizer::ExpandIntOp_Shift(SDNode *N) { 226855467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta // The value being shifted is legal, but the shift amount is too big. 226955467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta // It follows that either the result of the shift is undefined, or the 227055467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta // upper half of the shift amount is zero. Just use the lower half. 227155467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta SDValue Lo, Hi; 227255467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta GetExpandedInteger(N->getOperand(1), Lo, Hi); 227355467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Lo); 227455467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta} 227555467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 22761c3436a67afcfaee5f972836ff1ffff2985adce1Anton KorobeynikovSDValue DAGTypeLegalizer::ExpandIntOp_RETURNADDR(SDNode *N) { 22771c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov // The argument of RETURNADDR / FRAMEADDR builtin is 32 bit contant. This 22781c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov // surely makes pretty nice problems on 8/16 bit targets. Just truncate this 22791c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov // constant to valid type. 22801c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov SDValue Lo, Hi; 22811c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov GetExpandedInteger(N->getOperand(0), Lo, Hi); 22821c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov return DAG.UpdateNodeOperands(SDValue(N, 0), Lo); 22831c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov} 22841c3436a67afcfaee5f972836ff1ffff2985adce1Anton Korobeynikov 2285475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) { 2286475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 2287e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DstVT = N->getValueType(0); 2288b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), DstVT); 228905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 229005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this SINT_TO_FP!"); 2291c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen return MakeLibCall(LC, DstVT, &Op, 1, true, N->getDebugLoc()); 229205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 229305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2294475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo) { 2295ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalStore(N)) 2296ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands return ExpandOp_NormalStore(N, OpNo); 229778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 229878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 2299cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(OpNo == 1 && "Can only expand the stored value so far"); 2300cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2301e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = N->getOperand(1).getValueType(); 230223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT); 2303475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 2304475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 2305cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 2306cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 2307cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 23081e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = N->isNonTemporal(); 2309786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 2310475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 2311cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2312a1ace76c70ae5332d6f33fce5c0c1e2fdb8cca11Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 2313cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 231478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 231569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2316786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getTruncStore(Ch, dl, Lo, Ptr, N->getSrcValue(), SVOffset, 23171e559443a17d1b335f697551c6263ba60d5dd827David Greene N->getMemoryVT(), isVolatile, isNonTemporal, 23181e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 2319cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 2320cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 232169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2322cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2323786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getStore(Ch, dl, Lo, Ptr, N->getSrcValue(), SVOffset, 23241e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 2325cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2326cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 232783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 232823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NEVT = EVT::getIntegerVT(*DAG.getContext(), ExcessBits); 2329cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2330cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 233183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 2332786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 23330bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 2334786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getTruncStore(Ch, dl, Hi, Ptr, N->getSrcValue(), 2335cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 23361e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, 23371e559443a17d1b335f697551c6263ba60d5dd827David Greene MinAlign(Alignment, IncrementSize)); 2338825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 2339cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 2340cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned stores at 2341cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 234269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2343cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2344e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtVT = N->getMemoryVT(); 23454e918b2c8ca81edd63f6708e08835b2c14648615Dan Gohman unsigned EBytes = ExtVT.getStoreSize(); 234683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 2347cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 2348adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT HiVT = EVT::getIntegerVT(*DAG.getContext(), 2349adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng ExtVT.getSizeInBits() - ExcessBits); 2350cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 235183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 2352cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer high bits from the top of Lo to the bottom of Hi. 2353786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SHL, dl, NVT, Hi, 235483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 235592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 2356786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::OR, dl, NVT, Hi, 2357de06470330260f5937e7ca558f5f5b3e171f2ee5Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, Lo, 2358cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 235992abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy()))); 2360cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2361cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2362cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store both the high bits and maybe some of the low bits. 2363786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getTruncStore(Ch, dl, Hi, Ptr, N->getSrcValue(), 23641e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, HiVT, isVolatile, isNonTemporal, 23651e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 2366cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2367cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 2368786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 23690bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 2370cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store the lowest ExcessBits bits in the second half. 2371786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getTruncStore(Ch, dl, Lo, Ptr, N->getSrcValue(), 2372cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, 237323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT::getIntegerVT(*DAG.getContext(), ExcessBits), 23741e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, 23751e559443a17d1b335f697551c6263ba60d5dd827David Greene MinAlign(Alignment, IncrementSize)); 2376825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 2377cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2378cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 237905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2380475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_TRUNCATE(SDNode *N) { 2381475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 238205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 238305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Just truncate the low part of the source. 2384786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), N->getValueType(0), InL); 238505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 238605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 23878d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesenstatic const fltSemantics *EVTToAPFloatSemantics(EVT VT) { 23888d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen switch (VT.getSimpleVT().SimpleTy) { 23898d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen default: llvm_unreachable("Unknown FP format"); 23908d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen case MVT::f32: return &APFloat::IEEEsingle; 23918d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen case MVT::f64: return &APFloat::IEEEdouble; 23928d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen case MVT::f80: return &APFloat::x87DoubleExtended; 23938d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen case MVT::f128: return &APFloat::IEEEquad; 23948d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen case MVT::ppcf128: return &APFloat::PPCDoubleDouble; 23958d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen } 23968d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen} 23978d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen 2398475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) { 2399475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 2400e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SrcVT = Op.getValueType(); 2401e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DstVT = N->getValueType(0); 2402c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 240305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 24048d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen // The following optimization is valid only if every value in SrcVT (when 24058d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen // treated as signed) is representable in DstVT. Check that the mantissa 24068d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen // size of DstVT is >= than the number of bits in SrcVT -1. 24078d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen const fltSemantics *sem = EVTToAPFloatSemantics(DstVT); 24088d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen if (APFloat::semanticsPrecision(*sem) >= SrcVT.getSizeInBits()-1 && 24098d908ebd1926d00ff47d8284e52657705efb7f9bDale Johannesen TLI.getOperationAction(ISD::SINT_TO_FP, SrcVT) == TargetLowering::Custom){ 241005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Do a signed conversion then adjust the result. 2411786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue SignedConv = DAG.getNode(ISD::SINT_TO_FP, dl, DstVT, Op); 241205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SignedConv = TLI.LowerOperation(SignedConv, DAG); 241305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 241405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The result of the signed conversion needs adjusting if the 'sign bit' of 241505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // the incoming integer was set. To handle this, we dynamically test to see 241605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // if it is set, and, if so, add a fudge factor. 241705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 241805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE32 = 0x4F800000ULL; 241905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE64 = 0x5F800000ULL; 242005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE128 = 0x7F800000ULL; 242105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 242205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt FF(32, 0); 2423825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (SrcVT == MVT::i32) 242405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE32); 2425825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (SrcVT == MVT::i64) 242605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE64); 2427825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson else if (SrcVT == MVT::i128) 242805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE128); 242905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else 243005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(false && "Unsupported UINT_TO_FP!"); 243105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 243205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Check whether the sign bit is set. 2433475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 243405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(Op, Lo, Hi); 24357fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands SDValue SignSet = DAG.getSetCC(dl, 2436786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen TLI.getSetCCResultType(Hi.getValueType()), 24375480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Hi, DAG.getConstant(0, Hi.getValueType()), 2438ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands ISD::SETLT); 243905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 244005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Build a 64 bit pair (0, FF) in the constant pool, with FF in the lo bits. 2441001dbfebcbbded8c8e74b19e838b50da2b6c6fb5Owen Anderson SDValue FudgePtr = DAG.getConstantPool( 2442eed707b1e6097aac2bb6b3d47271f6300ace7f2eOwen Anderson ConstantInt::get(*DAG.getContext(), FF.zext(64)), 244349c18cce976c158e86f54c681dff21bb81640fb8Duncan Sands TLI.getPointerTy()); 244405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 244505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get a pointer to FF if the sign bit was set, or to 0 otherwise. 2446475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0); 2447475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Four = DAG.getIntPtrConstant(4); 244805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.isBigEndian()) std::swap(Zero, Four); 2449786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Offset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), SignSet, 2450ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands Zero, Four); 24511606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(FudgePtr)->getAlignment(); 2452786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen FudgePtr = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), FudgePtr, Offset); 245387a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 245405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 245505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Load the value out, extending it from f32 to the destination float type. 245605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // FIXME: Avoid the extend by constructing the right constant pool? 2457786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Fudge = DAG.getExtLoad(ISD::EXTLOAD, dl, DstVT, DAG.getEntryNode(), 2458825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson FudgePtr, NULL, 0, MVT::f32, 24591e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 2460786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::FADD, dl, DstVT, SignedConv, Fudge); 246105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 246205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 246305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, use a libcall. 2464b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getUINTTOFP(SrcVT, DstVT); 246505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 246605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this UINT_TO_FP!"); 2467c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen return MakeLibCall(LC, DstVT, &Op, 1, true, dl); 246805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 2469