LegalizeIntegerTypes.cpp revision fd87a544c00c2ca04ee23aae67bbcad4dc852a54
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) { 36fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman DEBUG(errs() << "Promote integer result: "; N->dump(&DAG); errs() << "\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 46fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman errs() << "PromoteIntegerResult #" << ResNo << ": "; 47fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman N->dump(&DAG); errs() << "\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 8369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AND: 8469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::OR: 8569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::XOR: 8669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ADD: 8769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SUB: 889fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::MUL: Res = PromoteIntRes_SimpleIntBinOp(N); break; 8969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SDIV: 919fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SREM: Res = PromoteIntRes_SDIV(N); break; 9269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::UDIV: 949fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::UREM: Res = PromoteIntRes_UDIV(N); break; 958ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 96253174bf50c932abaa680f465e2888c0e5272267Bill Wendling case ISD::SADDO: 979fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::SSUBO: Res = PromoteIntRes_SADDSUBO(N, ResNo); break; 9874c376529101acbe141a256d0bf23a44eb454c84Bill Wendling case ISD::UADDO: 999fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::USUBO: Res = PromoteIntRes_UADDSUBO(N, ResNo); break; 10074c376529101acbe141a256d0bf23a44eb454c84Bill Wendling case ISD::SMULO: 1019fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands case ISD::UMULO: Res = PromoteIntRes_XMULO(N, ResNo); break; 102b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 1030b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_ADD: 1040b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_SUB: 1050b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_AND: 1060b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_OR: 1070b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_XOR: 1080b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_NAND: 1090b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_MIN: 1100b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_MAX: 1110b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_UMIN: 1120b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_LOAD_UMAX: 1130b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_SWAP: 1149fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands Res = PromoteIntRes_Atomic1(cast<AtomicSDNode>(N)); break; 115b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 1160b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman case ISD::ATOMIC_CMP_SWAP: 1179fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands Res = PromoteIntRes_Atomic2(cast<AtomicSDNode>(N)); break; 11869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 11969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1209fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands // If the result is null then the sub-method took care of registering it. 1219fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands if (Res.getNode()) 1229fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands SetPromotedInteger(SDValue(N, ResNo), Res); 12369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 12469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 125475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertSext(SDNode *N) { 12695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Sign-extend the new bits, and continue the assertion. 127c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = SExtPromotedInteger(N->getOperand(0)); 128786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::AssertSext, N->getDebugLoc(), 129786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op.getValueType(), Op, N->getOperand(1)); 13095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 13195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 132475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertZext(SDNode *N) { 13395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Zero the new bits, and continue the assertion. 134c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = ZExtPromotedInteger(N->getOperand(0)); 135786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::AssertZext, N->getDebugLoc(), 136786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op.getValueType(), Op, N->getOperand(1)); 13795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 13895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 139b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Atomic1(AtomicSDNode *N) { 140b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op2 = GetPromotedInteger(N->getOperand(2)); 1417fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands SDValue Res = DAG.getAtomic(N->getOpcode(), N->getDebugLoc(), 142786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen N->getMemoryVT(), 1430b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman N->getChain(), N->getBasePtr(), 144b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Op2, N->getSrcValue(), N->getAlignment()); 145b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // Legalized the chain result - switch anything that used the old chain to 146b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // use the new one. 147b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 148b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands return Res; 149b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands} 150b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 151b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Atomic2(AtomicSDNode *N) { 152b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op2 = GetPromotedInteger(N->getOperand(2)); 153b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op3 = GetPromotedInteger(N->getOperand(3)); 154fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Res = DAG.getAtomic(N->getOpcode(), N->getDebugLoc(), 155f8d3ec2c5725a2010f11de4ba78f6127712a5fe7Dale Johannesen N->getMemoryVT(), N->getChain(), N->getBasePtr(), 156b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Op2, Op3, N->getSrcValue(), N->getAlignment()); 157b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // Legalized the chain result - switch anything that used the old chain to 158b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // use the new one. 159b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 160b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands return Res; 161b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands} 162b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 163475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BIT_CONVERT(SDNode *N) { 164475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InOp = N->getOperand(0); 16569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT InVT = InOp.getValueType(); 16669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NInVT = TLI.getTypeToTransformTo(InVT); 16747d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands MVT OutVT = N->getValueType(0); 16847d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands MVT NOutVT = TLI.getTypeToTransformTo(OutVT); 169786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 17069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 17169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (getTypeAction(InVT)) { 17269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: 17369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(false && "Unknown type action!"); 17469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 17569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case Legal: 17669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 17769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case PromoteInteger: 17847d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands if (NOutVT.bitsEq(NInVT)) 17969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The input promotes to the same size. Convert the promoted value. 1807fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, dl, 181786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NOutVT, GetPromotedInteger(InOp)); 18269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 1834fc4fd657d4266059dac3849133a3a351b03d99dDuncan Sands case SoftenFloat: 18469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the integer operand by hand. 185786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT, GetSoftenedFloat(InOp)); 18669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandInteger: 18769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandFloat: 18869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 189f4e4629ee8c218f892ad8ae3e182fe40bc160895Duncan Sands case ScalarizeVector: 19069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert the element to an integer and promote it by hand. 191786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT, 19269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands BitConvertToInteger(GetScalarizedVector(InOp))); 19387c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang case SplitVector: { 19469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // For example, i32 = BIT_CONVERT v2i16 on alpha. Convert the split 19569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // pieces of the input into integers and reassemble in the final type. 196475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 19769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetSplitVector(N->getOperand(0), Lo, Hi); 19869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Lo = BitConvertToInteger(Lo); 19969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Hi = BitConvertToInteger(Hi); 20069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 20169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 20269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 20369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 204786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen InOp = DAG.getNode(ISD::ANY_EXTEND, dl, 20547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands MVT::getIntegerVT(NOutVT.getSizeInBits()), 20669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands JoinIntegers(Lo, Hi)); 207786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, InOp); 20869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 20987c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang case WidenVector: 21087c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang if (OutVT.bitsEq(NInVT)) 21187c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang // The input is widened to the same size. Convert to the widened value. 212786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::BIT_CONVERT, dl, OutVT, GetWidenedVector(InOp)); 21387c8a8f304d1ee72829086ce2c41a8fa3813ba6aMon P Wang } 21469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 215aad3460086a1b29c55f7490c6d8743ea4e53f07dEli Friedman return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT, 216aad3460086a1b29c55f7490c6d8743ea4e53f07dEli Friedman CreateStackStoreLoad(InOp, OutVT)); 21769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 21869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 219475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BSWAP(SDNode *N) { 220475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 221c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands MVT OVT = N->getValueType(0); 222c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands MVT NVT = Op.getValueType(); 223786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 224c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 225c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 226786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SRL, dl, NVT, DAG.getNode(ISD::BSWAP, dl, NVT, Op), 22792abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(DiffBits, TLI.getPointerTy())); 228c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands} 229c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 230475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BUILD_PAIR(SDNode *N) { 231bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The pair element type may be legal, or may not promote to the same type as 232bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // the result, for example i14 = BUILD_PAIR (i7, i7). Handle all cases. 233786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), 234bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getTypeToTransformTo(N->getValueType(0)), 235bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands JoinIntegers(N->getOperand(0), N->getOperand(1))); 23669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 23769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 238475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_Constant(SDNode *N) { 23969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VT = N->getValueType(0); 240b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen // FIXME there is no actual debug info here 241b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen DebugLoc dl = N->getDebugLoc(); 242bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Zero extend things like i1, sign extend everything else. It shouldn't 243bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // matter in theory which one we pick, but this tends to give better code? 244bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Opc = VT.isByteSized() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 245b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen SDValue Result = DAG.getNode(Opc, dl, TLI.getTypeToTransformTo(VT), 246a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands SDValue(N, 0)); 247bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(isa<ConstantSDNode>(Result) && "Didn't constant fold ext?"); 248bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Result; 24969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 25069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 25100ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P WangSDValue DAGTypeLegalizer::PromoteIntRes_CONVERT_RNDSAT(SDNode *N) { 25200ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang ISD::CvtCode CvtCode = cast<CvtRndSatSDNode>(N)->getCvtCode(); 25300ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang assert ((CvtCode == ISD::CVT_SS || CvtCode == ISD::CVT_SU || 25400ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang CvtCode == ISD::CVT_US || CvtCode == ISD::CVT_UU || 25500ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang CvtCode == ISD::CVT_SF || CvtCode == ISD::CVT_UF) && 25600ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang "can only promote integers"); 25700ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang MVT OutVT = TLI.getTypeToTransformTo(N->getValueType(0)); 258c460ae90019ddb19d4c07b2cd2fbaecfa7adf67dDale Johannesen return DAG.getConvertRndSat(OutVT, N->getDebugLoc(), N->getOperand(0), 25900ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang N->getOperand(1), N->getOperand(2), 26000ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang N->getOperand(3), N->getOperand(4), CvtCode); 26100ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang} 26200ec49b6bafc33ee17d97ec1c723e1edb41d4c97Mon P Wang 263475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTLZ(SDNode *N) { 264c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands // Zero extend to the promoted type and do the count there. 265c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = ZExtPromotedInteger(N->getOperand(0)); 266b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen DebugLoc dl = N->getDebugLoc(); 26769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 26869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 269b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Op = DAG.getNode(ISD::CTLZ, dl, NVT, Op); 27069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Subtract off the extra leading bits in the bigger type. 271b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen return DAG.getNode(ISD::SUB, dl, NVT, Op, 27269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(NVT.getSizeInBits() - 27369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands OVT.getSizeInBits(), NVT)); 27469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 27569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 276475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTPOP(SDNode *N) { 27769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Zero extend to the promoted type and do the count there. 278c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Op = ZExtPromotedInteger(N->getOperand(0)); 279786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::CTPOP, N->getDebugLoc(), Op.getValueType(), Op); 28069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 28169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 282475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTTZ(SDNode *N) { 283475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 28469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 28569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 286786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 28769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The count is the same in the promoted type except if the original 28869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // value was zero. This can be handled by setting the bit just off 28969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the top of the original type. 29003dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands APInt TopBit(NVT.getSizeInBits(), 0); 29103dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands TopBit.set(OVT.getSizeInBits()); 292786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op = DAG.getNode(ISD::OR, dl, NVT, Op, DAG.getConstant(TopBit, NVT)); 293786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::CTTZ, dl, NVT, Op); 29469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 29569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 296475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N) { 297786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 298c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 299c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NVT, N->getOperand(0), 300c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman N->getOperand(1)); 30169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 30269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 303475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_FP_TO_XINT(SDNode *N) { 304bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 305a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands unsigned NewOpc = N->getOpcode(); 306786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 307d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 3084c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen // If we're promoting a UINT to a larger size and the larger FP_TO_UINT is 3094c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen // not Legal, check to see if we can use FP_TO_SINT instead. (If both UINT 3104c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen // and SINT conversions are Custom, there is no way to tell which is preferable. 3118c899ee031481dbece5f111379a274c848cb5902Duncan Sands // We choose SINT because that's the right thing on PPC.) 312a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands if (N->getOpcode() == ISD::FP_TO_UINT && 3134c9369df57a52cec5e1fc735e61a979766288074Dale Johannesen !TLI.isOperationLegal(ISD::FP_TO_UINT, NVT) && 314f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NVT)) 315a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands NewOpc = ISD::FP_TO_SINT; 316a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands 317786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(NewOpc, dl, NVT, N->getOperand(0)); 318a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands 319a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands // Assert that the converted value fits in the original type. If it doesn't 320a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands // (eg: because the value being converted is too big), then the result of the 321a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands // original operation was undefined anyway, so the assert is still correct. 322a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands return DAG.getNode(N->getOpcode() == ISD::FP_TO_UINT ? 323786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen ISD::AssertZext : ISD::AssertSext, dl, 324a29c13086a3add78a3a79f744573fe09eaa9dc88Duncan Sands NVT, Res, DAG.getValueType(N->getValueType(0))); 325d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands} 326d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 327475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_INT_EXTEND(SDNode *N) { 328bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 329786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 330be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 331bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (getTypeAction(N->getOperand(0).getValueType()) == PromoteInteger) { 332475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 3336959b2bb6521baca57e5507ca039e51002d4a971Duncan Sands assert(Res.getValueType().bitsLE(NVT) && "Extension doesn't make sense!"); 334126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 335bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result and operand types are the same after promotion, simplify 336bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // to an in-register extension. 337bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (NVT == Res.getValueType()) { 338bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The high bits are not guaranteed to be anything. Insert an extend. 339bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::SIGN_EXTEND) 340786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, NVT, Res, 341bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(N->getOperand(0).getValueType())); 342bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::ZERO_EXTEND) 3434be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen return DAG.getZeroExtendInReg(Res, dl, N->getOperand(0).getValueType()); 344bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(N->getOpcode() == ISD::ANY_EXTEND && "Unknown integer extension!"); 345bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 346126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands } 34769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 34869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 349bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Otherwise, just extend the original operand all the way to the larger type. 350786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), dl, NVT, N->getOperand(0)); 351bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 35269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 353475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_LOAD(LoadSDNode *N) { 354bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 355bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 356bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::LoadExtType ExtType = 357bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::isNON_EXTLoad(N) ? ISD::EXTLOAD : N->getExtensionType(); 358786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 359786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getExtLoad(ExtType, dl, NVT, N->getChain(), N->getBasePtr(), 36047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands N->getSrcValue(), N->getSrcValueOffset(), 36147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands N->getMemoryVT(), N->isVolatile(), 36247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands N->getAlignment()); 36369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 364bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 365bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 366475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 367bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 36869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 36969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 370874ae251c317788391f9c3f113957802d390a063Dale Johannesen/// Promote the overflow flag of an overflowing arithmetic node. 371ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Overflow(SDNode *N) { 372ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Simply change the return type of the boolean result. 373ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(1)); 374ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands MVT ValueVTs[] = { N->getValueType(0), NVT }; 375ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue Ops[] = { N->getOperand(0), N->getOperand(1) }; 376786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(N->getOpcode(), N->getDebugLoc(), 377786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getVTList(ValueVTs, 2), Ops, 2); 378ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 379ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Modified the sum result - switch anything that used the old sum to use 380ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // the new one. 381ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands ReplaceValueWith(SDValue(N, 0), Res); 382ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 383ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return SDValue(Res.getNode(), 1); 384ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 385ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 386ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo) { 387ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands if (ResNo == 1) 388ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return PromoteIntRes_Overflow(N); 389ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 390ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // The operation overflowed iff the result in the larger type is not the 391ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // sign extension of its truncation to the original type. 392ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue LHS = SExtPromotedInteger(N->getOperand(0)); 393ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue RHS = SExtPromotedInteger(N->getOperand(1)); 394ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands MVT OVT = N->getOperand(0).getValueType(); 395ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands MVT NVT = LHS.getValueType(); 396786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 397ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 398ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Do the arithmetic in the larger type. 399ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands unsigned Opcode = N->getOpcode() == ISD::SADDO ? ISD::ADD : ISD::SUB; 400786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(Opcode, dl, NVT, LHS, RHS); 401ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 402ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Calculate the overflow flag: sign extend the arithmetic result from 403ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // the original type. 404786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Ofl = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, NVT, Res, 405ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands DAG.getValueType(OVT)); 406ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Overflowed if and only if this is not equal to Res. 407786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ofl = DAG.getSetCC(dl, N->getValueType(1), Ofl, Res, ISD::SETNE); 408ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 409ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Use the calculated overflow everywhere. 410ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands ReplaceValueWith(SDValue(N, 1), Ofl); 411ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 412ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return Res; 413ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 414ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 415475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SDIV(SDNode *N) { 416bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Sign extend the input. 417c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue LHS = SExtPromotedInteger(N->getOperand(0)); 418c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue RHS = SExtPromotedInteger(N->getOperand(1)); 419786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), N->getDebugLoc(), 420786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), LHS, RHS); 42169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 42269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 423475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT(SDNode *N) { 424475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(1)); 425475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(2)); 426786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SELECT, N->getDebugLoc(), 427786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), N->getOperand(0),LHS,RHS); 42869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 42969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 430475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT_CC(SDNode *N) { 431475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(2)); 432475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(3)); 433786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SELECT_CC, N->getDebugLoc(), 434786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), N->getOperand(0), 435bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 43669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 43769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 438475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SETCC(SDNode *N) { 4395480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands MVT SVT = TLI.getSetCCResultType(N->getOperand(0).getValueType()); 4407e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(isTypeLegal(SVT) && "Illegal SetCC type!"); 441786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 4427e4982287591945c4e42ba8470a978e629789c76Duncan Sands 4437e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Get the SETCC result using the canonical SETCC type. 444786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue SetCC = DAG.getNode(ISD::SETCC, dl, SVT, N->getOperand(0), 4457e4982287591945c4e42ba8470a978e629789c76Duncan Sands N->getOperand(1), N->getOperand(2)); 4467e4982287591945c4e42ba8470a978e629789c76Duncan Sands 4477e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Convert to the expected type. 4487e4982287591945c4e42ba8470a978e629789c76Duncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 4496959b2bb6521baca57e5507ca039e51002d4a971Duncan Sands assert(NVT.bitsLE(SVT) && "Integer type overpromoted?"); 450786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, NVT, SetCC); 45169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 45269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 453475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SHL(SDNode *N) { 454786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SHL, N->getDebugLoc(), 455786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen TLI.getTypeToTransformTo(N->getValueType(0)), 456bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands GetPromotedInteger(N->getOperand(0)), N->getOperand(1)); 45769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 45869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 459475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N) { 460475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 461786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SIGN_EXTEND_INREG, N->getDebugLoc(), 462786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op.getValueType(), Op, N->getOperand(1)); 4638d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands} 4648d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands 465475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SimpleIntBinOp(SDNode *N) { 466bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input may have strange things in the top bits of the registers, but 467bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // these operations don't care. They may have weird bits going out, but 468bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that too is okay if they are integer operations. 469475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 470475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 471786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), N->getDebugLoc(), 472786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), LHS, RHS); 47369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 47469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 475475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRA(SDNode *N) { 476bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly sign extended. 477c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Res = SExtPromotedInteger(N->getOperand(0)); 478786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SRA, N->getDebugLoc(), 479786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Res.getValueType(), Res, N->getOperand(1)); 480bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 48169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 482475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRL(SDNode *N) { 483bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly zero extended. 484bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 485bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 486475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = ZExtPromotedInteger(N->getOperand(0)); 487786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SRL, N->getDebugLoc(), NVT, Res, N->getOperand(1)); 48869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 48969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 490475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_TRUNCATE(SDNode *N) { 4916959b2bb6521baca57e5507ca039e51002d4a971Duncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 492475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res; 49369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 494bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (getTypeAction(N->getOperand(0).getValueType())) { 495c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown type action!"); 496bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case Legal: 497bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ExpandInteger: 498bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = N->getOperand(0); 499bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 500bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case PromoteInteger: 501bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = GetPromotedInteger(N->getOperand(0)); 502bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 503bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 504bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 505bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate to NVT instead of VT 506786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), NVT, Res); 50769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 50869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 509ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo) { 510ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands if (ResNo == 1) 511ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return PromoteIntRes_Overflow(N); 512ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 513ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // The operation overflowed iff the result in the larger type is not the 514ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // zero extension of its truncation to the original type. 515c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue LHS = ZExtPromotedInteger(N->getOperand(0)); 516c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue RHS = ZExtPromotedInteger(N->getOperand(1)); 517ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands MVT OVT = N->getOperand(0).getValueType(); 518ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands MVT NVT = LHS.getValueType(); 519786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 52069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 521ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Do the arithmetic in the larger type. 522ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands unsigned Opcode = N->getOpcode() == ISD::UADDO ? ISD::ADD : ISD::SUB; 523786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(Opcode, dl, NVT, LHS, RHS); 5248ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 525ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Calculate the overflow flag: zero extend the arithmetic result from 526ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // the original type. 5274be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen SDValue Ofl = DAG.getZeroExtendInReg(Res, dl, OVT); 528ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Overflowed if and only if this is not equal to Res. 529786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ofl = DAG.getSetCC(dl, N->getValueType(1), Ofl, Res, ISD::SETNE); 5308ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 531ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Use the calculated overflow everywhere. 532ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands ReplaceValueWith(SDValue(N, 1), Ofl); 5338ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 534ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return Res; 535ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 536ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands 537ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_UDIV(SDNode *N) { 538ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands // Zero extend the input. 539ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue LHS = ZExtPromotedInteger(N->getOperand(0)); 540ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands SDValue RHS = ZExtPromotedInteger(N->getOperand(1)); 541786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(N->getOpcode(), N->getDebugLoc(), 542786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHS.getValueType(), LHS, RHS); 5438ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling} 5448ac0d4b4fb10406278cd600214cd3ee6d76620cdBill Wendling 545475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UNDEF(SDNode *N) { 546e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen return DAG.getUNDEF(TLI.getTypeToTransformTo(N->getValueType(0))); 54769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 54869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 549475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_VAARG(SDNode *N) { 550475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = N->getOperand(0); // Get the chain. 551475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getOperand(1); // Get the pointer. 552bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 553786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 55469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 555d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands MVT RegVT = TLI.getRegisterType(VT); 556d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands unsigned NumRegs = TLI.getNumRegisters(VT); 557d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // The argument is passed as NumRegs registers of type RegVT. 558d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands 559d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands SmallVector<SDValue, 8> Parts(NumRegs); 560d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands for (unsigned i = 0; i < NumRegs; ++i) { 561c460ae90019ddb19d4c07b2cd2fbaecfa7adf67dDale Johannesen Parts[i] = DAG.getVAArg(RegVT, dl, Chain, Ptr, N->getOperand(2)); 562d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands Chain = Parts[i].getValue(1); 563d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands } 56469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 565d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Handle endianness of the load. 566d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands if (TLI.isBigEndian()) 567d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands std::reverse(Parts.begin(), Parts.end()); 56869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 569d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Assemble the parts in the promoted type. 570d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 571786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Res = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Parts[0]); 572d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands for (unsigned i = 1; i < NumRegs; ++i) { 573786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Part = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Parts[i]); 574d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Shift it to the right position and "or" it in. 575786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Part = DAG.getNode(ISD::SHL, dl, NVT, Part, 576d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands DAG.getConstant(i * RegVT.getSizeInBits(), 57792abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 578786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Res = DAG.getNode(ISD::OR, dl, NVT, Res, Part); 579d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands } 58069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 581d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands // Modified the chain result - switch anything that used the old chain to 582bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 583d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands ReplaceValueWith(SDValue(N, 1), Chain); 584d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands 585d821726a91000c1b2de7ca8aafdc27b1a311741bDuncan Sands return Res; 58669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 58769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 588ab0c578bfd1380326830180a9209df6c5be58887Duncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_XMULO(SDNode *N, unsigned ResNo) { 589ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands assert(ResNo == 1 && "Only boolean result promotion currently supported!"); 590ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands return PromoteIntRes_Overflow(N); 591ab0c578bfd1380326830180a9209df6c5be58887Duncan Sands} 5927fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 593bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 594bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands// Integer Operand Promotion 595bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 5967fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 597bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// PromoteIntegerOperand - This method is called when the specified operand of 598bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// the specified node is found to need promotion. At this point, all of the 599bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// result types of the node are known to be legal, but other operands of the 600bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// node may need promotion or expansion as well as the specified one. 601bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sandsbool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) { 602fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman DEBUG(errs() << "Promote integer operand: "; N->dump(&DAG); errs() << "\n"); 603475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 6047fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 605f43071beddb7ed5b2fd7d2f06c4130460616a13dDuncan Sands if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) 606bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta return false; 60769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 608bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta switch (N->getOpcode()) { 609bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta default: 610bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #ifndef NDEBUG 611fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman errs() << "PromoteIntegerOperand Op #" << OpNo << ": "; 612fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman N->dump(&DAG); errs() << "\n"; 613bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #endif 614c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to promote this operator's operand!"); 615bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 616bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::ANY_EXTEND: Res = PromoteIntOp_ANY_EXTEND(N); break; 61727759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman case ISD::BIT_CONVERT: Res = PromoteIntOp_BIT_CONVERT(N); break; 618bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BR_CC: Res = PromoteIntOp_BR_CC(N, OpNo); break; 619bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BRCOND: Res = PromoteIntOp_BRCOND(N, OpNo); break; 620bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BUILD_PAIR: Res = PromoteIntOp_BUILD_PAIR(N); break; 621bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BUILD_VECTOR: Res = PromoteIntOp_BUILD_VECTOR(N); break; 622bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::CONVERT_RNDSAT: 623bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta Res = PromoteIntOp_CONVERT_RNDSAT(N); break; 624bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::INSERT_VECTOR_ELT: 625bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta Res = PromoteIntOp_INSERT_VECTOR_ELT(N, OpNo);break; 626bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::MEMBARRIER: Res = PromoteIntOp_MEMBARRIER(N); break; 627aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang case ISD::SCALAR_TO_VECTOR: 628aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang Res = PromoteIntOp_SCALAR_TO_VECTOR(N); break; 629bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SELECT: Res = PromoteIntOp_SELECT(N, OpNo); break; 630bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SELECT_CC: Res = PromoteIntOp_SELECT_CC(N, OpNo); break; 631bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SETCC: Res = PromoteIntOp_SETCC(N, OpNo); break; 632bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SIGN_EXTEND: Res = PromoteIntOp_SIGN_EXTEND(N); break; 633bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SINT_TO_FP: Res = PromoteIntOp_SINT_TO_FP(N); break; 634bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::STORE: Res = PromoteIntOp_STORE(cast<StoreSDNode>(N), 635bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta OpNo); break; 636bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::TRUNCATE: Res = PromoteIntOp_TRUNCATE(N); break; 637bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::UINT_TO_FP: Res = PromoteIntOp_UINT_TO_FP(N); break; 638bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::ZERO_EXTEND: Res = PromoteIntOp_ZERO_EXTEND(N); break; 63955467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 64055467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SHL: 64155467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRA: 64255467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRL: 64355467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::ROTL: 64455467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::ROTR: Res = PromoteIntOp_Shift(N); break; 645bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta } 6469fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands 647bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is null, the sub-method took care of registering results etc. 6489fbc7e2e7a765298fb4326885b407e0962f7ab62Duncan Sands if (!Res.getNode()) return false; 64947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 65047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // If the result is N, the sub-method updated N in place. Tell the legalizer 65147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // core about this. 65247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands if (Res.getNode() == N) 653bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return true; 654bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 655bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 656bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Invalid operand expansion"); 657bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 658475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 659bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return false; 66069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 66169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 66269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// PromoteSetCCOperands - Promote the operands of a comparison. This code is 66369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// shared among BR_CC, SELECT_CC, and SETCC handlers. 664475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::PromoteSetCCOperands(SDValue &NewLHS,SDValue &NewRHS, 66569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands ISD::CondCode CCCode) { 666cff50d9e20d7bbc3acf4845fe826bfb3095126c4Duncan Sands // We have to insert explicit sign or zero extends. Note that we could 667cff50d9e20d7bbc3acf4845fe826bfb3095126c4Duncan Sands // insert sign extends for ALL conditions, but zero extend is cheaper on 668cff50d9e20d7bbc3acf4845fe826bfb3095126c4Duncan Sands // many machines (an AND instead of two shifts), so prefer it. 66969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (CCCode) { 670c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown integer comparison!"); 67169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETEQ: 67269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETNE: 67369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGE: 67469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGT: 67569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULE: 67669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULT: 67769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // ALL of these operations will work if we either sign or zero extend 67869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the operands (including the unsigned comparisons!). Zero extend is 67969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // usually a simpler/cheaper operation, so prefer it. 680c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewLHS = ZExtPromotedInteger(NewLHS); 681c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewRHS = ZExtPromotedInteger(NewRHS); 68211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 68369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGE: 68469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGT: 68569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLT: 68669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLE: 687c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewLHS = SExtPromotedInteger(NewLHS); 688c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands NewRHS = SExtPromotedInteger(NewRHS); 68911ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 69069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 69169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 69269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 693475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ANY_EXTEND(SDNode *N) { 694475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 695786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), N->getValueType(0), Op); 696bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 69769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 69827759f41ca1c930e2860275c9ba2567a5890d7d2Eli FriedmanSDValue DAGTypeLegalizer::PromoteIntOp_BIT_CONVERT(SDNode *N) { 69927759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman // This should only occur in unusual situations like bitcasting to an 70027759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman // x86_fp80, so just turn it into a store+load 70127759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman return CreateStackStoreLoad(N->getOperand(0), N->getValueType(0)); 70227759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman} 70327759f41ca1c930e2860275c9ba2567a5890d7d2Eli Friedman 704475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo) { 705bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 2 && "Don't know how to promote this operand!"); 70669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 707475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(2); 708475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(3); 709bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(1))->get()); 71069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 711bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0), CC (#1) and basic block destination (Op#4) are always 712bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal types. 713475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 714bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 715bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 716bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 717475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo) { 718bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 1 && "only know how to promote condition"); 719bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 720b6e223a9e806921183da972253c49082a2e07944Duncan Sands // Promote all the way up to the canonical SetCC type. 7215480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands MVT SVT = TLI.getSetCCResultType(MVT::Other); 722b6e223a9e806921183da972253c49082a2e07944Duncan Sands SDValue Cond = PromoteTargetBoolean(N->getOperand(1), SVT); 723bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 724bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0) and basic block destination (Op#2) are always legal types. 725475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Cond, 726bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(2)); 727bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 728bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 729475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_PAIR(SDNode *N) { 730bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Since the result type is legal, the operands must promote to it. 731bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT OVT = N->getOperand(0).getValueType(); 732c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Lo = ZExtPromotedInteger(N->getOperand(0)); 733475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = GetPromotedInteger(N->getOperand(1)); 734bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Lo.getValueType() == N->getValueType(0) && "Operand over promoted?"); 735786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 736bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 737786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SHL, dl, N->getValueType(0), Hi, 73892abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(OVT.getSizeInBits(), TLI.getPointerTy())); 739786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::OR, dl, N->getValueType(0), Lo, Hi); 74069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 74169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 742475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_VECTOR(SDNode *N) { 74369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The vector type is legal but the element type is not. This implies 74469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that the vector is a power-of-two in length and that the element 74569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // type does not have a strange size (eg: it is not i1). 74669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VecVT = N->getValueType(0); 74769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands unsigned NumElts = VecVT.getVectorNumElements(); 74869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!(NumElts & 1) && "Legal vector of one illegal element?"); 74969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 750b1303d05a89972195de023fda432cc621375a27cBob Wilson // Promote the inserted value. The type does not need to match the 751b1303d05a89972195de023fda432cc621375a27cBob Wilson // vector element type. Check that any extra bits introduced will be 752b1303d05a89972195de023fda432cc621375a27cBob Wilson // truncated away. 753b1303d05a89972195de023fda432cc621375a27cBob Wilson assert(N->getOperand(0).getValueType().getSizeInBits() >= 754b1303d05a89972195de023fda432cc621375a27cBob Wilson N->getValueType(0).getVectorElementType().getSizeInBits() && 755b1303d05a89972195de023fda432cc621375a27cBob Wilson "Type of inserted value narrower than vector element type!"); 75669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 757b1303d05a89972195de023fda432cc621375a27cBob Wilson SmallVector<SDValue, 16> NewOps; 758c885165e664f3b465403e1b6ce57ba63f57c5f0cBob Wilson for (unsigned i = 0; i < NumElts; ++i) 759b1303d05a89972195de023fda432cc621375a27cBob Wilson NewOps.push_back(GetPromotedInteger(N->getOperand(i))); 76069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 761b1303d05a89972195de023fda432cc621375a27cBob Wilson return DAG.UpdateNodeOperands(SDValue(N, 0), &NewOps[0], NumElts); 76269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 76369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 76428088d3c049017a131aa7b07201c6e19c0227cefMon P WangSDValue DAGTypeLegalizer::PromoteIntOp_CONVERT_RNDSAT(SDNode *N) { 76528088d3c049017a131aa7b07201c6e19c0227cefMon P Wang ISD::CvtCode CvtCode = cast<CvtRndSatSDNode>(N)->getCvtCode(); 76628088d3c049017a131aa7b07201c6e19c0227cefMon P Wang assert ((CvtCode == ISD::CVT_SS || CvtCode == ISD::CVT_SU || 76728088d3c049017a131aa7b07201c6e19c0227cefMon P Wang CvtCode == ISD::CVT_US || CvtCode == ISD::CVT_UU || 76828088d3c049017a131aa7b07201c6e19c0227cefMon P Wang CvtCode == ISD::CVT_FS || CvtCode == ISD::CVT_FU) && 76928088d3c049017a131aa7b07201c6e19c0227cefMon P Wang "can only promote integer arguments"); 77028088d3c049017a131aa7b07201c6e19c0227cefMon P Wang SDValue InOp = GetPromotedInteger(N->getOperand(0)); 771c460ae90019ddb19d4c07b2cd2fbaecfa7adf67dDale Johannesen return DAG.getConvertRndSat(N->getValueType(0), N->getDebugLoc(), InOp, 77228088d3c049017a131aa7b07201c6e19c0227cefMon P Wang N->getOperand(1), N->getOperand(2), 77328088d3c049017a131aa7b07201c6e19c0227cefMon P Wang N->getOperand(3), N->getOperand(4), CvtCode); 77428088d3c049017a131aa7b07201c6e19c0227cefMon P Wang} 77528088d3c049017a131aa7b07201c6e19c0227cefMon P Wang 776475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, 777475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned OpNo) { 77869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OpNo == 1) { 77969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the inserted value. This is valid because the type does not 78069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // have to match the vector element type. 78169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 78269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Check that any extra bits introduced will be truncated away. 78369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(N->getOperand(1).getValueType().getSizeInBits() >= 78469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getValueType(0).getVectorElementType().getSizeInBits() && 78569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands "Type of inserted value narrower than vector element type!"); 786475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 78769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetPromotedInteger(N->getOperand(1)), 78869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(2)); 78969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 79069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 79169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OpNo == 2 && "Different operand and result vector types?"); 79269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 79369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the index. 794c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SDValue Idx = ZExtPromotedInteger(N->getOperand(2)); 795475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 79669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(1), Idx); 79769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 79869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 799475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_MEMBARRIER(SDNode *N) { 800475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewOps[6]; 8014be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen DebugLoc dl = N->getDebugLoc(); 80269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[0] = N->getOperand(0); 80369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 1; i < array_lengthof(NewOps); ++i) { 804475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag = GetPromotedInteger(N->getOperand(i)); 8054be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen NewOps[i] = DAG.getZeroExtendInReg(Flag, dl, MVT::i1); 80669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 807475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue (N, 0), NewOps, 80869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands array_lengthof(NewOps)); 80969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 81069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 811aa9df0b0c3cef33514095bde2eedead986677955Mon P WangSDValue DAGTypeLegalizer::PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N) { 812b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands // Integer SCALAR_TO_VECTOR operands are implicitly truncated, so just promote 813b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands // the operand in place. 814b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), 815b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands GetPromotedInteger(N->getOperand(0))); 816aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang} 817aa9df0b0c3cef33514095bde2eedead986677955Mon P Wang 818475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT(SDNode *N, unsigned OpNo) { 819bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Only know how to promote condition"); 8207e4982287591945c4e42ba8470a978e629789c76Duncan Sands 821b6e223a9e806921183da972253c49082a2e07944Duncan Sands // Promote all the way up to the canonical SetCC type. 8225480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands MVT SVT = TLI.getSetCCResultType(N->getOperand(1).getValueType()); 823b6e223a9e806921183da972253c49082a2e07944Duncan Sands SDValue Cond = PromoteTargetBoolean(N->getOperand(0), SVT); 824bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 8257e4982287591945c4e42ba8470a978e629789c76Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), Cond, 8267e4982287591945c4e42ba8470a978e629789c76Duncan Sands N->getOperand(1), N->getOperand(2)); 827bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 828bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 829475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo) { 830bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 831bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 832475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 833475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 834bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(4))->get()); 835bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 836bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#4) and the possible return values (#2 and #3) have legal types. 837475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2), 838bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(3), N->getOperand(4)); 839bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 840bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 841475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SETCC(SDNode *N, unsigned OpNo) { 842bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 843bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 844475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 845475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 846bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(2))->get()); 847bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 848bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#2) is always legal. 849475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2)); 850bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 851bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 85255467af31620c9d027e071ebcd9746b7593cff17Sanjiv GuptaSDValue DAGTypeLegalizer::PromoteIntOp_Shift(SDNode *N) { 85355467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 85455467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta ZExtPromotedInteger(N->getOperand(1))); 85555467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta} 85655467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 857475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SIGN_EXTEND(SDNode *N) { 858475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 859786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 860786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Op = DAG.getNode(ISD::ANY_EXTEND, dl, N->getValueType(0), Op); 861786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), 862bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op, DAG.getValueType(N->getOperand(0).getValueType())); 863bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 864bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 865c08468774b65dc288c44076d428f4beddabe58e2Duncan SandsSDValue DAGTypeLegalizer::PromoteIntOp_SINT_TO_FP(SDNode *N) { 866c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), 867c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands SExtPromotedInteger(N->getOperand(0))); 868c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands} 869c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands 870475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo){ 871bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 872475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(), Ptr = N->getBasePtr(); 873bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands int SVOffset = N->getSrcValueOffset(); 874bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Alignment = N->getAlignment(); 875bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands bool isVolatile = N->isVolatile(); 876786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 877bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 878475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = GetPromotedInteger(N->getValue()); // Get promoted value. 879bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 880bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate the value and store the result. 881786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getTruncStore(Ch, dl, Val, Ptr, N->getSrcValue(), 882bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands SVOffset, N->getMemoryVT(), 883bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands isVolatile, Alignment); 884bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 885bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 886475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_TRUNCATE(SDNode *N) { 887475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 888786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), N->getValueType(0), Op); 889bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 890bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 891c08468774b65dc288c44076d428f4beddabe58e2Duncan SandsSDValue DAGTypeLegalizer::PromoteIntOp_UINT_TO_FP(SDNode *N) { 892c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), 893c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands ZExtPromotedInteger(N->getOperand(0))); 894c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands} 895c08468774b65dc288c44076d428f4beddabe58e2Duncan Sands 896475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ZERO_EXTEND(SDNode *N) { 8974be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen DebugLoc dl = N->getDebugLoc(); 898475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 8994be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen Op = DAG.getNode(ISD::ANY_EXTEND, dl, N->getValueType(0), Op); 9004be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen return DAG.getZeroExtendInReg(Op, dl, N->getOperand(0).getValueType()); 901bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 902bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 90369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 90469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 90569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Result Expansion 90669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 90769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 90869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// ExpandIntegerResult - This method is called when the specified result of the 909cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// specified node is found to need expansion. At this point, the node may also 910cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// have invalid operands or may have other results that need promotion, we just 911cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// know that (at least) one result needs expansion. 91269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) { 913fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman DEBUG(errs() << "Expand integer result: "; N->dump(&DAG); errs() << "\n"); 914475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 915475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Lo = Hi = SDValue(); 916cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 917cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // See if the target wants to custom expand this node. 918f43071beddb7ed5b2fd7d2f06c4130460616a13dDuncan Sands if (CustomLowerNode(N, N->getValueType(ResNo), true)) 9191607f05cb7d77d01ce521a30232faa389dbed4e2Duncan Sands return; 920cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 921cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (N->getOpcode()) { 922cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: 923cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#ifndef NDEBUG 924fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman errs() << "ExpandIntegerResult #" << ResNo << ": "; 925fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman N->dump(&DAG); errs() << "\n"; 926cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#endif 927c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to expand the result of this operator!"); 92869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 92978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break; 93078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 93178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 93278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 93378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 93478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break; 93578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 9364a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 93778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 93821c2972f7d24680f6475877a3398b7f8cf515b33Duncan Sands case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break; 93978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 94069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ANY_EXTEND: ExpandIntRes_ANY_EXTEND(N, Lo, Hi); break; 94195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands case ISD::AssertSext: ExpandIntRes_AssertSext(N, Lo, Hi); break; 94269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AssertZext: ExpandIntRes_AssertZext(N, Lo, Hi); break; 94305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BSWAP: ExpandIntRes_BSWAP(N, Lo, Hi); break; 94405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::Constant: ExpandIntRes_Constant(N, Lo, Hi); break; 94505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTLZ: ExpandIntRes_CTLZ(N, Lo, Hi); break; 94605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTPOP: ExpandIntRes_CTPOP(N, Lo, Hi); break; 94705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTTZ: ExpandIntRes_CTTZ(N, Lo, Hi); break; 94869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_SINT: ExpandIntRes_FP_TO_SINT(N, Lo, Hi); break; 94969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_UINT: ExpandIntRes_FP_TO_UINT(N, Lo, Hi); break; 95069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::LOAD: ExpandIntRes_LOAD(cast<LoadSDNode>(N), Lo, Hi); break; 95105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::MUL: ExpandIntRes_MUL(N, Lo, Hi); break; 95205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SDIV: ExpandIntRes_SDIV(N, Lo, Hi); break; 95305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND: ExpandIntRes_SIGN_EXTEND(N, Lo, Hi); break; 95405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND_INREG: ExpandIntRes_SIGN_EXTEND_INREG(N, Lo, Hi); break; 95505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SREM: ExpandIntRes_SREM(N, Lo, Hi); break; 95605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: ExpandIntRes_TRUNCATE(N, Lo, Hi); break; 95705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UDIV: ExpandIntRes_UDIV(N, Lo, Hi); break; 95805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UREM: ExpandIntRes_UREM(N, Lo, Hi); break; 95905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::ZERO_EXTEND: ExpandIntRes_ZERO_EXTEND(N, Lo, Hi); break; 96069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 961cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::AND: 962cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::OR: 96305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::XOR: ExpandIntRes_Logical(N, Lo, Hi); break; 96405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 965cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADD: 96605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUB: ExpandIntRes_ADDSUB(N, Lo, Hi); break; 96705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 968cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDC: 96905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBC: ExpandIntRes_ADDSUBC(N, Lo, Hi); break; 97005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 971cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDE: 97205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBE: ExpandIntRes_ADDSUBE(N, Lo, Hi); break; 97305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 974cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SHL: 975cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SRA: 97605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: ExpandIntRes_Shift(N, Lo, Hi); break; 977cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 978d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 979cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If Lo/Hi is null, the sub-method took care of registering results etc. 980ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Lo.getNode()) 981475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SetExpandedInteger(SDValue(N, ResNo), Lo, Hi); 982cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 983cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 98405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftByConstant - N is a shift by a value that needs to be expanded, 98505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// and the shift amount is a constant 'Amt'. Expand the operation. 98605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandShiftByConstant(SDNode *N, unsigned Amt, 987475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 988786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 98905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the incoming operand to be shifted, so that we have its parts 990475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 99105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 992cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 99305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = InL.getValueType(); 99405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned VTBits = N->getValueType(0).getSizeInBits(); 99505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 99605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = N->getOperand(1).getValueType(); 997cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 99805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SHL) { 99905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 100005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = Hi = DAG.getConstant(0, NVT); 100105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 100205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 10037fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands Hi = DAG.getNode(ISD::SHL, dl, 1004786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NVT, InL, DAG.getConstant(Amt-NVTBits,ShTy)); 100505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 100605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 100705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = InL; 1008104de6cf7b80ec5e9beb502a069f376810a0a1e3Richard Osborne } else if (Amt == 1 && 1009f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::ADDC, 1010f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.getTypeToExpandTo(NVT))) { 101105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Emit this X << 1 as X+X. 1012874ae251c317788391f9c3f113957802d390a063Dale Johannesen SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 1013475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { InL, InL }; 1014786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADDC, dl, VTList, LoOps, 2); 1015475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { InH, InH, Lo.getValue(1) }; 1016786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADDE, dl, VTList, HiOps, 3); 101705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1018786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SHL, dl, NVT, InL, DAG.getConstant(Amt, ShTy)); 1019786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::OR, dl, NVT, 1020786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, InH, 102105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 1022786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, InL, 102305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 102405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 102505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 1026cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1027cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 102805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SRL) { 102905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 103005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 103105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 103205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 10337fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands Lo = DAG.getNode(ISD::SRL, dl, 1034786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NVT, InH, DAG.getConstant(Amt-NVTBits,ShTy)); 103505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 103605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 103705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 103805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 103905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1040786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::OR, dl, NVT, 1041786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, InL, 104205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 1043786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, InH, 104405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 1045786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRL, dl, NVT, InH, DAG.getConstant(Amt, ShTy)); 104605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 104705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 1048cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1049d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 105005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 105105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 1052786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = Lo = DAG.getNode(ISD::SRA, dl, NVT, InH, 105305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 105405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 1055786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SRA, dl, NVT, InH, 105605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt-NVTBits, ShTy)); 1057786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, 105805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 105905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 106005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 1061786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, 106205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 1063d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } else { 1064de06470330260f5937e7ca558f5f5b3e171f2ee5Dale Johannesen Lo = DAG.getNode(ISD::OR, dl, NVT, 1065786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, InL, 106605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 1067786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, InH, 106805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 1069786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, DAG.getConstant(Amt, ShTy)); 1070d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } 1071d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands} 1072d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 107305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftWithKnownAmountBit - Try to determine whether we can simplify 107405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// this shift based on knowledge of the high bit of the shift amount. If we 107505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// can tell this, we know that it is >= 32 or < 32, without knowing the actual 107605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// shift amount. 107705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer:: 1078475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi) { 1079475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt = N->getOperand(1); 108083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 108105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = Amt.getValueType(); 108205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ShBits = ShTy.getSizeInBits(); 108305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 108405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(isPowerOf2_32(NVTBits) && 108505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Expanded integer type size not a power of two!"); 1086786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1087cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 108805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt HighBitMask = APInt::getHighBitsSet(ShBits, ShBits - Log2_32(NVTBits)); 108905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt KnownZero, KnownOne; 109005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.ComputeMaskedBits(N->getOperand(1), HighBitMask, KnownZero, KnownOne); 1091cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 109205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we don't know anything about the high bits, exit. 109305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (((KnownZero|KnownOne) & HighBitMask) == 0) 109405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 1095cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 109605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get the incoming operand to be shifted. 1097475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 109805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 1099be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 110005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that any of the high bits of the shift amount are one, then we 110105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 110205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (KnownOne.intersects(HighBitMask)) { 110305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mask out the high bit, which we know is set. 1104786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Amt = DAG.getNode(ISD::AND, dl, ShTy, Amt, 110505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(~HighBitMask, ShTy)); 110605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 110705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 1108c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown shift"); 110905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: 111005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); // Low part is zero. 1111786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SHL, dl, NVT, InL, Amt); // High part from Lo part. 111205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 111305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 111405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // Hi part is zero. 1115786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SRL, dl, NVT, InH, Amt); // Lo part from Hi part. 111605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 111705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: 1118786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, InH, // Sign extend high part. 111905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 1120786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SRA, dl, NVT, InH, Amt); // Lo part from Hi part. 112105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 112205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 112305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 112405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 112528dc98f7521933872b93156e3ebf5c9f8327b2b3Eli Friedman#if 0 112628dc98f7521933872b93156e3ebf5c9f8327b2b3Eli Friedman // FIXME: This code is broken for shifts with a zero amount! 112705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that all of the high bits of the shift amount are zero, then we 112805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 112905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if ((KnownZero & HighBitMask) == HighBitMask) { 113005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Compute 32-amt. 1131475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt2 = DAG.getNode(ISD::SUB, ShTy, 113205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits, ShTy), 113305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt); 113405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned Op1, Op2; 113505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 1136c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown shift"); 113705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: Op1 = ISD::SHL; Op2 = ISD::SRL; break; 113805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 113905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: Op1 = ISD::SRL; Op2 = ISD::SHL; break; 114005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 114105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 114205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), NVT, InL, Amt); 114305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 114405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op1, NVT, InH, Amt), 114505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op2, NVT, InL, Amt2)); 114605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 114705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 114828dc98f7521933872b93156e3ebf5c9f8327b2b3Eli Friedman#endif 114905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 115005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 115105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 115205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 11536fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng/// ExpandShiftWithUnknownAmountBit - Fully general expansion of integer shift 11546fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng/// of any size. 11556fb2168aaed06e4685d064b6f63dc4c668b42728Evan Chengbool DAGTypeLegalizer:: 11566fb2168aaed06e4685d064b6f63dc4c668b42728Evan ChengExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi) { 11576fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue Amt = N->getOperand(1); 11586fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 11596fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng MVT ShTy = Amt.getValueType(); 11606fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng unsigned NVTBits = NVT.getSizeInBits(); 11616fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng assert(isPowerOf2_32(NVTBits) && 11626fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng "Expanded integer type size not a power of two!"); 11636fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DebugLoc dl = N->getDebugLoc(); 11646fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11656fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // Get the incoming operand to be shifted. 11666fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue InL, InH; 11676fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng GetExpandedInteger(N->getOperand(0), InL, InH); 11686fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11696fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue NVBitsNode = DAG.getConstant(NVTBits, ShTy); 11706fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue Amt2 = DAG.getNode(ISD::SUB, dl, ShTy, NVBitsNode, Amt); 11716fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue Cmp = DAG.getSetCC(dl, TLI.getSetCCResultType(ShTy), 11726fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Amt, NVBitsNode, ISD::SETULT); 11736fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11746fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue Lo1, Hi1, Lo2, Hi2; 11756fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng switch (N->getOpcode()) { 1176c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown shift"); 11776fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng case ISD::SHL: 11786fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // ShAmt < NVTBits 11796fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo1 = DAG.getConstant(0, NVT); // Low part is zero. 11806fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi1 = DAG.getNode(ISD::SHL, dl, NVT, InL, Amt); // High part from Lo part. 11816fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11826fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // ShAmt >= NVTBits 11836fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo2 = DAG.getNode(ISD::SHL, dl, NVT, InL, Amt); 11846fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi2 = DAG.getNode(ISD::OR, dl, NVT, 11856fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SHL, dl, NVT, InH, Amt), 11866fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SRL, dl, NVT, InL, Amt2)); 11876fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11886fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, Lo1, Lo2); 11896fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, Hi1, Hi2); 11906fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return true; 11916fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng case ISD::SRL: 11926fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // ShAmt < NVTBits 11936fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi1 = DAG.getConstant(0, NVT); // Hi part is zero. 11946fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo1 = DAG.getNode(ISD::SRL, dl, NVT, InH, Amt); // Lo part from Hi part. 11956fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 11966fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // ShAmt >= NVTBits 11976fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi2 = DAG.getNode(ISD::SRL, dl, NVT, InH, Amt); 11986fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo2 = DAG.getNode(ISD::OR, dl, NVT, 11996fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SRL, dl, NVT, InL, Amt), 12006fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SHL, dl, NVT, InH, Amt2)); 12016fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 12026fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, Lo1, Lo2); 12036fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, Hi1, Hi2); 12046fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return true; 12056fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng case ISD::SRA: 12066fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // ShAmt < NVTBits 12076fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi1 = DAG.getNode(ISD::SRA, dl, NVT, InH, // Sign extend high part. 12086fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getConstant(NVTBits-1, ShTy)); 12096fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo1 = DAG.getNode(ISD::SRA, dl, NVT, InH, Amt); // Lo part from Hi part. 12106fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 12116fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng // ShAmt >= NVTBits 12126fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi2 = DAG.getNode(ISD::SRA, dl, NVT, InH, Amt); 12136fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo2 = DAG.getNode(ISD::OR, dl, NVT, 12146fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SRL, dl, NVT, InL, Amt), 12156fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng DAG.getNode(ISD::SHL, dl, NVT, InH, Amt2)); 12166fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 12176fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Lo = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, Lo1, Lo2); 12186fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng Hi = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, Hi1, Hi2); 12196fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return true; 12206fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng } 12216fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 12226fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return false; 12236fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng} 12246fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng 122505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUB(SDNode *N, 1226475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1227786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 122805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1229475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 123005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 123105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 123229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands 123329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands MVT NVT = LHSL.getValueType(); 1234475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1235475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 123605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 123729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // Do not generate ADDC/ADDE or SUBC/SUBE if the target does not support 123829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // them. TODO: Teach operation legalization how to expand unsupported 123929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // ADDC/ADDE/SUBC/SUBE. The problem is that these operations generate 124029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // a carry of type MVT::Flag, but there doesn't seem to be any way to 124129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // generate a value of this type in the expanded code sequence. 124229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands bool hasCarry = 1243f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(N->getOpcode() == ISD::ADD ? 1244f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman ISD::ADDC : ISD::SUBC, 1245f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.getTypeToExpandTo(NVT)); 124629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands 124729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (hasCarry) { 1248874ae251c317788391f9c3f113957802d390a063Dale Johannesen SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 124929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (N->getOpcode() == ISD::ADD) { 1250786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADDC, dl, VTList, LoOps, 2); 125129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands HiOps[2] = Lo.getValue(1); 1252786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADDE, dl, VTList, HiOps, 3); 125329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } else { 1254786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SUBC, dl, VTList, LoOps, 2); 125529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands HiOps[2] = Lo.getValue(1); 1256786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUBE, dl, VTList, HiOps, 3); 125729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } 125805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 125929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (N->getOpcode() == ISD::ADD) { 1260786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADD, dl, NVT, LoOps, 2); 1261786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, HiOps, 2); 1262786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Cmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Lo, LoOps[0], 126329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands ISD::SETULT); 1264786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Carry1 = DAG.getNode(ISD::SELECT, dl, NVT, Cmp1, 126529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), 126629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(0, NVT)); 1267786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Cmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Lo, LoOps[1], 126829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands ISD::SETULT); 1269786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Carry2 = DAG.getNode(ISD::SELECT, dl, NVT, Cmp2, 127029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), Carry1); 1271786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, Carry2); 127229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } else { 1273786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SUB, dl, NVT, LoOps, 2); 1274786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUB, dl, NVT, HiOps, 2); 12755480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands SDValue Cmp = 1276f8d3ec2c5725a2010f11de4ba78f6127712a5fe7Dale Johannesen DAG.getSetCC(dl, TLI.getSetCCResultType(LoOps[0].getValueType()), 12775480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LoOps[0], LoOps[1], ISD::SETULT); 1278786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Borrow = DAG.getNode(ISD::SELECT, dl, NVT, Cmp, 127929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), 128029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(0, NVT)); 1281786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUB, dl, NVT, Hi, Borrow); 128229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } 128305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 128405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 128505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 128605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBC(SDNode *N, 1287475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 128805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1289475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 1290786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 129105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 129205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 1293874ae251c317788391f9c3f113957802d390a063Dale Johannesen SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1294475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1295475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 129605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 129705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::ADDC) { 1298786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ADDC, dl, VTList, LoOps, 2); 129905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 1300786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADDE, dl, VTList, HiOps, 3); 130105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1302786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SUBC, dl, VTList, LoOps, 2); 130305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 1304786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SUBE, dl, VTList, HiOps, 3); 130505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 130605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1307874ae251c317788391f9c3f113957802d390a063Dale Johannesen // Legalized the flag result - switch anything that used the old flag to 1308874ae251c317788391f9c3f113957802d390a063Dale Johannesen // use the new one. 1309475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 131005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 131105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 131205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBE(SDNode *N, 1313475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 131405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1315475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 1316786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 131705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 131805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 1319874ae251c317788391f9c3f113957802d390a063Dale Johannesen SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1320475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[3] = { LHSL, RHSL, N->getOperand(2) }; 1321475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 132205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1323786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(N->getOpcode(), dl, VTList, LoOps, 3); 132405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 1325786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(N->getOpcode(), dl, VTList, HiOps, 3); 132605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1327874ae251c317788391f9c3f113957802d390a063Dale Johannesen // Legalized the flag result - switch anything that used the old flag to 1328874ae251c317788391f9c3f113957802d390a063Dale Johannesen // use the new one. 1329475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 133005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 133105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 133205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ANY_EXTEND(SDNode *N, 1333475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 133405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1335786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1336475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 133705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 133805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is any extension of the input (which degenerates to a copy). 1339786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ANY_EXTEND, dl, NVT, Op); 1340e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Hi = DAG.getUNDEF(NVT); // The high part is undefined. 134105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 134205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 134305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 134405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 134505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1346475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 134705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 134805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 134905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 135005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 135105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 135205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 135305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 135495db39a9de48f69f4d764335b492b83a698c7854Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertSext(SDNode *N, 1355475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1356786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 135795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 135895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT NVT = Lo.getValueType(); 135995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 136095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned NVTBits = NVT.getSizeInBits(); 136195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned EVTBits = EVT.getSizeInBits(); 136295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 136395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands if (NVTBits < EVTBits) { 1364786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::AssertSext, dl, NVT, Hi, 136595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 136695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } else { 1367786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::AssertSext, dl, NVT, Lo, DAG.getValueType(EVT)); 136895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // The high part replicates the sign bit of Lo, make it explicit. 1369786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, Lo, 137092abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(NVTBits-1, TLI.getPointerTy())); 137195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } 137295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 137395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 137405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertZext(SDNode *N, 1375475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1376786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 137705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 137805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 137905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 138005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 138105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned EVTBits = EVT.getSizeInBits(); 138205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 138305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (NVTBits < EVTBits) { 1384786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::AssertZext, dl, NVT, Hi, 138505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 138605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 1387786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::AssertZext, dl, NVT, Lo, DAG.getValueType(EVT)); 138805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part must be zero, make it explicit. 138905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 139005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 139105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 139205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 139305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_BSWAP(SDNode *N, 1394475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1395786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 139605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Hi, Lo); // Note swapped operands. 1397786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::BSWAP, dl, Lo.getValueType(), Lo); 1398786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::BSWAP, dl, Hi.getValueType(), Hi); 139905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 140005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 140105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Constant(SDNode *N, 1402475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 140305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 140405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NBitWidth = NVT.getSizeInBits(); 140505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const APInt &Cst = cast<ConstantSDNode>(N)->getAPIntValue(); 140605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(APInt(Cst).trunc(NBitWidth), NVT); 140705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(Cst.lshr(NBitWidth).trunc(NBitWidth), NVT); 140805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 140905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 141005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTLZ(SDNode *N, 1411475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1412786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 141305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctlz (HiLo) -> Hi != 0 ? ctlz(Hi) : (ctlz(Lo)+32) 141405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 141505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 141605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1417786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue HiNotZero = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Hi, 1418ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 141905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1420786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue LoLZ = DAG.getNode(ISD::CTLZ, dl, NVT, Lo); 1421786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue HiLZ = DAG.getNode(ISD::CTLZ, dl, NVT, Hi); 142205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1423786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SELECT, dl, NVT, HiNotZero, HiLZ, 1424786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::ADD, dl, NVT, LoLZ, 142505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 142605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 142705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 142805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 142905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTPOP(SDNode *N, 1430475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1431786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 143205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctpop(HiLo) -> ctpop(Hi)+ctpop(Lo) 143305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 143405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 1435b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Lo = DAG.getNode(ISD::ADD, dl, NVT, DAG.getNode(ISD::CTPOP, dl, NVT, Lo), 1436786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::CTPOP, dl, NVT, Hi)); 143705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 143805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 143905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 144005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTTZ(SDNode *N, 1441475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1442786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 144305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // cttz (HiLo) -> Lo != 0 ? cttz(Lo) : (cttz(Hi)+32) 144405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 144505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 144605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1447786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue LoNotZero = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), Lo, 1448ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 144905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1450786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue LoLZ = DAG.getNode(ISD::CTTZ, dl, NVT, Lo); 1451786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue HiLZ = DAG.getNode(ISD::CTTZ, dl, NVT, Hi); 145205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1453786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SELECT, dl, NVT, LoNotZero, LoLZ, 1454786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::ADD, dl, NVT, HiLZ, 145505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 145605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 145705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 145805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1459475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_SINT(SDNode *N, SDValue &Lo, 1460475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 1461c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 146205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1463475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1464b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOSINT(Op.getValueType(), VT); 1465be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-sint conversion!"); 1466c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, &Op, 1, true/*irrelevant*/, dl), Lo, Hi); 1467ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1468ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 1469475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo, 1470475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 1471c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 147283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 1473475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1474b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOUINT(Op.getValueType(), VT); 1475be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-uint conversion!"); 1476c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, &Op, 1, false/*irrelevant*/, dl), Lo, Hi); 1477ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1478ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 147969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_LOAD(LoadSDNode *N, 1480475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1481ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalLoad(N)) { 1482ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands ExpandRes_NormalLoad(N, Lo, Hi); 148378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 148478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 148578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 148678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 148778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 148883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 148983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1490475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 1491475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 1492cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::LoadExtType ExtType = N->getExtensionType(); 1493cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 1494cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 1495cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 1496786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1497cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 149878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1499cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 150078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 150183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 1502cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1503786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getExtLoad(ExtType, dl, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 1504786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen EVT, isVolatile, Alignment); 1505cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1506cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Remember the chain. 1507cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = Lo.getValue(1); 1508cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1509cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExtType == ISD::SEXTLOAD) { 1510cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is obtained by SRA'ing all but one of the bits of the 1511cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // lo part. 151283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned LoSize = Lo.getValueType().getSizeInBits(); 1513786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, Lo, 151492abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(LoSize-1, TLI.getPointerTy())); 1515cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (ExtType == ISD::ZEXTLOAD) { 1516cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is just a zero. 1517cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getConstant(0, NVT); 1518cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1519cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(ExtType == ISD::EXTLOAD && "Unknown extload!"); 1520cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is undefined. 1521e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen Hi = DAG.getUNDEF(NVT); 1522cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1523cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 1524cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 1525786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getLoad(NVT, dl, Ch, Ptr, N->getSrcValue(), SVOffset, 1526cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1527cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1528cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 152983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 153083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 1531cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1532cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 153383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1534786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 15350bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1536786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getExtLoad(ExtType, dl, NVT, Ch, Ptr, N->getSrcValue(), 1537cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 1538cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1539cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1540cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1541cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1542786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1543cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1544cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1545cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned loads at 1546cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 154783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 154883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 154983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1550cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 1551cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1552cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load both the high bits and maybe some of the low bits. 1553786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getExtLoad(ExtType, dl, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 155483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits), 1555cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1556cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1557cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 1558786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 15590bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1560cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load the rest of the low bits. 1561786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, NVT, Ch, Ptr, N->getSrcValue(), 156283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SVOffset+IncrementSize, 156383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 1564cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1565cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1566cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1567cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1568786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1569cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1570cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 157183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 1572cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer low bits from the bottom of Hi to the top of Lo. 1573786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::OR, dl, NVT, Lo, 1574786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DAG.getNode(ISD::SHL, dl, NVT, Hi, 1575cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 157692abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy()))); 1577cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Move high bits to the right position in Hi. 15787fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands Hi = DAG.getNode(ExtType == ISD::SEXTLOAD ? ISD::SRA : ISD::SRL, dl, 1579786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NVT, Hi, 158083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 158192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 1582cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1583cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1584cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1585cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Legalized the chain result - switch anything that used the old chain to 1586cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // use the new one. 1587475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Ch); 1588cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1589cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 159069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Logical(SDNode *N, 1591475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1592786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1593475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 159469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 159569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 1596786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), LL, RL); 1597786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), LH, RH); 1598cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1599cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 160005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N, 1601475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 160205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 160305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1604c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 160569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1606f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, NVT); 1607f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, NVT); 1608f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, NVT); 1609f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, NVT); 1610cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU || HasMULHS || HasUMUL_LOHI || HasSMUL_LOHI) { 1611475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 161269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 161369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 161483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned OuterBitSize = VT.getSizeInBits(); 1615e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands unsigned InnerBitSize = NVT.getSizeInBits(); 1616cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned LHSSB = DAG.ComputeNumSignBits(N->getOperand(0)); 1617cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned RHSSB = DAG.ComputeNumSignBits(N->getOperand(1)); 161869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1619e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands APInt HighMask = APInt::getHighBitsSet(OuterBitSize, InnerBitSize); 1620e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (DAG.MaskedValueIsZero(N->getOperand(0), HighMask) && 1621e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands DAG.MaskedValueIsZero(N->getOperand(1), HighMask)) { 1622cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The inputs are both zero-extended. 1623cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1624cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a umul_lohi. 1625786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::UMUL_LOHI, dl, DAG.getVTList(NVT, NVT), LL, RL); 1626ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1627cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1628cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1629cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU) { 1630cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhu+mul. 1631786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::MUL, dl, NVT, LL, RL); 1632786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::MULHU, dl, NVT, LL, RL); 1633cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1634cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1635cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1636e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (LHSSB > InnerBitSize && RHSSB > InnerBitSize) { 1637cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The input values are both sign-extended. 1638cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasSMUL_LOHI) { 1639cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a smul_lohi. 1640786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SMUL_LOHI, dl, DAG.getVTList(NVT, NVT), LL, RL); 1641ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1642cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1643cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1644cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHS) { 1645cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhs+mul. 1646786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::MUL, dl, NVT, LL, RL); 1647786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::MULHS, dl, NVT, LL, RL); 1648cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1649cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1650cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1651cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1652cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Lo,Hi = umul LHS, RHS. 1653786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue UMulLOHI = DAG.getNode(ISD::UMUL_LOHI, dl, 1654cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getVTList(NVT, NVT), LL, RL); 1655cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = UMulLOHI; 1656cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = UMulLOHI.getValue(1); 1657786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen RH = DAG.getNode(ISD::MUL, dl, NVT, LL, RH); 1658786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LH = DAG.getNode(ISD::MUL, dl, NVT, LH, RL); 1659786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, RH); 1660786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, LH); 1661cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1662cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1663e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (HasMULHU) { 1664786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::MUL, dl, NVT, LL, RL); 1665786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::MULHU, dl, NVT, LL, RL); 1666786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen RH = DAG.getNode(ISD::MUL, dl, NVT, LL, RH); 1667786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LH = DAG.getNode(ISD::MUL, dl, NVT, LH, RL); 1668786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, RH); 1669786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::ADD, dl, NVT, Hi, LH); 1670e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands return; 1671e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands } 1672cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 167341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1674cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If nothing else, we can make a libcall. 16755ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 167615c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta if (VT == MVT::i16) 167715c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::MUL_I16; 167815c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta else if (VT == MVT::i32) 16795ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I32; 16805ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 1681e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LC = RTLIB::MUL_I64; 16825ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 16835ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I128; 16845ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported MUL!"); 1685e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands 1686475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1687c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, true/*irrelevant*/, dl), Lo, Hi); 168841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1689cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 169069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N, 1691475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 16925ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands MVT VT = N->getValueType(0); 1693c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 16945ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 16955ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1696a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta if (VT == MVT::i16) 1697a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::SDIV_I16; 1698a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta else if (VT == MVT::i32) 16995ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I32; 17005ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 17015ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I64; 17025ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 17035ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I128; 17045ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!"); 17055ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 1706475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1707c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, true, dl), Lo, Hi); 1708ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1709ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 171069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N, 1711475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 171283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 1713c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 171469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 171569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // If we can emit an efficient shift operation, do so now. Check to see if 1716cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the RHS is a constant. 1717cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N->getOperand(1))) 1718f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman return ExpandShiftByConstant(N, CN->getZExtValue(), Lo, Hi); 1719cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1720cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If we can determine that the high bit of the shift is zero or one, even if 1721cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the low bits are variable, emit this shift in an optimized form. 1722cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExpandShiftWithKnownAmountBit(N, Lo, Hi)) 1723cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 172469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1725cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this target supports shift_PARTS, use it. First, map to the _PARTS opc. 1726cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned PartsOpc; 172741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 1728cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SHL_PARTS; 172941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 1730cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRL_PARTS; 173141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 1732cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 1733cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRA_PARTS; 1734cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 173569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1736cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Next check to see if the target supports this SHL_PARTS operation or if it 1737cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // will custom expand it. 173883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1739cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::LegalizeAction Action = TLI.getOperationAction(PartsOpc, NVT); 1740cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if ((Action == TargetLowering::Legal && TLI.isTypeLegal(NVT)) || 1741cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Action == TargetLowering::Custom) { 1742cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Expand the subcomponents. 1743475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH; 174469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 174569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1746475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { LHSL, LHSH, N->getOperand(1) }; 174783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = LHSL.getValueType(); 1748fc1665793e62eb4f26d24b8a19eecf59cd872e2aDan Gohman Lo = DAG.getNode(PartsOpc, dl, DAG.getVTList(VT, VT), Ops, 3); 1749cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = Lo.getValue(1); 1750cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1751cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 175241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1753cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Otherwise, emit a libcall. 1754dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 175541edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands bool isSigned; 175641edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 175741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; /*sign irrelevant*/ 175815c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta if (VT == MVT::i16) 175915c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::SHL_I16; 176015c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta else if (VT == MVT::i32) 1761dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I32; 1762dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1763dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I64; 1764dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1765dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I128; 176641edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 176741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; 176815c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta if (VT == MVT::i16) 176915c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::SRL_I16; 177015c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta else if (VT == MVT::i32) 1771dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I32; 1772dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1773dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I64; 1774dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1775dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I128; 177641edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 177741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 177841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = true; 177915c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta if (VT == MVT::i16) 178015c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta LC = RTLIB::SRA_I16; 178115c94d08ab2be2e3d00de4edbfc7adde6545a7dbSanjiv Gupta else if (VT == MVT::i32) 1782dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I32; 1783dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1784dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I64; 1785dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1786dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I128; 178741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } 17888c899ee031481dbece5f111379a274c848cb5902Duncan Sands 17896fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng if (LC != RTLIB::UNKNOWN_LIBCALL && TLI.getLibcallName(LC)) { 17906fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 17916fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng SplitInteger(MakeLibCall(LC, VT, Ops, 2, isSigned, dl), Lo, Hi); 17926fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng return; 17936fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng } 179441edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 17956fb2168aaed06e4685d064b6f63dc4c668b42728Evan Cheng if (!ExpandShiftWithUnknownAmountBit(N, Lo, Hi)) 1796c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unsupported shift!"); 179741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1798cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 179905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SIGN_EXTEND(SDNode *N, 1800475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 180105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1802786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1803475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 180405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 1805b3bc6352defdf1a5c6b1b0770d0c4d603f6524a8Duncan Sands // The low part is sign extension of the input (degenerates to a copy). 1806786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SIGN_EXTEND, dl, NVT, N->getOperand(0)); 180705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part is obtained by SRA'ing all but one of the bits of low part. 180805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned LoSize = NVT.getSizeInBits(); 1809786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, NVT, Lo, 181092abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(LoSize-1, TLI.getPointerTy())); 181105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 181205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 181305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 181405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 181505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1816475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 181705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 181805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 181905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 182005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 182105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 182205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 1823786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Hi.getValueType(), Hi, 182405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 182505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 182605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 182705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 182805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer:: 1829475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandIntRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi) { 1830786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 183169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 183205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 1833d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 183405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (EVT.bitsLE(Lo.getValueType())) { 183505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the low part if needed. 1836786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Lo.getValueType(), Lo, 183705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(1)); 1838d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 183905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part gets the sign extension from the lo-part. This handles 184005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // things like sextinreg V:i64 from i8. 1841786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRA, dl, Hi.getValueType(), Lo, 184205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Hi.getValueType().getSizeInBits()-1, 184392abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 184405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 184505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. Leave the low part alone, 184605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the high part. 184705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 184805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands EVT.getSizeInBits() - Lo.getValueType().getSizeInBits(); 1849786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Hi.getValueType(), Hi, 185005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 185105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 185205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 1853d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 185405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N, 1855475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 185605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1857c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 185805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 185905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1860a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta if (VT == MVT::i16) 1861a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::SREM_I16; 1862a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta else if (VT == MVT::i32) 186305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I32; 186405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 186505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I64; 186605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 186705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I128; 186805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!"); 186905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1870475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1871c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, true, dl), Lo, Hi); 1872d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1873d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 187405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_TRUNCATE(SDNode *N, 1875475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 187605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1877786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1878786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::TRUNCATE, dl, NVT, N->getOperand(0)); 1879786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SRL, dl, 1880786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen N->getOperand(0).getValueType(), N->getOperand(0), 188192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands DAG.getConstant(NVT.getSizeInBits(), TLI.getPointerTy())); 1882786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::TRUNCATE, dl, NVT, Hi); 1883d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1884d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 188505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N, 1886475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 188705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1888c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1889d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 189005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1891a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta if (VT == MVT::i16) 1892a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::UDIV_I16; 1893a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta else if (VT == MVT::i32) 189405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I32; 189505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 189605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I64; 189705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 189805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I128; 189905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!"); 1900d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 1901475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1902c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, false, dl), Lo, Hi); 1903d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1904cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 190505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N, 1906475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 190705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1908c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 190969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 191005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 1911a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta if (VT == MVT::i16) 1912a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta LC = RTLIB::UREM_I16; 1913a43a7aefd753fe7d6005cbebc9619268db4ae139Sanjiv Gupta else if (VT == MVT::i32) 191405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I32; 191505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 191605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I64; 191705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 191805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I128; 191905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!"); 1920cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1921475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1922c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen SplitInteger(MakeLibCall(LC, VT, Ops, 2, false, dl), Lo, Hi); 1923cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1924cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 192505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N, 1926475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 192783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1928786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 1929475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 193005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 1931b3bc6352defdf1a5c6b1b0770d0c4d603f6524a8Duncan Sands // The low part is zero extension of the input (degenerates to a copy). 1932786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, N->getOperand(0)); 193305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // The high part is just a zero. 193405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 193505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 193605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 193705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 193805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1939475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 194005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 194105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 194205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 194305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 194405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 194505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 19464be0bdf7c1162824927dd3de89e016ae4934d0d6Dale Johannesen Hi = DAG.getZeroExtendInReg(Hi, dl, MVT::getIntegerVT(ExcessBits)); 19479e255b7df5a0a629920706e086e78ef89bf2f183Dan Gohman } 1948cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1949cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1950cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1951cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 195269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Operand Expansion 1953cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 1954cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 195505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandIntegerOperand - This method is called when the specified operand of 195605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// the specified node is found to need expansion. At this point, all of the 195705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// result types of the node are known to be legal, but other operands of the 195805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// node may need promotion or expansion as well as the specified one. 195905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer::ExpandIntegerOperand(SDNode *N, unsigned OpNo) { 1960fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman DEBUG(errs() << "Expand integer operand: "; N->dump(&DAG); errs() << "\n"); 1961475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 1962051bb7b07504be9f848f7cce802e62ed24980bc5Duncan Sands 1963f43071beddb7ed5b2fd7d2f06c4130460616a13dDuncan Sands if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) 1964bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta return false; 196511ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 1966bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta switch (N->getOpcode()) { 1967bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta default: 196805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #ifndef NDEBUG 1969fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman errs() << "ExpandIntegerOperand Op #" << OpNo << ": "; 1970fd87a544c00c2ca04ee23aae67bbcad4dc852a54Dan Gohman N->dump(&DAG); errs() << "\n"; 197105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #endif 1972c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to expand this operator's operand!"); 1973bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta 1974bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break; 197592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::BR_CC: Res = ExpandIntOp_BR_CC(N); break; 197692abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 1977bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 1978bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::INSERT_VECTOR_ELT: Res = ExpandOp_INSERT_VECTOR_ELT(N); break; 1979bb326bbe88d0b243d5d9d224308eb0c028d4d4afSanjiv Gupta case ISD::SCALAR_TO_VECTOR: Res = ExpandOp_SCALAR_TO_VECTOR(N); break; 198092abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::SELECT_CC: Res = ExpandIntOp_SELECT_CC(N); break; 198192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::SETCC: Res = ExpandIntOp_SETCC(N); break; 198292abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::SINT_TO_FP: Res = ExpandIntOp_SINT_TO_FP(N); break; 198392abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::STORE: Res = ExpandIntOp_STORE(cast<StoreSDNode>(N), OpNo); break; 198492abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::TRUNCATE: Res = ExpandIntOp_TRUNCATE(N); break; 198592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands case ISD::UINT_TO_FP: Res = ExpandIntOp_UINT_TO_FP(N); break; 198655467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 198755467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SHL: 198855467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRA: 198955467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::SRL: 199055467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::ROTL: 199155467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta case ISD::ROTR: Res = ExpandIntOp_Shift(N); break; 199205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 199369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 199405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is null, the sub-method took care of registering results etc. 1995ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 199647d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 199747d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // If the result is N, the sub-method updated N in place. Tell the legalizer 199847d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands // core about this. 199947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands if (Res.getNode() == N) 200005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 2001cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 200205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 200305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Invalid operand expansion"); 200405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2005475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 200605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 2007cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 2008cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 200911ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// IntegerExpandSetCCOperands - Expand the operands of a comparison. This code 201011ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// is shared among BR_CC, SELECT_CC, and SETCC handlers. 2011475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::IntegerExpandSetCCOperands(SDValue &NewLHS, 2012475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &NewRHS, 2013c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen ISD::CondCode &CCCode, 2014c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl) { 2015475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSLo, LHSHi, RHSLo, RHSHi; 201669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewLHS, LHSLo, LHSHi); 201769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewRHS, RHSLo, RHSHi); 201841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 201983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = NewLHS.getValueType(); 202041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 2021cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (CCCode == ISD::SETEQ || CCCode == ISD::SETNE) { 202211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (RHSLo == RHSHi) { 202311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (ConstantSDNode *RHSCST = dyn_cast<ConstantSDNode>(RHSLo)) { 2024cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (RHSCST->isAllOnesValue()) { 2025cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Equality comparison to -1. 20267fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands NewLHS = DAG.getNode(ISD::AND, dl, 2027786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen LHSLo.getValueType(), LHSLo, LHSHi); 2028cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSLo; 2029cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2030cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 203111ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 203211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 203369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2034786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getNode(ISD::XOR, dl, LHSLo.getValueType(), LHSLo, RHSLo); 2035786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewRHS = DAG.getNode(ISD::XOR, dl, LHSLo.getValueType(), LHSHi, RHSHi); 2036786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getNode(ISD::OR, dl, NewLHS.getValueType(), NewLHS, NewRHS); 2037cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 2038cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2039cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 204069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2041cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this is a comparison of the sign bit, just look at the top part. 2042cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // X > -1, x < 0 2043cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(NewRHS)) 2044002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((CCCode == ISD::SETLT && CST->isNullValue()) || // X < 0 2045cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETGT && CST->isAllOnesValue())) { // X > -1 2046cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = LHSHi; 2047cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSHi; 2048cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2049cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 205069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2051cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // FIXME: This generated code sucks. 2052cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::CondCode LowCC; 2053cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (CCCode) { 2054c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown integer setcc!"); 2055cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLT: 2056cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 2057cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGT: 2058cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 2059cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLE: 2060cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 2061cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGE: 2062cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 2063cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 206469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2065cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 2066cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 2067cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 206869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2069cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 2070cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 207178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen TargetLowering::DAGCombinerInfo DagCombineInfo(DAG, false, true, true, NULL); 2072475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2; 20735480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Tmp1 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSLo.getValueType()), 2074ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen LHSLo, RHSLo, LowCC, false, DagCombineInfo, dl); 2075ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp1.getNode()) 2076786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSLo.getValueType()), 20775480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LHSLo, RHSLo, LowCC); 20785480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Tmp2 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi.getValueType()), 2079ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen LHSHi, RHSHi, CCCode, false, DagCombineInfo, dl); 2080ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp2.getNode()) 2081786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Tmp2 = DAG.getNode(ISD::SETCC, dl, 2082786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen TLI.getSetCCResultType(LHSHi.getValueType()), 20835480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LHSHi, RHSHi, DAG.getCondCode(CCCode)); 208469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 2085ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp1C = dyn_cast<ConstantSDNode>(Tmp1.getNode()); 2086ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp2C = dyn_cast<ConstantSDNode>(Tmp2.getNode()); 2087002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((Tmp1C && Tmp1C->isNullValue()) || 2088002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->isNullValue() && 2089cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLE || CCCode == ISD::SETGE || 2090cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGE || CCCode == ISD::SETULE)) || 2091002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->getAPIntValue() == 1 && 2092cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLT || CCCode == ISD::SETGT || 2093cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGT || CCCode == ISD::SETULT))) { 2094cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // low part is known false, returns high part. 2095cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LE / GE, if high part is known false, ignore the low part. 2096cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LT / GT, if high part is known true, ignore the low part. 2097cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = Tmp2; 2098475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 2099cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 2100cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 210169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 21025480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands NewLHS = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi.getValueType()), 2103fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel LHSHi, RHSHi, ISD::SETEQ, false, 2104ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen DagCombineInfo, dl); 2105ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!NewLHS.getNode()) 2106786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()), 21075480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands LHSHi, RHSHi, ISD::SETEQ); 2108786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen NewLHS = DAG.getNode(ISD::SELECT, dl, Tmp1.getValueType(), 2109cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS, Tmp1, Tmp2); 2110475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 2111cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 2112cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2113475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_BR_CC(SDNode *N) { 2114475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 211505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 2116c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 211705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 211805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 211905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 2120ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 212105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 212205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 212305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 212405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 212505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 2126475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 212705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode), NewLHS, NewRHS, 212805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(4)); 212905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 213005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2131475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SELECT_CC(SDNode *N) { 2132475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 213305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 2134c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 213505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 213605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 213705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 2138ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 213905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 214005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 214105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 214205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 214305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 2144475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 214505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(2), N->getOperand(3), 214605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 214705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 214805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2149475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SETCC(SDNode *N) { 2150475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 215105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 2152c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode, N->getDebugLoc()); 215305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 215405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, use it. 2155ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 215605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(NewLHS.getValueType() == N->getValueType(0) && 215705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Unexpected setcc expansion!"); 215805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return NewLHS; 215905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 216005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 216105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, update N to have the operands specified. 2162475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 216305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 216405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 216505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 216655467af31620c9d027e071ebcd9746b7593cff17Sanjiv GuptaSDValue DAGTypeLegalizer::ExpandIntOp_Shift(SDNode *N) { 216755467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta // The value being shifted is legal, but the shift amount is too big. 216855467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta // It follows that either the result of the shift is undefined, or the 216955467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta // upper half of the shift amount is zero. Just use the lower half. 217055467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta SDValue Lo, Hi; 217155467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta GetExpandedInteger(N->getOperand(1), Lo, Hi); 217255467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Lo); 217355467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta} 217455467af31620c9d027e071ebcd9746b7593cff17Sanjiv Gupta 2175475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) { 2176475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 217705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 2178b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), DstVT); 217905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 218005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this SINT_TO_FP!"); 2181c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen return MakeLibCall(LC, DstVT, &Op, 1, true, N->getDebugLoc()); 218205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 218305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2184475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo) { 2185ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalStore(N)) 2186ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands return ExpandOp_NormalStore(N, OpNo); 218778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 218878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 2189cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(OpNo == 1 && "Can only expand the stored value so far"); 2190cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 219183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getOperand(1).getValueType(); 219283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 2193475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 2194475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 2195cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 2196cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 2197cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 2198786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen DebugLoc dl = N->getDebugLoc(); 2199475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 2200cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2201a1ace76c70ae5332d6f33fce5c0c1e2fdb8cca11Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 2202cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 220378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 220469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2205786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getTruncStore(Ch, dl, Lo, Ptr, N->getSrcValue(), SVOffset, 2206b625f2f8960de32bc973092aaee8ac62863006feDan Gohman N->getMemoryVT(), isVolatile, Alignment); 2207cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 2208cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 220969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2210cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2211786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getStore(Ch, dl, Lo, Ptr, N->getSrcValue(), SVOffset, 2212cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 2213cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2214cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 221583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 221683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 2217cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2218cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 221983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 2220786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 22210bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 2222786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getTruncStore(Ch, dl, Hi, Ptr, N->getSrcValue(), 2223cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 2224cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 2225786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 2226cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 2227cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned stores at 2228cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 222969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2230cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 223183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 223283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 223383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 2234cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 223583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT HiVT = MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits); 2236cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 223783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 2238cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer high bits from the top of Lo to the bottom of Hi. 2239786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::SHL, dl, NVT, Hi, 224083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 224192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy())); 2242786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getNode(ISD::OR, dl, NVT, Hi, 2243de06470330260f5937e7ca558f5f5b3e171f2ee5Dale Johannesen DAG.getNode(ISD::SRL, dl, NVT, Lo, 2244cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 224592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands TLI.getPointerTy()))); 2246cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2247cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2248cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store both the high bits and maybe some of the low bits. 2249786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Hi = DAG.getTruncStore(Ch, dl, Hi, Ptr, N->getSrcValue(), 2250cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset, HiVT, isVolatile, Alignment); 2251cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2252cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 2253786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 22540bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 2255cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store the lowest ExcessBits bits in the second half. 2256786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen Lo = DAG.getTruncStore(Ch, dl, Lo, Ptr, N->getSrcValue(), 2257cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, 225883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 2259cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 2260786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 2261cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2262cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 226305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2264475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_TRUNCATE(SDNode *N) { 2265475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 226605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 226705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Just truncate the low part of the source. 2268786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), N->getValueType(0), InL); 226905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 227005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2271475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) { 2272475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 227305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT SrcVT = Op.getValueType(); 227405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 2275c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen DebugLoc dl = N->getDebugLoc(); 227605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 227705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.getOperationAction(ISD::SINT_TO_FP, SrcVT) == TargetLowering::Custom){ 227805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Do a signed conversion then adjust the result. 2279786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue SignedConv = DAG.getNode(ISD::SINT_TO_FP, dl, DstVT, Op); 228005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SignedConv = TLI.LowerOperation(SignedConv, DAG); 228105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 228205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The result of the signed conversion needs adjusting if the 'sign bit' of 228305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // the incoming integer was set. To handle this, we dynamically test to see 228405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // if it is set, and, if so, add a fudge factor. 228505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 228605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE32 = 0x4F800000ULL; 228705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE64 = 0x5F800000ULL; 228805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE128 = 0x7F800000ULL; 228905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 229005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt FF(32, 0); 229105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (SrcVT == MVT::i32) 229205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE32); 229305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i64) 229405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE64); 229505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i128) 229605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE128); 229705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else 229805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(false && "Unsupported UINT_TO_FP!"); 229905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 230005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Check whether the sign bit is set. 2301475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 230205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(Op, Lo, Hi); 23037fb085871857134f8cbeb17499d4ab771ba8da42Duncan Sands SDValue SignSet = DAG.getSetCC(dl, 2304786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen TLI.getSetCCResultType(Hi.getValueType()), 23055480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Hi, DAG.getConstant(0, Hi.getValueType()), 2306ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands ISD::SETLT); 230705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 230805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Build a 64 bit pair (0, FF) in the constant pool, with FF in the lo bits. 2309001dbfebcbbded8c8e74b19e838b50da2b6c6fb5Owen Anderson SDValue FudgePtr = DAG.getConstantPool( 2310eed707b1e6097aac2bb6b3d47271f6300ace7f2eOwen Anderson ConstantInt::get(*DAG.getContext(), FF.zext(64)), 231149c18cce976c158e86f54c681dff21bb81640fb8Duncan Sands TLI.getPointerTy()); 231205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 231305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get a pointer to FF if the sign bit was set, or to 0 otherwise. 2314475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0); 2315475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Four = DAG.getIntPtrConstant(4); 231605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.isBigEndian()) std::swap(Zero, Four); 2317786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Offset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), SignSet, 2318ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands Zero, Four); 23191606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(FudgePtr)->getAlignment(); 2320786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen FudgePtr = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), FudgePtr, Offset); 232187a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 232205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 232305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Load the value out, extending it from f32 to the destination float type. 232405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // FIXME: Avoid the extend by constructing the right constant pool? 2325786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen SDValue Fudge = DAG.getExtLoad(ISD::EXTLOAD, dl, DstVT, DAG.getEntryNode(), 232687a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman FudgePtr, NULL, 0, MVT::f32, 232787a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman false, Alignment); 2328786fd4dded6a42561c0d82bbd9d13b9a4d8d9675Dale Johannesen return DAG.getNode(ISD::FADD, dl, DstVT, SignedConv, Fudge); 232905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 233005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 233105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, use a libcall. 2332b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getUINTTOFP(SrcVT, DstVT); 233305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 233405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this UINT_TO_FP!"); 2335c8fc99d66a03dc603f49d653937ad1d94e833006Dale Johannesen return MakeLibCall(LC, DstVT, &Op, 1, true, dl); 233605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 2337