LegalizeIntegerTypes.cpp revision 29a2822f287275a0d4df49f98104409d8f97c5df
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" 22cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattnerusing namespace llvm; 23cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 24cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 2569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Result Promotion 26cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 27cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// PromoteIntegerResult - This method is called when a result of a node is 2969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// found to be in need of promotion to a larger type. At this point, the node 3069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// may also have invalid operands or may have other results that need 3169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// expansion, we just know that (at least) one result needs promotion. 3269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::PromoteIntegerResult(SDNode *N, unsigned ResNo) { 3369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DEBUG(cerr << "Promote integer result: "; N->dump(&DAG); cerr << "\n"); 34475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = SDValue(); 3569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 36126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands // See if the target wants to custom expand this node. 37126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getValueType(ResNo)) == 38126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands TargetLowering::Custom) { 39126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands // If the target wants to, allow it to lower this itself. 40126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (SDNode *P = TLI.ReplaceNodeResults(N, DAG)) { 41126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands // Everything that once used N now uses P. We are guaranteed that the 42126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands // result value types of N and the result value types of P match. 43126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands ReplaceNodeWith(N, P); 44126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands return; 45126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands } 46126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands } 47126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 4869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (N->getOpcode()) { 4969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: 5069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands#ifndef NDEBUG 5169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands cerr << "PromoteIntegerResult #" << ResNo << ": "; 5269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->dump(&DAG); cerr << "\n"; 5369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands#endif 5469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(0 && "Do not know how to promote this operator!"); 5569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands abort(); 5695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands case ISD::AssertSext: Result = PromoteIntRes_AssertSext(N); break; 5795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands case ISD::AssertZext: Result = PromoteIntRes_AssertZext(N); break; 58bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BIT_CONVERT: Result = PromoteIntRes_BIT_CONVERT(N); break; 59c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands case ISD::BSWAP: Result = PromoteIntRes_BSWAP(N); break; 60bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BUILD_PAIR: Result = PromoteIntRes_BUILD_PAIR(N); break; 61bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::Constant: Result = PromoteIntRes_Constant(N); break; 62bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::CTLZ: Result = PromoteIntRes_CTLZ(N); break; 63bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::CTPOP: Result = PromoteIntRes_CTPOP(N); break; 64bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::CTTZ: Result = PromoteIntRes_CTTZ(N); break; 65bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::EXTRACT_VECTOR_ELT: 66bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Result = PromoteIntRes_EXTRACT_VECTOR_ELT(N); break; 67bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::LOAD: Result = PromoteIntRes_LOAD(cast<LoadSDNode>(N));break; 68bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT: Result = PromoteIntRes_SELECT(N); break; 69bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT_CC: Result = PromoteIntRes_SELECT_CC(N); break; 70bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SETCC: Result = PromoteIntRes_SETCC(N); break; 71bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SHL: Result = PromoteIntRes_SHL(N); break; 728d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands case ISD::SIGN_EXTEND_INREG: 738d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands Result = PromoteIntRes_SIGN_EXTEND_INREG(N); break; 74bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SRA: Result = PromoteIntRes_SRA(N); break; 75bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SRL: Result = PromoteIntRes_SRL(N); break; 7669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::TRUNCATE: Result = PromoteIntRes_TRUNCATE(N); break; 77bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::UNDEF: Result = PromoteIntRes_UNDEF(N); break; 78bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::VAARG: Result = PromoteIntRes_VAARG(N); break; 79bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 8069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SIGN_EXTEND: 8169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ZERO_EXTEND: 8269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ANY_EXTEND: Result = PromoteIntRes_INT_EXTEND(N); break; 83bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 8469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_SINT: 85bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::FP_TO_UINT: Result = PromoteIntRes_FP_TO_XINT(N); break; 8669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 8769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AND: 8869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::OR: 8969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::XOR: 9069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ADD: 9169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SUB: 92b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::MUL: Result = PromoteIntRes_SimpleIntBinOp(N); break; 9369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SDIV: 95b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::SREM: Result = PromoteIntRes_SDIV(N); break; 9669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::UDIV: 98b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::UREM: Result = PromoteIntRes_UDIV(N); break; 99b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 100b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_ADD_8: 101b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_SUB_8: 102b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_AND_8: 103b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_OR_8: 104b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_XOR_8: 105b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_NAND_8: 106b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MIN_8: 107b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MAX_8: 108b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMIN_8: 109b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMAX_8: 110b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_SWAP_8: 111b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_ADD_16: 112b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_SUB_16: 113b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_AND_16: 114b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_OR_16: 115b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_XOR_16: 116b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_NAND_16: 117b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MIN_16: 118b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MAX_16: 119b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMIN_16: 120b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMAX_16: 121b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_SWAP_16: 122b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_ADD_32: 123b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_SUB_32: 124b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_AND_32: 125b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_OR_32: 126b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_XOR_32: 127b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_NAND_32: 128b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MIN_32: 129b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MAX_32: 130b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMIN_32: 131b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMAX_32: 132b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_SWAP_32: 133b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_ADD_64: 134b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_SUB_64: 135b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_AND_64: 136b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_OR_64: 137b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_XOR_64: 138b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_NAND_64: 139b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MIN_64: 140b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_MAX_64: 141b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMIN_64: 142b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_LOAD_UMAX_64: 143b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_SWAP_64: 144b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Result = PromoteIntRes_Atomic1(cast<AtomicSDNode>(N)); break; 145b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 146b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_CMP_SWAP_8: 147b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_CMP_SWAP_16: 148b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_CMP_SWAP_32: 149b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands case ISD::ATOMIC_CMP_SWAP_64: 150b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Result = PromoteIntRes_Atomic2(cast<AtomicSDNode>(N)); break; 15169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 15269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 15369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // If Result is null, the sub-method took care of registering the result. 154ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Result.getNode()) 155475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SetPromotedInteger(SDValue(N, ResNo), Result); 15669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 15769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 158475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertSext(SDNode *N) { 15995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Sign-extend the new bits, and continue the assertion. 16095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT OldVT = N->getValueType(0); 161475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 16295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands return DAG.getNode(ISD::AssertSext, Op.getValueType(), 16395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), Op, 16495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getValueType(OldVT)), N->getOperand(1)); 16595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 16695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 167475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertZext(SDNode *N) { 16895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Zero the new bits, and continue the assertion. 16995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT OldVT = N->getValueType(0); 170475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 17195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands return DAG.getNode(ISD::AssertZext, Op.getValueType(), 17295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getZeroExtendInReg(Op, OldVT), N->getOperand(1)); 17395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 17495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 175b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Atomic1(AtomicSDNode *N) { 176b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op2 = GetPromotedInteger(N->getOperand(2)); 177b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Res = DAG.getAtomic(N->getOpcode(), N->getChain(), N->getBasePtr(), 178b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Op2, N->getSrcValue(), N->getAlignment()); 179b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // Legalized the chain result - switch anything that used the old chain to 180b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // use the new one. 181b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 182b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands return Res; 183b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands} 184b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 185b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan SandsSDValue DAGTypeLegalizer::PromoteIntRes_Atomic2(AtomicSDNode *N) { 186b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op2 = GetPromotedInteger(N->getOperand(2)); 187b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Op3 = GetPromotedInteger(N->getOperand(3)); 188b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands SDValue Res = DAG.getAtomic(N->getOpcode(), N->getChain(), N->getBasePtr(), 189b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands Op2, Op3, N->getSrcValue(), N->getAlignment()); 190b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // Legalized the chain result - switch anything that used the old chain to 191b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands // use the new one. 192b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 193b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands return Res; 194b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands} 195b5f68e241f9eb19e5694131df830acbfce20a6ebDuncan Sands 196475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BIT_CONVERT(SDNode *N) { 197475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InOp = N->getOperand(0); 19869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT InVT = InOp.getValueType(); 19969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NInVT = TLI.getTypeToTransformTo(InVT); 20069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OutVT = TLI.getTypeToTransformTo(N->getValueType(0)); 20169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 20269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (getTypeAction(InVT)) { 20369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: 20469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(false && "Unknown type action!"); 20569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 20669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case Legal: 20769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 20869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case PromoteInteger: 20969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OutVT.getSizeInBits() == NInVT.getSizeInBits()) 21069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The input promotes to the same size. Convert the promoted value. 21169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, OutVT, GetPromotedInteger(InOp)); 21269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 2134fc4fd657d4266059dac3849133a3a351b03d99dDuncan Sands case SoftenFloat: 21469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the integer operand by hand. 2154fc4fd657d4266059dac3849133a3a351b03d99dDuncan Sands return DAG.getNode(ISD::ANY_EXTEND, OutVT, GetSoftenedFloat(InOp)); 21669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandInteger: 21769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandFloat: 21869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 219f4e4629ee8c218f892ad8ae3e182fe40bc160895Duncan Sands case ScalarizeVector: 22069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert the element to an integer and promote it by hand. 22169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::ANY_EXTEND, OutVT, 22269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands BitConvertToInteger(GetScalarizedVector(InOp))); 223f4e4629ee8c218f892ad8ae3e182fe40bc160895Duncan Sands case SplitVector: 22469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // For example, i32 = BIT_CONVERT v2i16 on alpha. Convert the split 22569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // pieces of the input into integers and reassemble in the final type. 226475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 22769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetSplitVector(N->getOperand(0), Lo, Hi); 22869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Lo = BitConvertToInteger(Lo); 22969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Hi = BitConvertToInteger(Hi); 23069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 23169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 23269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 23369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 23469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands InOp = DAG.getNode(ISD::ANY_EXTEND, 23569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT::getIntegerVT(OutVT.getSizeInBits()), 23669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands JoinIntegers(Lo, Hi)); 23769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, OutVT, InOp); 23869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 23969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 24069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Otherwise, lower the bit-convert to a store/load from the stack, then 24169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // promote the load. 242475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = CreateStackStoreLoad(InOp, N->getValueType(0)); 243ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return PromoteIntRes_LOAD(cast<LoadSDNode>(Op.getNode())); 24469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 24569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 246475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BSWAP(SDNode *N) { 247475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 248c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands MVT OVT = N->getValueType(0); 249c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands MVT NVT = Op.getValueType(); 250c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 251c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 252c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands return DAG.getNode(ISD::SRL, NVT, DAG.getNode(ISD::BSWAP, NVT, Op), 253c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 254c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands} 255c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 256475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BUILD_PAIR(SDNode *N) { 257bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The pair element type may be legal, or may not promote to the same type as 258bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // the result, for example i14 = BUILD_PAIR (i7, i7). Handle all cases. 259bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::ANY_EXTEND, 260bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getTypeToTransformTo(N->getValueType(0)), 261bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands JoinIntegers(N->getOperand(0), N->getOperand(1))); 26269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 26369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 264475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_Constant(SDNode *N) { 26569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VT = N->getValueType(0); 266bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Zero extend things like i1, sign extend everything else. It shouldn't 267bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // matter in theory which one we pick, but this tends to give better code? 268bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Opc = VT.isByteSized() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 269475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = DAG.getNode(Opc, TLI.getTypeToTransformTo(VT), 270475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue(N, 0)); 271bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(isa<ConstantSDNode>(Result) && "Didn't constant fold ext?"); 272bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Result; 27369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 27469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 275475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTLZ(SDNode *N) { 276475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 27769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 27869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 27969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Zero extend to the promoted type and do the count there. 28069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Op = DAG.getNode(ISD::CTLZ, NVT, DAG.getZeroExtendInReg(Op, OVT)); 28169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Subtract off the extra leading bits in the bigger type. 28269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::SUB, NVT, Op, 28369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(NVT.getSizeInBits() - 28469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands OVT.getSizeInBits(), NVT)); 28569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 28669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 287475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTPOP(SDNode *N) { 288475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 28969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 29069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 29169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Zero extend to the promoted type and do the count there. 29269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::CTPOP, NVT, DAG.getZeroExtendInReg(Op, OVT)); 29369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 29469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 295475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTTZ(SDNode *N) { 296475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 29769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 29869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 29969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The count is the same in the promoted type except if the original 30069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // value was zero. This can be handled by setting the bit just off 30169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the top of the original type. 30203dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands APInt TopBit(NVT.getSizeInBits(), 0); 30303dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands TopBit.set(OVT.getSizeInBits()); 30403dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands Op = DAG.getNode(ISD::OR, NVT, Op, DAG.getConstant(TopBit, NVT)); 30569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::CTTZ, NVT, Op); 30669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 30769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 308475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N) { 30969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OldVT = N->getValueType(0); 310475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldVec = N->getOperand(0); 31169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands unsigned OldElts = OldVec.getValueType().getVectorNumElements(); 31269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 31369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OldElts == 1) { 31469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!isTypeLegal(OldVec.getValueType()) && 31569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands "Legal one-element vector of a type needing promotion!"); 31669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // It is tempting to follow GetScalarizedVector by a call to 31769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // GetPromotedInteger, but this would be wrong because the 31869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // scalarized value may not yet have been processed. 31969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::ANY_EXTEND, TLI.getTypeToTransformTo(OldVT), 32069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetScalarizedVector(OldVec)); 32169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 32269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 32369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert to a vector half as long with an element type of twice the width, 32469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // for example <4 x i16> -> <2 x i32>. 32569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!(OldElts & 1) && "Odd length vectors not supported!"); 32669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NewVT = MVT::getIntegerVT(2 * OldVT.getSizeInBits()); 32769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OldVT.isSimple() && NewVT.isSimple()); 32869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 329475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewVec = DAG.getNode(ISD::BIT_CONVERT, 33069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT::getVectorVT(NewVT, OldElts / 2), 33169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands OldVec); 33269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 33369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Extract the element at OldIdx / 2 from the new vector. 334475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldIdx = N->getOperand(1); 335475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewIdx = DAG.getNode(ISD::SRL, OldIdx.getValueType(), OldIdx, 33669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(1, TLI.getShiftAmountTy())); 337475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Elt = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, NewVT, NewVec, NewIdx); 33869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 33969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Select the appropriate half of the element: Lo if OldIdx was even, 34069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Hi if it was odd. 341475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Elt; 342475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = DAG.getNode(ISD::SRL, NewVT, Elt, 34369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(OldVT.getSizeInBits(), 34469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands TLI.getShiftAmountTy())); 34569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 34669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 34769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 348f6e29499ac036821e7f84e264663c24888d68c78Duncan Sands SDValue Odd = DAG.getNode(ISD::TRUNCATE, MVT::i1, OldIdx); 34969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::SELECT, NewVT, Odd, Hi, Lo); 35069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 35169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 352475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_FP_TO_XINT(SDNode *N) { 353bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned NewOpc = N->getOpcode(); 354bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 355d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 356bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If we're promoting a UINT to a larger size, check to see if the new node 357bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // will be legal. If it isn't, check to see if FP_TO_SINT is legal, since 358bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // we can use that instead. This allows us to generate better code for 359bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // FP_TO_UINT for small destination sizes on targets where FP_TO_UINT is not 360bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal, such as PowerPC. 361bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::FP_TO_UINT) { 362bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (!TLI.isOperationLegal(ISD::FP_TO_UINT, NVT) && 363bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands (TLI.isOperationLegal(ISD::FP_TO_SINT, NVT) || 364bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getOperationAction(ISD::FP_TO_SINT, NVT)==TargetLowering::Custom)) 365bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands NewOpc = ISD::FP_TO_SINT; 366bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 367d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 368bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(NewOpc, NVT, N->getOperand(0)); 369d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands} 370d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 371475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_INT_EXTEND(SDNode *N) { 372bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 373be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 374bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (getTypeAction(N->getOperand(0).getValueType()) == PromoteInteger) { 375475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 376bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType().getSizeInBits() <= NVT.getSizeInBits() && 377bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Extension doesn't make sense!"); 378126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 379bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result and operand types are the same after promotion, simplify 380bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // to an in-register extension. 381bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (NVT == Res.getValueType()) { 382bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The high bits are not guaranteed to be anything. Insert an extend. 383bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::SIGN_EXTEND) 384bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Res, 385bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(N->getOperand(0).getValueType())); 386bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::ZERO_EXTEND) 387bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getZeroExtendInReg(Res, N->getOperand(0).getValueType()); 388bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(N->getOpcode() == ISD::ANY_EXTEND && "Unknown integer extension!"); 389bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 390126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands } 39169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 39269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 393bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Otherwise, just extend the original operand all the way to the larger type. 394bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), NVT, N->getOperand(0)); 395bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 39669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 397475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_LOAD(LoadSDNode *N) { 398bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 399bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 400bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::LoadExtType ExtType = 401bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::isNON_EXTLoad(N) ? ISD::EXTLOAD : N->getExtensionType(); 402475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = DAG.getExtLoad(ExtType, NVT, N->getChain(), N->getBasePtr(), 403bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getSrcValue(), N->getSrcValueOffset(), 404bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getMemoryVT(), N->isVolatile(), 405bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getAlignment()); 40669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 407bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 408bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 409475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 410bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 41169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 41269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 413475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SDIV(SDNode *N) { 414bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Sign extend the input. 415475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 416475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 417bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 418bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands LHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, LHS.getValueType(), LHS, 419bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(VT)); 420bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands RHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, RHS.getValueType(), RHS, 421bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(VT)); 422bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 423bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 42469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 42569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 426475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT(SDNode *N) { 427475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(1)); 428475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(2)); 429bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SELECT, LHS.getValueType(), N->getOperand(0),LHS,RHS); 43069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 43169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 432475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT_CC(SDNode *N) { 433475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(2)); 434475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(3)); 435bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SELECT_CC, LHS.getValueType(), N->getOperand(0), 436bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 43769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 43869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 439475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SETCC(SDNode *N) { 440e47561ccff9c7a76f9392b26ae6202e30f1247edDuncan Sands MVT SVT = TLI.getSetCCResultType(N->getOperand(0)); 4417e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(isTypeLegal(SVT) && "Illegal SetCC type!"); 4427e4982287591945c4e42ba8470a978e629789c76Duncan Sands 4437e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Get the SETCC result using the canonical SETCC type. 4447e4982287591945c4e42ba8470a978e629789c76Duncan Sands SDValue SetCC = DAG.getNode(ISD::SETCC, 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)); 449e47561ccff9c7a76f9392b26ae6202e30f1247edDuncan Sands assert(NVT.getSizeInBits() <= SVT.getSizeInBits() && 450e47561ccff9c7a76f9392b26ae6202e30f1247edDuncan Sands "Integer type overpromoted?"); 4517e4982287591945c4e42ba8470a978e629789c76Duncan Sands return DAG.getNode(ISD::TRUNCATE, NVT, SetCC); 45269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 45369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 454475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SHL(SDNode *N) { 455bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SHL, 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)); 4618d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), Op, 4628d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands 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)); 471bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 47269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 47369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 474475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRA(SDNode *N) { 475bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly sign extended. 476bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 477bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 478475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 479bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Res, DAG.getValueType(VT)); 480bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SRA, NVT, Res, N->getOperand(1)); 481bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 48269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 483475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRL(SDNode *N) { 484bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly zero extended. 485bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 486bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 487475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = ZExtPromotedInteger(N->getOperand(0)); 488bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SRL, NVT, Res, N->getOperand(1)); 48969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 49069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 491475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_TRUNCATE(SDNode *N) { 492475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res; 49369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 494bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (getTypeAction(N->getOperand(0).getValueType())) { 495bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands default: assert(0 && "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 MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 506bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType().getSizeInBits() >= NVT.getSizeInBits() && 507bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Truncation doesn't make sense!"); 508bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (Res.getValueType() == NVT) 509bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 510bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 511bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate to NVT instead of VT 512bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::TRUNCATE, NVT, Res); 51369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 51469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 515475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UDIV(SDNode *N) { 516bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Zero extend the input. 517475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 518475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 519bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 520bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands LHS = DAG.getZeroExtendInReg(LHS, VT); 521bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands RHS = DAG.getZeroExtendInReg(RHS, VT); 52269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 523bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 524bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 52569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 526475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UNDEF(SDNode *N) { 527bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::UNDEF, TLI.getTypeToTransformTo(N->getValueType(0))); 52869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 52969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 530475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_VAARG(SDNode *N) { 531475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = N->getOperand(0); // Get the chain. 532475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getOperand(1); // Get the pointer. 533bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 53469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 535bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands const Value *V = cast<SrcValueSDNode>(N->getOperand(2))->getValue(); 536475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), Chain, Ptr, V, 0); 53769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 538bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Increment the arg pointer, VAList, to the next vaarg 539bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // FIXME: should the ABI size be used for the increment? Think of 540bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // x86 long double (10 bytes long, but aligned on 4 or 8 bytes) or 541bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // integers of unusual size (such MVT::i1, which gives an increment 542bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // of zero here!). 543bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Increment = VT.getSizeInBits() / 8; 544475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp = DAG.getNode(ISD::ADD, TLI.getPointerTy(), VAList, 54549c18cce976c158e86f54c681dff21bb81640fb8Duncan Sands DAG.getIntPtrConstant(Increment)); 54669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 547bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Store the incremented VAList to the pointer. 548bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Tmp = DAG.getStore(VAList.getValue(1), Tmp, Ptr, V, 0); 54969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 550bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Load the actual argument out of the arg pointer VAList. 551bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Tmp = DAG.getExtLoad(ISD::EXTLOAD, TLI.getTypeToTransformTo(VT), Tmp, 552bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands VAList, NULL, 0, VT); 55369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 554bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 555bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 556475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Tmp.getValue(1)); 557bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Tmp; 55869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 55969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 5607fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 561bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 562bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands// Integer Operand Promotion 563bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 5647fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 565bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// PromoteIntegerOperand - This method is called when the specified operand of 566bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// the specified node is found to need promotion. At this point, all of the 567bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// result types of the node are known to be legal, but other operands of the 568bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// node may need promotion or expansion as well as the specified one. 569bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sandsbool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) { 570bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DEBUG(cerr << "Promote integer operand: "; N->dump(&DAG); cerr << "\n"); 571475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 5727fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 573bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) 574bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands == TargetLowering::Custom) 575475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Res = TLI.LowerOperation(SDValue(N, OpNo), DAG); 57669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 577ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == 0) { 578bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (N->getOpcode()) { 579bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands default: 580bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #ifndef NDEBUG 581bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands cerr << "PromoteIntegerOperand Op #" << OpNo << ": "; 582bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->dump(&DAG); cerr << "\n"; 583bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #endif 584bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(0 && "Do not know how to promote this operator's operand!"); 585bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands abort(); 58669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 587bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::ANY_EXTEND: Res = PromoteIntOp_ANY_EXTEND(N); break; 588bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BR_CC: Res = PromoteIntOp_BR_CC(N, OpNo); break; 589bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BRCOND: Res = PromoteIntOp_BRCOND(N, OpNo); break; 590bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BUILD_PAIR: Res = PromoteIntOp_BUILD_PAIR(N); break; 591bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BUILD_VECTOR: Res = PromoteIntOp_BUILD_VECTOR(N); break; 592bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::FP_EXTEND: Res = PromoteIntOp_FP_EXTEND(N); break; 593bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::FP_ROUND: Res = PromoteIntOp_FP_ROUND(N); break; 594bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::INSERT_VECTOR_ELT: 595bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = PromoteIntOp_INSERT_VECTOR_ELT(N, OpNo);break; 596bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::MEMBARRIER: Res = PromoteIntOp_MEMBARRIER(N); break; 597bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT: Res = PromoteIntOp_SELECT(N, OpNo); break; 598bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT_CC: Res = PromoteIntOp_SELECT_CC(N, OpNo); break; 599bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SETCC: Res = PromoteIntOp_SETCC(N, OpNo); break; 600bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SIGN_EXTEND: Res = PromoteIntOp_SIGN_EXTEND(N); break; 601bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::STORE: Res = PromoteIntOp_STORE(cast<StoreSDNode>(N), 602bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands OpNo); break; 603bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::TRUNCATE: Res = PromoteIntOp_TRUNCATE(N); break; 604bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::ZERO_EXTEND: Res = PromoteIntOp_ZERO_EXTEND(N); break; 605bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 606bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SINT_TO_FP: 607bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::UINT_TO_FP: Res = PromoteIntOp_INT_TO_FP(N); break; 608bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 609bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 610bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 611bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is null, the sub-method took care of registering results etc. 612ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 613bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is N, the sub-method updated N in place. 614ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == N) { 615bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Mark N as new and remark N and its operands. This allows us to correctly 616bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // revisit N if it needs another step of promotion and allows us to visit 617bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // any new operands to N. 618bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ReanalyzeNode(N); 619bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return true; 620bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 621bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 622bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 623bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Invalid operand expansion"); 624bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 625475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 626bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return false; 62769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 62869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 62969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// PromoteSetCCOperands - Promote the operands of a comparison. This code is 63069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// shared among BR_CC, SELECT_CC, and SETCC handlers. 631475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::PromoteSetCCOperands(SDValue &NewLHS,SDValue &NewRHS, 63269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands ISD::CondCode CCCode) { 63369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VT = NewLHS.getValueType(); 63469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 63569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Get the promoted values. 63669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = GetPromotedInteger(NewLHS); 63769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = GetPromotedInteger(NewRHS); 63869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 63969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Otherwise, we have to insert explicit sign or zero extends. Note 64069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that we could insert sign extends for ALL conditions, but zero extend 64169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // is cheaper on many machines (an AND instead of two shifts), so prefer 64269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // it. 64369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (CCCode) { 64469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: assert(0 && "Unknown integer comparison!"); 64569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETEQ: 64669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETNE: 64769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGE: 64869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGT: 64969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULE: 65069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULT: 65169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // ALL of these operations will work if we either sign or zero extend 65269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the operands (including the unsigned comparisons!). Zero extend is 65369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // usually a simpler/cheaper operation, so prefer it. 65469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = DAG.getZeroExtendInReg(NewLHS, VT); 65569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = DAG.getZeroExtendInReg(NewRHS, VT); 65611ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 65769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGE: 65869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGT: 65969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLT: 66069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLE: 66169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, NewLHS.getValueType(), NewLHS, 66269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getValueType(VT)); 66369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, NewRHS.getValueType(), NewRHS, 66469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getValueType(VT)); 66511ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 66669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 66769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 66869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 669475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ANY_EXTEND(SDNode *N) { 670475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 671bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 672bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 67369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 674475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo) { 675bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 2 && "Don't know how to promote this operand!"); 67669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 677475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(2); 678475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(3); 679bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(1))->get()); 68069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 681bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0), CC (#1) and basic block destination (Op#4) are always 682bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal types. 683475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 684bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 685bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 686bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 687475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo) { 688bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 1 && "only know how to promote condition"); 689475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Cond = GetPromotedInteger(N->getOperand(1)); // Promote condition. 690bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 691bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The top bits of the promoted condition are not necessarily zero, ensure 692bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that the value is properly zero extended. 693bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned BitWidth = Cond.getValueSizeInBits(); 694bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (!DAG.MaskedValueIsZero(Cond, 695bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands APInt::getHighBitsSet(BitWidth, BitWidth-1))) 696bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Cond = DAG.getZeroExtendInReg(Cond, MVT::i1); 697bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 698bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0) and basic block destination (Op#2) are always legal types. 699475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Cond, 700bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(2)); 701bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 702bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 703475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_PAIR(SDNode *N) { 704bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Since the result type is legal, the operands must promote to it. 705bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT OVT = N->getOperand(0).getValueType(); 706475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = GetPromotedInteger(N->getOperand(0)); 707475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = GetPromotedInteger(N->getOperand(1)); 708bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Lo.getValueType() == N->getValueType(0) && "Operand over promoted?"); 709bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 710bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Lo = DAG.getZeroExtendInReg(Lo, OVT); 711bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Hi = DAG.getNode(ISD::SHL, N->getValueType(0), Hi, 712bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getConstant(OVT.getSizeInBits(), 713bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getShiftAmountTy())); 714bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::OR, N->getValueType(0), Lo, Hi); 71569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 71669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 717475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_VECTOR(SDNode *N) { 71869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The vector type is legal but the element type is not. This implies 71969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that the vector is a power-of-two in length and that the element 72069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // type does not have a strange size (eg: it is not i1). 72169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VecVT = N->getValueType(0); 72269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands unsigned NumElts = VecVT.getVectorNumElements(); 72369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!(NumElts & 1) && "Legal vector of one illegal element?"); 72469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 72569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Build a vector of half the length out of elements of twice the bitwidth. 72669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // For example <4 x i16> -> <2 x i32>. 72769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OldVT = N->getOperand(0).getValueType(); 72869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NewVT = MVT::getIntegerVT(2 * OldVT.getSizeInBits()); 72969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OldVT.isSimple() && NewVT.isSimple()); 73069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 731475871a144eb604ddaf37503397ba0941442e5fbDan Gohman std::vector<SDValue> NewElts; 73269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewElts.reserve(NumElts/2); 73369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 73469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 0; i < NumElts; i += 2) { 73569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Combine two successive elements into one promoted element. 736475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = N->getOperand(i); 737475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = N->getOperand(i+1); 73869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 73969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 74069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewElts.push_back(JoinIntegers(Lo, Hi)); 74169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 74269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 743475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewVec = DAG.getNode(ISD::BUILD_VECTOR, 74469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT::getVectorVT(NewVT, NewElts.size()), 74569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands &NewElts[0], NewElts.size()); 74669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 74769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert the new vector to the old vector type. 74869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, VecVT, NewVec); 74969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 75069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 751475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_FP_EXTEND(SDNode *N) { 752475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 753bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::FP_EXTEND, N->getValueType(0), Op); 754bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 755bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 756475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_FP_ROUND(SDNode *N) { 757475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 758bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::FP_ROUND, N->getValueType(0), Op, 759bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getIntPtrConstant(0)); 760bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 761bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 762475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, 763475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned OpNo) { 76469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OpNo == 1) { 76569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the inserted value. This is valid because the type does not 76669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // have to match the vector element type. 76769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 76869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Check that any extra bits introduced will be truncated away. 76969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(N->getOperand(1).getValueType().getSizeInBits() >= 77069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getValueType(0).getVectorElementType().getSizeInBits() && 77169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands "Type of inserted value narrower than vector element type!"); 772475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 77369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetPromotedInteger(N->getOperand(1)), 77469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(2)); 77569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 77669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 77769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OpNo == 2 && "Different operand and result vector types?"); 77869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 77969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the index. 780475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Idx = N->getOperand(2); 78169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Idx = DAG.getZeroExtendInReg(GetPromotedInteger(Idx), Idx.getValueType()); 782475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 78369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(1), Idx); 78469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 78569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 786475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INT_TO_FP(SDNode *N) { 787475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue In = GetPromotedInteger(N->getOperand(0)); 788bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT OpVT = N->getOperand(0).getValueType(); 789bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::UINT_TO_FP) 790bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In = DAG.getZeroExtendInReg(In, OpVT); 791bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands else 792bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In = DAG.getNode(ISD::SIGN_EXTEND_INREG, In.getValueType(), 793bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In, DAG.getValueType(OpVT)); 794bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 795475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), In); 796bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 797bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 798475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_MEMBARRIER(SDNode *N) { 799475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewOps[6]; 80069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[0] = N->getOperand(0); 80169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 1; i < array_lengthof(NewOps); ++i) { 802475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag = GetPromotedInteger(N->getOperand(i)); 80369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[i] = DAG.getZeroExtendInReg(Flag, MVT::i1); 80469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 805475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue (N, 0), NewOps, 80669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands array_lengthof(NewOps)); 80769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 80869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 809475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT(SDNode *N, unsigned OpNo) { 810bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Only know how to promote condition"); 8117e4982287591945c4e42ba8470a978e629789c76Duncan Sands SDValue Cond = GetPromotedInteger(N->getOperand(0)); 8127e4982287591945c4e42ba8470a978e629789c76Duncan Sands 8137e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Promote all the way up to SVT, the canonical SetCC type. 8147e4982287591945c4e42ba8470a978e629789c76Duncan Sands MVT SVT = TLI.getSetCCResultType(Cond); 8157e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(isTypeLegal(SVT) && "Illegal SetCC type!"); 8167e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(Cond.getValueSizeInBits() <= SVT.getSizeInBits() && 8177e4982287591945c4e42ba8470a978e629789c76Duncan Sands "Integer type overpromoted?"); 818bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 8197e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Make sure the extra bits conform to getSetCCResultContents. There are 8207e4982287591945c4e42ba8470a978e629789c76Duncan Sands // two sets of extra bits: those in Cond, which come from type promotion, 8217e4982287591945c4e42ba8470a978e629789c76Duncan Sands // and those we need to add to have the final type be SVT (for most targets 8227e4982287591945c4e42ba8470a978e629789c76Duncan Sands // this last set of bits is empty). 8237e4982287591945c4e42ba8470a978e629789c76Duncan Sands unsigned CondBits = Cond.getValueSizeInBits(); 8247e4982287591945c4e42ba8470a978e629789c76Duncan Sands ISD::NodeType ExtendCode; 8257e4982287591945c4e42ba8470a978e629789c76Duncan Sands switch (TLI.getSetCCResultContents()) { 8267e4982287591945c4e42ba8470a978e629789c76Duncan Sands default: 8277e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(false && "Unknown SetCCResultValue!"); 8287e4982287591945c4e42ba8470a978e629789c76Duncan Sands case TargetLowering::UndefinedSetCCResult: 8297e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Extend to SVT by adding rubbish. 8307e4982287591945c4e42ba8470a978e629789c76Duncan Sands ExtendCode = ISD::ANY_EXTEND; 8317e4982287591945c4e42ba8470a978e629789c76Duncan Sands break; 8327e4982287591945c4e42ba8470a978e629789c76Duncan Sands case TargetLowering::ZeroOrOneSetCCResult: 8337e4982287591945c4e42ba8470a978e629789c76Duncan Sands ExtendCode = ISD::ZERO_EXTEND; 8347e4982287591945c4e42ba8470a978e629789c76Duncan Sands if (!DAG.MaskedValueIsZero(Cond,APInt::getHighBitsSet(CondBits,CondBits-1))) 8357e4982287591945c4e42ba8470a978e629789c76Duncan Sands // All extra bits need to be cleared. Do this by zero extending the 8363b521d5acccf4fecdb1aea878180df6dc29553dcDuncan Sands // original condition value all the way to SVT. 8377e4982287591945c4e42ba8470a978e629789c76Duncan Sands Cond = N->getOperand(0); 8387e4982287591945c4e42ba8470a978e629789c76Duncan Sands break; 8397e4982287591945c4e42ba8470a978e629789c76Duncan Sands case TargetLowering::ZeroOrNegativeOneSetCCResult: { 8407e4982287591945c4e42ba8470a978e629789c76Duncan Sands ExtendCode = ISD::SIGN_EXTEND; 8417e4982287591945c4e42ba8470a978e629789c76Duncan Sands unsigned SignBits = DAG.ComputeNumSignBits(Cond); 8427e4982287591945c4e42ba8470a978e629789c76Duncan Sands if (SignBits != CondBits) 8437e4982287591945c4e42ba8470a978e629789c76Duncan Sands // All extra bits need to be sign extended. Do this by sign extending the 8443b521d5acccf4fecdb1aea878180df6dc29553dcDuncan Sands // original condition value all the way to SVT. 8457e4982287591945c4e42ba8470a978e629789c76Duncan Sands Cond = N->getOperand(0); 8467e4982287591945c4e42ba8470a978e629789c76Duncan Sands break; 8477e4982287591945c4e42ba8470a978e629789c76Duncan Sands } 8487e4982287591945c4e42ba8470a978e629789c76Duncan Sands } 8497e4982287591945c4e42ba8470a978e629789c76Duncan Sands Cond = DAG.getNode(ExtendCode, SVT, Cond); 850bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 8517e4982287591945c4e42ba8470a978e629789c76Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), Cond, 8527e4982287591945c4e42ba8470a978e629789c76Duncan Sands N->getOperand(1), N->getOperand(2)); 853bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 854bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 855475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo) { 856bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 857bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 858475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 859475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 860bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(4))->get()); 861bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 862bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#4) and the possible return values (#2 and #3) have legal types. 863475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2), 864bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(3), N->getOperand(4)); 865bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 866bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 867475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SETCC(SDNode *N, unsigned OpNo) { 868bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 869bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 870475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 871475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 872bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(2))->get()); 873bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 874bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#2) is always legal. 875475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2)); 876bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 877bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 878475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SIGN_EXTEND(SDNode *N) { 879475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 880bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op = DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 881bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), 882bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op, DAG.getValueType(N->getOperand(0).getValueType())); 883bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 884bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 885475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo){ 886bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 887475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(), Ptr = N->getBasePtr(); 888bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands int SVOffset = N->getSrcValueOffset(); 889bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Alignment = N->getAlignment(); 890bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands bool isVolatile = N->isVolatile(); 891bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 892475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = GetPromotedInteger(N->getValue()); // Get promoted value. 893bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 894bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(!N->isTruncatingStore() && "Cannot promote this store operand!"); 895bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 896bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate the value and store the result. 897bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getTruncStore(Ch, Val, Ptr, N->getSrcValue(), 898bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands SVOffset, N->getMemoryVT(), 899bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands isVolatile, Alignment); 900bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 901bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 902475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_TRUNCATE(SDNode *N) { 903475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 904bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::TRUNCATE, N->getValueType(0), Op); 905bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 906bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 907475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ZERO_EXTEND(SDNode *N) { 908475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 909bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op = DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 910bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getZeroExtendInReg(Op, N->getOperand(0).getValueType()); 911bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 912bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 91369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 91469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 91569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Result Expansion 91669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 91769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 91869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// ExpandIntegerResult - This method is called when the specified result of the 919cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// specified node is found to need expansion. At this point, the node may also 920cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// have invalid operands or may have other results that need promotion, we just 921cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// know that (at least) one result needs expansion. 92269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) { 92369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DEBUG(cerr << "Expand integer result: "; N->dump(&DAG); cerr << "\n"); 924475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 925475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Lo = Hi = SDValue(); 926cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 927cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // See if the target wants to custom expand this node. 928126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getValueType(ResNo)) == 929126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands TargetLowering::Custom) { 930cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If the target wants to, allow it to lower this itself. 931126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (SDNode *P = TLI.ReplaceNodeResults(N, DAG)) { 932cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Everything that once used N now uses P. We are guaranteed that the 933cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // result value types of N and the result value types of P match. 934cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ReplaceNodeWith(N, P); 935cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 936cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 937cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 938cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 939cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (N->getOpcode()) { 940cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: 941cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#ifndef NDEBUG 94269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands cerr << "ExpandIntegerResult #" << ResNo << ": "; 943cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner N->dump(&DAG); cerr << "\n"; 944cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#endif 94578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(0 && "Do not know how to expand the result of this operator!"); 946cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner abort(); 94769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 94878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break; 94978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 95078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 95178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 95278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 95378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break; 95478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 9554a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 95678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 95778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 95869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ANY_EXTEND: ExpandIntRes_ANY_EXTEND(N, Lo, Hi); break; 95995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands case ISD::AssertSext: ExpandIntRes_AssertSext(N, Lo, Hi); break; 96069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AssertZext: ExpandIntRes_AssertZext(N, Lo, Hi); break; 96105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BSWAP: ExpandIntRes_BSWAP(N, Lo, Hi); break; 96205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::Constant: ExpandIntRes_Constant(N, Lo, Hi); break; 96305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTLZ: ExpandIntRes_CTLZ(N, Lo, Hi); break; 96405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTPOP: ExpandIntRes_CTPOP(N, Lo, Hi); break; 96505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTTZ: ExpandIntRes_CTTZ(N, Lo, Hi); break; 96669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_SINT: ExpandIntRes_FP_TO_SINT(N, Lo, Hi); break; 96769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_UINT: ExpandIntRes_FP_TO_UINT(N, Lo, Hi); break; 96869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::LOAD: ExpandIntRes_LOAD(cast<LoadSDNode>(N), Lo, Hi); break; 96905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::MUL: ExpandIntRes_MUL(N, Lo, Hi); break; 97005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SDIV: ExpandIntRes_SDIV(N, Lo, Hi); break; 97105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND: ExpandIntRes_SIGN_EXTEND(N, Lo, Hi); break; 97205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND_INREG: ExpandIntRes_SIGN_EXTEND_INREG(N, Lo, Hi); break; 97305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SREM: ExpandIntRes_SREM(N, Lo, Hi); break; 97405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: ExpandIntRes_TRUNCATE(N, Lo, Hi); break; 97505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UDIV: ExpandIntRes_UDIV(N, Lo, Hi); break; 97605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UREM: ExpandIntRes_UREM(N, Lo, Hi); break; 97705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::ZERO_EXTEND: ExpandIntRes_ZERO_EXTEND(N, Lo, Hi); break; 97869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 979cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::AND: 980cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::OR: 98105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::XOR: ExpandIntRes_Logical(N, Lo, Hi); break; 98205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 983cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADD: 98405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUB: ExpandIntRes_ADDSUB(N, Lo, Hi); break; 98505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 986cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDC: 98705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBC: ExpandIntRes_ADDSUBC(N, Lo, Hi); break; 98805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 989cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDE: 99005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBE: ExpandIntRes_ADDSUBE(N, Lo, Hi); break; 99105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 992cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SHL: 993cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SRA: 99405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: ExpandIntRes_Shift(N, Lo, Hi); break; 995cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 996d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 997cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If Lo/Hi is null, the sub-method took care of registering results etc. 998ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Lo.getNode()) 999475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SetExpandedInteger(SDValue(N, ResNo), Lo, Hi); 1000cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1001cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 100205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftByConstant - N is a shift by a value that needs to be expanded, 100305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// and the shift amount is a constant 'Amt'. Expand the operation. 100405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandShiftByConstant(SDNode *N, unsigned Amt, 1005475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 100605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the incoming operand to be shifted, so that we have its parts 1007475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 100805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 1009cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 101005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = InL.getValueType(); 101105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned VTBits = N->getValueType(0).getSizeInBits(); 101205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 101305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = N->getOperand(1).getValueType(); 1014cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 101505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SHL) { 101605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 101705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = Hi = DAG.getConstant(0, NVT); 101805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 101905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 102005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Amt-NVTBits,ShTy)); 102105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 102205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 102305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = InL; 102405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == 1) { 102505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Emit this X << 1 as X+X. 102605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 1027475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { InL, InL }; 102805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 1029475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { InH, InH, Lo.getValue(1) }; 103005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 103105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 103205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Amt, ShTy)); 103305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 103405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 103505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 103605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 103705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 103805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 103905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 1040cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1041cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 104205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SRL) { 104305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 104405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 104505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 104605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 104705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Amt-NVTBits,ShTy)); 104805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 104905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 105005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 105105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 105205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 105305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::OR, NVT, 105405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 105505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 105605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 105705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 105805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Amt, ShTy)); 105905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 106005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 1061cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1062d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 106305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 106405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 106505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = Lo = DAG.getNode(ISD::SRA, NVT, InH, 106605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 106705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 106805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRA, NVT, InH, 106905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt-NVTBits, ShTy)); 107005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, 107105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 107205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 107305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 107405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, 107505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 1076d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } else { 107705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::OR, NVT, 107805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 107905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 108005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 108105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 108205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, DAG.getConstant(Amt, ShTy)); 1083d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } 1084d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands} 1085d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 108605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftWithKnownAmountBit - Try to determine whether we can simplify 108705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// this shift based on knowledge of the high bit of the shift amount. If we 108805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// can tell this, we know that it is >= 32 or < 32, without knowing the actual 108905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// shift amount. 109005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer:: 1091475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi) { 1092475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt = N->getOperand(1); 109383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 109405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = Amt.getValueType(); 109505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ShBits = ShTy.getSizeInBits(); 109605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 109705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(isPowerOf2_32(NVTBits) && 109805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Expanded integer type size not a power of two!"); 1099cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 110005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt HighBitMask = APInt::getHighBitsSet(ShBits, ShBits - Log2_32(NVTBits)); 110105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt KnownZero, KnownOne; 110205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.ComputeMaskedBits(N->getOperand(1), HighBitMask, KnownZero, KnownOne); 1103cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 110405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we don't know anything about the high bits, exit. 110505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (((KnownZero|KnownOne) & HighBitMask) == 0) 110605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 1107cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 110805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get the incoming operand to be shifted. 1109475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 111005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 1111be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 111205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that any of the high bits of the shift amount are one, then we 111305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 111405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (KnownOne.intersects(HighBitMask)) { 111505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mask out the high bit, which we know is set. 111605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt = DAG.getNode(ISD::AND, ShTy, Amt, 111705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(~HighBitMask, ShTy)); 111805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 111905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 112005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: assert(0 && "Unknown shift"); 112105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: 112205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); // Low part is zero. 112305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SHL, NVT, InL, Amt); // High part from Lo part. 112405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 112505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 112605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // Hi part is zero. 112705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRL, NVT, InH, Amt); // Lo part from Hi part. 112805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 112905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: 113005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, // Sign extend high part. 113105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 113205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRA, NVT, InH, Amt); // Lo part from Hi part. 113305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 113405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 113505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 113605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 113705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that all of the high bits of the shift amount are zero, then we 113805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 113905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if ((KnownZero & HighBitMask) == HighBitMask) { 114005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Compute 32-amt. 1141475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt2 = DAG.getNode(ISD::SUB, ShTy, 114205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits, ShTy), 114305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt); 114405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned Op1, Op2; 114505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 114605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: assert(0 && "Unknown shift"); 114705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: Op1 = ISD::SHL; Op2 = ISD::SRL; break; 114805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 114905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: Op1 = ISD::SRL; Op2 = ISD::SHL; break; 115005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 115105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 115205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), NVT, InL, Amt); 115305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 115405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op1, NVT, InH, Amt), 115505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op2, NVT, InL, Amt2)); 115605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 115705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 115805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 115905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 116005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 116105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 116205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUB(SDNode *N, 1163475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 116405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1165475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 116605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 116705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 116829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands 116929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands MVT NVT = LHSL.getValueType(); 117029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 1171475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1172475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 117305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 117429a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // Do not generate ADDC/ADDE or SUBC/SUBE if the target does not support 117529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // them. TODO: Teach operation legalization how to expand unsupported 117629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // ADDC/ADDE/SUBC/SUBE. The problem is that these operations generate 117729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // a carry of type MVT::Flag, but there doesn't seem to be any way to 117829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands // generate a value of this type in the expanded code sequence. 117929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands bool hasCarry = 118029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands TLI.isOperationLegal(N->getOpcode() == ISD::ADD ? ISD::ADDC : ISD::SUBC, 118129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands TLI.getTypeToExpandTo(NVT)); 118229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands 118329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (hasCarry) { 118429a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (N->getOpcode() == ISD::ADD) { 118529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 118629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands HiOps[2] = Lo.getValue(1); 118729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 118829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } else { 118929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Lo = DAG.getNode(ISD::SUBC, VTList, LoOps, 2); 119029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands HiOps[2] = Lo.getValue(1); 119129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Hi = DAG.getNode(ISD::SUBE, VTList, HiOps, 3); 119229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } 119305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 119429a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands if (N->getOpcode() == ISD::ADD) { 119529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Lo = DAG.getNode(ISD::ADD, VTList, LoOps, 2); 119629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Hi = DAG.getNode(ISD::ADD, VTList, HiOps, 2); 119729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands SDValue Cmp1 = DAG.getSetCC(TLI.getSetCCResultType(Lo), Lo, LoOps[0], 119829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands ISD::SETULT); 119929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands SDValue Carry1 = DAG.getNode(ISD::SELECT, NVT, Cmp1, 120029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), 120129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(0, NVT)); 120229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands SDValue Cmp2 = DAG.getSetCC(TLI.getSetCCResultType(Lo), Lo, LoOps[1], 120329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands ISD::SETULT); 120429a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands SDValue Carry2 = DAG.getNode(ISD::SELECT, NVT, Cmp2, 120529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), Carry1); 120629a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Hi = DAG.getNode(ISD::ADD, NVT, Hi, Carry2); 120729a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } else { 120829a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Lo = DAG.getNode(ISD::SUB, VTList, LoOps, 2); 120929a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Hi = DAG.getNode(ISD::SUB, VTList, HiOps, 2); 121029a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands SDValue Cmp = DAG.getSetCC(NVT, LoOps[0], LoOps[1], ISD::SETULT); 121129a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands SDValue Borrow = DAG.getNode(ISD::SELECT, NVT, Cmp, 121229a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(1, NVT), 121329a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands DAG.getConstant(0, NVT)); 121429a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands Hi = DAG.getNode(ISD::SUB, NVT, Hi, Borrow); 121529a2822f287275a0d4df49f98104409d8f97c5dfDuncan Sands } 121605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 121705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 121805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 121905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBC(SDNode *N, 1220475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 122105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1222475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 122305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 122405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 122505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1226475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1227475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 122805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 122905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::ADDC) { 123005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 123105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 123205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 123305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 123405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SUBC, VTList, LoOps, 2); 123505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 123605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SUBE, VTList, HiOps, 3); 123705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 123805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 123905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Legalized the flag result - switch anything that used the old flag to 124005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // use the new one. 1241475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 124205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 124305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 124405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBE(SDNode *N, 1245475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 124605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1247475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 124805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 124905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 125005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1251475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[3] = { LHSL, RHSL, N->getOperand(2) }; 1252475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 125305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 125405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), VTList, LoOps, 3); 125505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 125605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(N->getOpcode(), VTList, HiOps, 3); 125705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 125805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Legalized the flag result - switch anything that used the old flag to 125905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // use the new one. 1260475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 126105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 126205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 126305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ANY_EXTEND(SDNode *N, 1264475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 126505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1266475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 126705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 126805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is any extension of the input (which degenerates to a copy). 126905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ANY_EXTEND, NVT, Op); 127005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::UNDEF, NVT); // The high part is undefined. 127105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 127205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 127305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 127405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 127505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1276475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 127705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 127805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 127905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 128005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 128105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 128205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 128305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 128495db39a9de48f69f4d764335b492b83a698c7854Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertSext(SDNode *N, 1285475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 128695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 128795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT NVT = Lo.getValueType(); 128895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 128995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned NVTBits = NVT.getSizeInBits(); 129095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned EVTBits = EVT.getSizeInBits(); 129195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 129295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands if (NVTBits < EVTBits) { 129395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Hi = DAG.getNode(ISD::AssertSext, NVT, Hi, 129495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 129595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } else { 129695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Lo = DAG.getNode(ISD::AssertSext, NVT, Lo, DAG.getValueType(EVT)); 129795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // The high part replicates the sign bit of Lo, make it explicit. 129895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Hi = DAG.getNode(ISD::SRA, NVT, Lo, 129995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getConstant(NVTBits-1, TLI.getShiftAmountTy())); 130095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } 130195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 130295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 130305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertZext(SDNode *N, 1304475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 130505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 130605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 130705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 130805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 130905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned EVTBits = EVT.getSizeInBits(); 131005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 131105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (NVTBits < EVTBits) { 131205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::AssertZext, NVT, Hi, 131305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 131405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 131505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::AssertZext, NVT, Lo, DAG.getValueType(EVT)); 131605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part must be zero, make it explicit. 131705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 131805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 131905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 132005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 132105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_BSWAP(SDNode *N, 1322475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 132305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Hi, Lo); // Note swapped operands. 132405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::BSWAP, Lo.getValueType(), Lo); 132505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::BSWAP, Hi.getValueType(), Hi); 132605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 132705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 132805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Constant(SDNode *N, 1329475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 133005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 133105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NBitWidth = NVT.getSizeInBits(); 133205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const APInt &Cst = cast<ConstantSDNode>(N)->getAPIntValue(); 133305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(APInt(Cst).trunc(NBitWidth), NVT); 133405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(Cst.lshr(NBitWidth).trunc(NBitWidth), NVT); 133505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 133605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 133705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTLZ(SDNode *N, 1338475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 133905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctlz (HiLo) -> Hi != 0 ? ctlz(Hi) : (ctlz(Lo)+32) 134005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 134105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 134205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1343475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiNotZero = DAG.getSetCC(TLI.getSetCCResultType(Hi), Hi, 1344ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 134505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1346475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoLZ = DAG.getNode(ISD::CTLZ, NVT, Lo); 1347475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiLZ = DAG.getNode(ISD::CTLZ, NVT, Hi); 134805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 134905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SELECT, NVT, HiNotZero, HiLZ, 135005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::ADD, NVT, LoLZ, 135105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 135205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 135305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 135405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 135505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTPOP(SDNode *N, 1356475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 135705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctpop(HiLo) -> ctpop(Hi)+ctpop(Lo) 135805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 135905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 136005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADD, NVT, DAG.getNode(ISD::CTPOP, NVT, Lo), 136105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::CTPOP, NVT, Hi)); 136205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 136305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 136405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 136505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTTZ(SDNode *N, 1366475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 136705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // cttz (HiLo) -> Lo != 0 ? cttz(Lo) : (cttz(Hi)+32) 136805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 136905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 137005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1371475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoNotZero = DAG.getSetCC(TLI.getSetCCResultType(Lo), Lo, 1372ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 137305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1374475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoLZ = DAG.getNode(ISD::CTTZ, NVT, Lo); 1375475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiLZ = DAG.getNode(ISD::CTTZ, NVT, Hi); 137605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 137705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SELECT, NVT, LoNotZero, LoLZ, 137805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::ADD, NVT, HiLZ, 137905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 138005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 138105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 138205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1383475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_SINT(SDNode *N, SDValue &Lo, 1384475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 138505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1386475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1387b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOSINT(Op.getValueType(), VT); 1388be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-sint conversion!"); 138941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, &Op, 1, true/*sign irrelevant*/), Lo, Hi); 1390ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1391ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 1392475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo, 1393475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 139483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 1395475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1396b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOUINT(Op.getValueType(), VT); 1397be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-uint conversion!"); 139841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, &Op, 1, false/*sign irrelevant*/), Lo, Hi); 1399ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1400ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 140169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_LOAD(LoadSDNode *N, 1402475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1403ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalLoad(N)) { 1404ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands ExpandRes_NormalLoad(N, Lo, Hi); 140578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 140678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 140778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 140878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 140978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 141083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 141183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1412475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 1413475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 1414cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::LoadExtType ExtType = N->getExtensionType(); 1415cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 1416cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 1417cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 1418cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 141978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1420cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 142178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 142283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 1423cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1424cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, EVT, 1425cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1426cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1427cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Remember the chain. 1428cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = Lo.getValue(1); 1429cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1430cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExtType == ISD::SEXTLOAD) { 1431cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is obtained by SRA'ing all but one of the bits of the 1432cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // lo part. 143383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned LoSize = Lo.getValueType().getSizeInBits(); 1434cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::SRA, NVT, Lo, 1435cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(LoSize-1, TLI.getShiftAmountTy())); 1436cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (ExtType == ISD::ZEXTLOAD) { 1437cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is just a zero. 1438cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getConstant(0, NVT); 1439cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1440cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(ExtType == ISD::EXTLOAD && "Unknown extload!"); 1441cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is undefined. 1442cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::UNDEF, NVT); 1443cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1444cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 1445cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 1446cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getLoad(NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 1447cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1448cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1449cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 145083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 145183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 1452cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1453cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 145483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1455cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 14560bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1457cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), 1458cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 1459cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1460cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1461cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1462cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1463cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1464cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1465cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1466cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned loads at 1467cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 146883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 146983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 147083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1471cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 1472cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1473cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load both the high bits and maybe some of the low bits. 1474cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 147583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits), 1476cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1477cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1478cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 1479cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 14800bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1481cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load the rest of the low bits. 1482cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, NVT, Ch, Ptr, N->getSrcValue(), 148383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SVOffset+IncrementSize, 148483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 1485cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1486cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1487cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1488cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1489cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1490cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1491cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 149283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 1493cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer low bits from the bottom of Hi to the top of Lo. 1494cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::OR, NVT, Lo, 1495cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getNode(ISD::SHL, NVT, Hi, 1496cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 1497cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy()))); 1498cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Move high bits to the right position in Hi. 1499cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ExtType == ISD::SEXTLOAD ? ISD::SRA : ISD::SRL, NVT, Hi, 150083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 1501cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy())); 1502cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1503cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1504cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1505cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Legalized the chain result - switch anything that used the old chain to 1506cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // use the new one. 1507475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Ch); 1508cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1509cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 151069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Logical(SDNode *N, 1511475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1512475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 151369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 151469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 1515cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(N->getOpcode(), LL.getValueType(), LL, RL); 1516cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(N->getOpcode(), LL.getValueType(), LH, RH); 1517cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1518cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 151905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N, 1520475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 152105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 152205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 152369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1524cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasMULHS = TLI.isOperationLegal(ISD::MULHS, NVT); 1525cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasMULHU = TLI.isOperationLegal(ISD::MULHU, NVT); 1526cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasSMUL_LOHI = TLI.isOperationLegal(ISD::SMUL_LOHI, NVT); 1527cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasUMUL_LOHI = TLI.isOperationLegal(ISD::UMUL_LOHI, NVT); 1528cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU || HasMULHS || HasUMUL_LOHI || HasSMUL_LOHI) { 1529475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 153069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 153169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 153283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned OuterBitSize = VT.getSizeInBits(); 1533e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands unsigned InnerBitSize = NVT.getSizeInBits(); 1534cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned LHSSB = DAG.ComputeNumSignBits(N->getOperand(0)); 1535cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned RHSSB = DAG.ComputeNumSignBits(N->getOperand(1)); 153669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1537e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands APInt HighMask = APInt::getHighBitsSet(OuterBitSize, InnerBitSize); 1538e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (DAG.MaskedValueIsZero(N->getOperand(0), HighMask) && 1539e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands DAG.MaskedValueIsZero(N->getOperand(1), HighMask)) { 1540cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The inputs are both zero-extended. 1541cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1542cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a umul_lohi. 1543cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::UMUL_LOHI, DAG.getVTList(NVT, NVT), LL, RL); 1544ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1545cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1546cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1547cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU) { 1548cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhu+mul. 1549cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1550cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 1551cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1552cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1553cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1554e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (LHSSB > InnerBitSize && RHSSB > InnerBitSize) { 1555cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The input values are both sign-extended. 1556cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasSMUL_LOHI) { 1557cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a smul_lohi. 1558cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::SMUL_LOHI, DAG.getVTList(NVT, NVT), LL, RL); 1559ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1560cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1561cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1562cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHS) { 1563cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhs+mul. 1564cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1565cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::MULHS, NVT, LL, RL); 1566cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1567cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1568cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1569cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1570cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Lo,Hi = umul LHS, RHS. 1571475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UMulLOHI = DAG.getNode(ISD::UMUL_LOHI, 1572cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getVTList(NVT, NVT), LL, RL); 1573cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = UMulLOHI; 1574cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = UMulLOHI.getValue(1); 1575cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 1576cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 1577cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 1578cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 1579cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1580cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1581e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (HasMULHU) { 1582e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1583e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 1584e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 1585e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 1586e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 1587e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 1588e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands return; 1589e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands } 1590cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 159141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1592cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If nothing else, we can make a libcall. 15935ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 15945ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands if (VT == MVT::i32) 15955ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I32; 15965ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 1597e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LC = RTLIB::MUL_I64; 15985ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 15995ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I128; 16005ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported MUL!"); 1601e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands 1602475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1603e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true/*sign irrelevant*/), Lo, Hi); 160441edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1605cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 160669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N, 1607475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 16085ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands MVT VT = N->getValueType(0); 16095ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 16105ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 16115ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands if (VT == MVT::i32) 16125ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I32; 16135ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 16145ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I64; 16155ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 16165ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I128; 16175ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!"); 16185ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 1619475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 16205ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true), Lo, Hi); 1621ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1622ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 162369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N, 1624475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 162583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 162669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 162769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // If we can emit an efficient shift operation, do so now. Check to see if 1628cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the RHS is a constant. 1629cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N->getOperand(1))) 1630f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman return ExpandShiftByConstant(N, CN->getZExtValue(), Lo, Hi); 1631cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1632cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If we can determine that the high bit of the shift is zero or one, even if 1633cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the low bits are variable, emit this shift in an optimized form. 1634cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExpandShiftWithKnownAmountBit(N, Lo, Hi)) 1635cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 163669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1637cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this target supports shift_PARTS, use it. First, map to the _PARTS opc. 1638cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned PartsOpc; 163941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 1640cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SHL_PARTS; 164141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 1642cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRL_PARTS; 164341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 1644cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 1645cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRA_PARTS; 1646cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 164769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1648cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Next check to see if the target supports this SHL_PARTS operation or if it 1649cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // will custom expand it. 165083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1651cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::LegalizeAction Action = TLI.getOperationAction(PartsOpc, NVT); 1652cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if ((Action == TargetLowering::Legal && TLI.isTypeLegal(NVT)) || 1653cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Action == TargetLowering::Custom) { 1654cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Expand the subcomponents. 1655475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH; 165669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 165769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1658475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { LHSL, LHSH, N->getOperand(1) }; 165983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = LHSL.getValueType(); 1660cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(PartsOpc, DAG.getNodeValueTypes(VT, VT), 2, Ops, 3); 1661cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = Lo.getValue(1); 1662cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1663cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 166441edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1665cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Otherwise, emit a libcall. 1666dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 166741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands bool isSigned; 166841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 166941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; /*sign irrelevant*/ 1670dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1671dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I32; 1672dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1673dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I64; 1674dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1675dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I128; 167641edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 167741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; 1678dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1679dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I32; 1680dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1681dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I64; 1682dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1683dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I128; 168441edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 168541edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 168641edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = true; 1687dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1688dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I32; 1689dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1690dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I64; 1691dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1692dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I128; 169341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } 1694dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported shift!"); 169541edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1696475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 169741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, isSigned), Lo, Hi); 169841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1699cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 170005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SIGN_EXTEND(SDNode *N, 1701475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 170205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1703475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 170405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 170505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is sign extension of the input (which degenerates to a copy). 170605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SIGN_EXTEND, NVT, N->getOperand(0)); 170705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part is obtained by SRA'ing all but one of the bits of low part. 170805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned LoSize = NVT.getSizeInBits(); 170905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, Lo, 171005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(LoSize-1, TLI.getShiftAmountTy())); 171105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 171205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 171305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 171405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 171505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1716475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 171705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 171805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 171905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 172005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 172105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 172205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 172305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, Hi.getValueType(), Hi, 172405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 172505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 172605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 172705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 172805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer:: 1729475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandIntRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi) { 173069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 173105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 1732d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 173305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (EVT.bitsLE(Lo.getValueType())) { 173405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the low part if needed. 173505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SIGN_EXTEND_INREG, Lo.getValueType(), Lo, 173605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(1)); 1737d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 173805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part gets the sign extension from the lo-part. This handles 173905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // things like sextinreg V:i64 from i8. 174005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, Hi.getValueType(), Lo, 174105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Hi.getValueType().getSizeInBits()-1, 174205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getShiftAmountTy())); 174305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 174405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. Leave the low part alone, 174505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the high part. 174605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 174705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands EVT.getSizeInBits() - Lo.getValueType().getSizeInBits(); 174805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, Hi.getValueType(), Hi, 174905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 175005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 175105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 1752d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 175305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N, 1754475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 175505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 175605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 175705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 175805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 175905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I32; 176005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 176105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I64; 176205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 176305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I128; 176405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!"); 176505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1766475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 176705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true), Lo, Hi); 1768d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1769d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 177005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_TRUNCATE(SDNode *N, 1771475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 177205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 177305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::TRUNCATE, NVT, N->getOperand(0)); 177405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRL, N->getOperand(0).getValueType(), N->getOperand(0), 177505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), 177605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getShiftAmountTy())); 177705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::TRUNCATE, NVT, Hi); 1778d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1779d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 178005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N, 1781475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 178205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1783d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 178405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 178505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 178605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I32; 178705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 178805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I64; 178905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 179005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I128; 179105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!"); 1792d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 1793475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 179405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, false), Lo, Hi); 1795d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1796cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 179705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N, 1798475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 179905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 180069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 180105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 180205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 180305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I32; 180405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 180505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I64; 180605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 180705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I128; 180805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!"); 1809cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1810475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 181105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, false), Lo, Hi); 1812cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1813cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 181405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N, 1815475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 181683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1817475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 181805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 181905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is zero extension of the input (which degenerates to a copy). 182005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, N->getOperand(0)); 182105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // The high part is just a zero. 182205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 182305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 182405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 182505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 182605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1827475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 182805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 182905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 183005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 183105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 183205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 183305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 183405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getZeroExtendInReg(Hi, MVT::getIntegerVT(ExcessBits)); 18359e255b7df5a0a629920706e086e78ef89bf2f183Dan Gohman } 1836cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1837cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1838cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1839cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 184069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Operand Expansion 1841cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 1842cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 184305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandIntegerOperand - This method is called when the specified operand of 184405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// the specified node is found to need expansion. At this point, all of the 184505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// result types of the node are known to be legal, but other operands of the 184605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// node may need promotion or expansion as well as the specified one. 184705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer::ExpandIntegerOperand(SDNode *N, unsigned OpNo) { 184805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DEBUG(cerr << "Expand integer operand: "; N->dump(&DAG); cerr << "\n"); 1849475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 1850051bb7b07504be9f848f7cce802e62ed24980bc5Duncan Sands 185105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) 185205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands == TargetLowering::Custom) 1853475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Res = TLI.LowerOperation(SDValue(N, OpNo), DAG); 185411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 1855ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == 0) { 185605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 185705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: 185805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #ifndef NDEBUG 185905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands cerr << "ExpandIntegerOperand Op #" << OpNo << ": "; 186005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->dump(&DAG); cerr << "\n"; 186105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #endif 186205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(0 && "Do not know how to expand this operator's operand!"); 186305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands abort(); 186411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 186505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 186605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break; 186705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 186811ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 186905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BR_CC: Res = ExpandIntOp_BR_CC(N); break; 187005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SELECT_CC: Res = ExpandIntOp_SELECT_CC(N); break; 187105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SETCC: Res = ExpandIntOp_SETCC(N); break; 187205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SINT_TO_FP: Res = ExpandIntOp_SINT_TO_FP(N); break; 187305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::STORE: Res = ExpandIntOp_STORE(cast<StoreSDNode>(N), OpNo); 187405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands break; 187505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: Res = ExpandIntOp_TRUNCATE(N); break; 187605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UINT_TO_FP: Res = ExpandIntOp_UINT_TO_FP(N); break; 187705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 187805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 187969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 188005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is null, the sub-method took care of registering results etc. 1881ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 188205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is N, the sub-method updated N in place. Check to see if any 188305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // operands are new, and if so, mark them. 1884ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == N) { 188505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mark N as new and remark N and its operands. This allows us to correctly 188605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // revisit N if it needs another step of expansion and allows us to visit 188705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // any new operands to N. 188805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ReanalyzeNode(N); 188905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 189011ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 1891cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 189205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 189305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Invalid operand expansion"); 189405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1895475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 189605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 1897cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1898cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 189911ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// IntegerExpandSetCCOperands - Expand the operands of a comparison. This code 190011ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// is shared among BR_CC, SELECT_CC, and SETCC handlers. 1901475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::IntegerExpandSetCCOperands(SDValue &NewLHS, 1902475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &NewRHS, 190311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands ISD::CondCode &CCCode) { 1904475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSLo, LHSHi, RHSLo, RHSHi; 190569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewLHS, LHSLo, LHSHi); 190669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewRHS, RHSLo, RHSHi); 190741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 190883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = NewLHS.getValueType(); 190941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1910cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (CCCode == ISD::SETEQ || CCCode == ISD::SETNE) { 191111ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (RHSLo == RHSHi) { 191211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (ConstantSDNode *RHSCST = dyn_cast<ConstantSDNode>(RHSLo)) { 1913cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (RHSCST->isAllOnesValue()) { 1914cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Equality comparison to -1. 1915cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::AND, LHSLo.getValueType(), LHSLo, LHSHi); 1916cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSLo; 1917cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1918cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 191911ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 192011ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 192169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1922cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSLo, RHSLo); 1923cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSHi, RHSHi); 1924cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::OR, NewLHS.getValueType(), NewLHS, NewRHS); 1925cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1926cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1927cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 192869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1929cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this is a comparison of the sign bit, just look at the top part. 1930cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // X > -1, x < 0 1931cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(NewRHS)) 1932002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((CCCode == ISD::SETLT && CST->isNullValue()) || // X < 0 1933cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETGT && CST->isAllOnesValue())) { // X > -1 1934cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = LHSHi; 1935cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSHi; 1936cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1937cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 193869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1939cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // FIXME: This generated code sucks. 1940cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::CondCode LowCC; 1941cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (CCCode) { 1942cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: assert(0 && "Unknown integer setcc!"); 1943cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLT: 1944cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 1945cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGT: 1946cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 1947cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLE: 1948cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 1949cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGE: 1950cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 1951cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 195269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1953cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 1954cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 1955cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 195669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1957cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 1958cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 1959cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::DAGCombinerInfo DagCombineInfo(DAG, false, true, NULL); 1960475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2; 19615b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp1 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, LowCC, 1962cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner false, DagCombineInfo); 1963ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp1.getNode()) 19645b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, LowCC); 19655b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp2 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1966cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode, false, DagCombineInfo); 1967ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp2.getNode()) 19685b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp2 = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1969cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getCondCode(CCCode)); 197069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1971ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp1C = dyn_cast<ConstantSDNode>(Tmp1.getNode()); 1972ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp2C = dyn_cast<ConstantSDNode>(Tmp2.getNode()); 1973002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((Tmp1C && Tmp1C->isNullValue()) || 1974002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->isNullValue() && 1975cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLE || CCCode == ISD::SETGE || 1976cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGE || CCCode == ISD::SETULE)) || 1977002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->getAPIntValue() == 1 && 1978cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLT || CCCode == ISD::SETGT || 1979cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGT || CCCode == ISD::SETULT))) { 1980cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // low part is known false, returns high part. 1981cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LE / GE, if high part is known false, ignore the low part. 1982cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LT / GT, if high part is known true, ignore the low part. 1983cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = Tmp2; 1984475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 1985cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1986cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 198769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 19885b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel NewLHS = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1989cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::SETEQ, false, DagCombineInfo); 1990ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!NewLHS.getNode()) 19915b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel NewLHS = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 199271a2cb25ebc818383dd0f80475bc166f834e8d99Chris Lattner ISD::SETEQ); 1993cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::SELECT, Tmp1.getValueType(), 1994cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS, Tmp1, Tmp2); 1995475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 1996cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1997cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1998475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_BR_CC(SDNode *N) { 1999475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 200005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 200105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 200205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 200305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 200405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 2005ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 200605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 200705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 200805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 200905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 201005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 2011475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 201205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode), NewLHS, NewRHS, 201305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(4)); 201405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 201505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2016475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SELECT_CC(SDNode *N) { 2017475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 201805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 201905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 202005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 202105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 202205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 2023ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 202405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 202505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 202605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 202705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 202805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 2029475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 203005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(2), N->getOperand(3), 203105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 203205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 203305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2034475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SETCC(SDNode *N) { 2035475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 203605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 203705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 203805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 203905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, use it. 2040ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 204105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(NewLHS.getValueType() == N->getValueType(0) && 204205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Unexpected setcc expansion!"); 204305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return NewLHS; 204405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 204505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 204605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, update N to have the operands specified. 2047475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 204805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 204905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 205005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2051475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) { 2052475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 205305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 2054b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), DstVT); 205505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 205605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this SINT_TO_FP!"); 205705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return MakeLibCall(LC, DstVT, &Op, 1, true); 205805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 205905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2060475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo) { 2061ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalStore(N)) 2062ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands return ExpandOp_NormalStore(N, OpNo); 206378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 206478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 2065cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(OpNo == 1 && "Can only expand the stored value so far"); 2066cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 206783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getOperand(1).getValueType(); 206883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 2069475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 2070475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 2071cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 2072cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 2073cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 2074475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 2075cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2076a1ace76c70ae5332d6f33fce5c0c1e2fdb8cca11Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 2077cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 207878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 207969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2080cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getTruncStore(Ch, Lo, Ptr, N->getSrcValue(), SVOffset, 2081b625f2f8960de32bc973092aaee8ac62863006feDan Gohman N->getMemoryVT(), isVolatile, Alignment); 2082cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 2083cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 208469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2085cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2086cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getStore(Ch, Lo, Ptr, N->getSrcValue(), SVOffset, 2087cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 2088cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2089cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 209083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 209183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 2092cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2093cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 209483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 2095cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 20960bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 2097cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getTruncStore(Ch, Hi, Ptr, N->getSrcValue(), 2098cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 2099cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 2100cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 2101cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 2102cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned stores at 2103cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 210469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 2105cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 210683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 210783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 210883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 2109cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 211083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT HiVT = MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits); 2111cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 211283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 2113cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer high bits from the top of Lo to the bottom of Hi. 2114cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::SHL, NVT, Hi, 211583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 2116cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy())); 2117cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::OR, NVT, Hi, 2118cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getNode(ISD::SRL, NVT, Lo, 2119cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 2120cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy()))); 2121cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2122cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2123cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store both the high bits and maybe some of the low bits. 2124cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getTruncStore(Ch, Hi, Ptr, N->getSrcValue(), 2125cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset, HiVT, isVolatile, Alignment); 2126cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2127cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 2128cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 21290bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 2130cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store the lowest ExcessBits bits in the second half. 2131cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getTruncStore(Ch, Lo, Ptr, N->getSrcValue(), 2132cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, 213383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 2134cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 2135cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 2136cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2137cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 213805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2139475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_TRUNCATE(SDNode *N) { 2140475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 214105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 214205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Just truncate the low part of the source. 214305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return DAG.getNode(ISD::TRUNCATE, N->getValueType(0), InL); 214405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 214505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2146475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) { 2147475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 214805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT SrcVT = Op.getValueType(); 214905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 215005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 215105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.getOperationAction(ISD::SINT_TO_FP, SrcVT) == TargetLowering::Custom){ 215205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Do a signed conversion then adjust the result. 2153475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignedConv = DAG.getNode(ISD::SINT_TO_FP, DstVT, Op); 215405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SignedConv = TLI.LowerOperation(SignedConv, DAG); 215505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 215605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The result of the signed conversion needs adjusting if the 'sign bit' of 215705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // the incoming integer was set. To handle this, we dynamically test to see 215805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // if it is set, and, if so, add a fudge factor. 215905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 216005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE32 = 0x4F800000ULL; 216105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE64 = 0x5F800000ULL; 216205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE128 = 0x7F800000ULL; 216305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 216405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt FF(32, 0); 216505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (SrcVT == MVT::i32) 216605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE32); 216705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i64) 216805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE64); 216905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i128) 217005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE128); 217105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else 217205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(false && "Unsupported UINT_TO_FP!"); 217305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 217405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Check whether the sign bit is set. 2175475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 217605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(Op, Lo, Hi); 2177475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignSet = DAG.getSetCC(TLI.getSetCCResultType(Hi), Hi, 2178ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, Hi.getValueType()), 2179ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands ISD::SETLT); 218005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 218105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Build a 64 bit pair (0, FF) in the constant pool, with FF in the lo bits. 2182475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgePtr = DAG.getConstantPool(ConstantInt::get(FF.zext(64)), 218349c18cce976c158e86f54c681dff21bb81640fb8Duncan Sands TLI.getPointerTy()); 218405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 218505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get a pointer to FF if the sign bit was set, or to 0 otherwise. 2186475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0); 2187475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Four = DAG.getIntPtrConstant(4); 218805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.isBigEndian()) std::swap(Zero, Four); 2189475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset = DAG.getNode(ISD::SELECT, Zero.getValueType(), SignSet, 2190ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands Zero, Four); 219187a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman unsigned Alignment = 219287a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman 1 << cast<ConstantPoolSDNode>(FudgePtr)->getAlignment(); 219305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FudgePtr = DAG.getNode(ISD::ADD, TLI.getPointerTy(), FudgePtr, Offset); 219487a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 219505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 219605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Load the value out, extending it from f32 to the destination float type. 219705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // FIXME: Avoid the extend by constructing the right constant pool? 2198475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Fudge = DAG.getExtLoad(ISD::EXTLOAD, DstVT, DAG.getEntryNode(), 219987a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman FudgePtr, NULL, 0, MVT::f32, 220087a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman false, Alignment); 220105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return DAG.getNode(ISD::FADD, DstVT, SignedConv, Fudge); 220205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 220305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 220405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, use a libcall. 2205b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getUINTTOFP(SrcVT, DstVT); 220605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 220705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this UINT_TO_FP!"); 220805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return MakeLibCall(LC, DstVT, &Op, 1, true); 220905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 2210