LegalizeIntegerTypes.cpp revision ba36cb5242eb02b12b277f82b9efe497f7da4d7f
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: 9269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::MUL: Result = PromoteIntRes_SimpleIntBinOp(N); break; 9369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SDIV: 9569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SREM: Result = PromoteIntRes_SDIV(N); break; 9669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 9769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::UDIV: 9869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::UREM: Result = PromoteIntRes_UDIV(N); break; 9969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 10069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 10169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // If Result is null, the sub-method took care of registering the result. 102ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Result.getNode()) 103475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SetPromotedInteger(SDValue(N, ResNo), Result); 10469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 10569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 106475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertSext(SDNode *N) { 10795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Sign-extend the new bits, and continue the assertion. 10895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT OldVT = N->getValueType(0); 109475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 11095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands return DAG.getNode(ISD::AssertSext, Op.getValueType(), 11195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), Op, 11295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getValueType(OldVT)), N->getOperand(1)); 11395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 11495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 115475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_AssertZext(SDNode *N) { 11695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // Zero the new bits, and continue the assertion. 11795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT OldVT = N->getValueType(0); 118475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 11995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands return DAG.getNode(ISD::AssertZext, Op.getValueType(), 12095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getZeroExtendInReg(Op, OldVT), N->getOperand(1)); 12195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 12295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 123475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BIT_CONVERT(SDNode *N) { 124475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InOp = N->getOperand(0); 12569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT InVT = InOp.getValueType(); 12669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NInVT = TLI.getTypeToTransformTo(InVT); 12769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OutVT = TLI.getTypeToTransformTo(N->getValueType(0)); 12869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 12969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (getTypeAction(InVT)) { 13069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: 13169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(false && "Unknown type action!"); 13269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 13369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case Legal: 13469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 13569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case PromoteInteger: 13669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OutVT.getSizeInBits() == NInVT.getSizeInBits()) 13769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The input promotes to the same size. Convert the promoted value. 13869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, OutVT, GetPromotedInteger(InOp)); 13969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 1404fc4fd657d4266059dac3849133a3a351b03d99dDuncan Sands case SoftenFloat: 14169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the integer operand by hand. 1424fc4fd657d4266059dac3849133a3a351b03d99dDuncan Sands return DAG.getNode(ISD::ANY_EXTEND, OutVT, GetSoftenedFloat(InOp)); 14369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandInteger: 14469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ExpandFloat: 14569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands break; 146f4e4629ee8c218f892ad8ae3e182fe40bc160895Duncan Sands case ScalarizeVector: 14769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert the element to an integer and promote it by hand. 14869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::ANY_EXTEND, OutVT, 14969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands BitConvertToInteger(GetScalarizedVector(InOp))); 150f4e4629ee8c218f892ad8ae3e182fe40bc160895Duncan Sands case SplitVector: 15169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // For example, i32 = BIT_CONVERT v2i16 on alpha. Convert the split 15269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // pieces of the input into integers and reassemble in the final type. 153475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 15469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetSplitVector(N->getOperand(0), Lo, Hi); 15569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Lo = BitConvertToInteger(Lo); 15669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Hi = BitConvertToInteger(Hi); 15769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 15869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 15969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 16069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 16169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands InOp = DAG.getNode(ISD::ANY_EXTEND, 16269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT::getIntegerVT(OutVT.getSizeInBits()), 16369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands JoinIntegers(Lo, Hi)); 16469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, OutVT, InOp); 16569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 16669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 16769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Otherwise, lower the bit-convert to a store/load from the stack, then 16869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // promote the load. 169475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = CreateStackStoreLoad(InOp, N->getValueType(0)); 170ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return PromoteIntRes_LOAD(cast<LoadSDNode>(Op.getNode())); 17169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 17269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 173475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BSWAP(SDNode *N) { 174475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 175c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands MVT OVT = N->getValueType(0); 176c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands MVT NVT = Op.getValueType(); 177c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 178c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 179c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands return DAG.getNode(ISD::SRL, NVT, DAG.getNode(ISD::BSWAP, NVT, Op), 180c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 181c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands} 182c07e6e53f757da1a7c79c66ed53f2844de85a77eDuncan Sands 183475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_BUILD_PAIR(SDNode *N) { 184bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The pair element type may be legal, or may not promote to the same type as 185bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // the result, for example i14 = BUILD_PAIR (i7, i7). Handle all cases. 186bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::ANY_EXTEND, 187bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getTypeToTransformTo(N->getValueType(0)), 188bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands JoinIntegers(N->getOperand(0), N->getOperand(1))); 18969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 19069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 191475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_Constant(SDNode *N) { 19269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VT = N->getValueType(0); 193bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Zero extend things like i1, sign extend everything else. It shouldn't 194bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // matter in theory which one we pick, but this tends to give better code? 195bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Opc = VT.isByteSized() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 196475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = DAG.getNode(Opc, TLI.getTypeToTransformTo(VT), 197475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue(N, 0)); 198bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(isa<ConstantSDNode>(Result) && "Didn't constant fold ext?"); 199bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Result; 20069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 20169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 202475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTLZ(SDNode *N) { 203475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 20469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 20569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 20669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Zero extend to the promoted type and do the count there. 20769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Op = DAG.getNode(ISD::CTLZ, NVT, DAG.getZeroExtendInReg(Op, OVT)); 20869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Subtract off the extra leading bits in the bigger type. 20969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::SUB, NVT, Op, 21069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(NVT.getSizeInBits() - 21169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands OVT.getSizeInBits(), NVT)); 21269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 21369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 214475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTPOP(SDNode *N) { 215475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 21669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 21769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 21869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Zero extend to the promoted type and do the count there. 21969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::CTPOP, NVT, DAG.getZeroExtendInReg(Op, OVT)); 22069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 22169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 222475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_CTTZ(SDNode *N) { 223475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 22469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OVT = N->getValueType(0); 22569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NVT = Op.getValueType(); 22669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The count is the same in the promoted type except if the original 22769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // value was zero. This can be handled by setting the bit just off 22869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the top of the original type. 22903dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands APInt TopBit(NVT.getSizeInBits(), 0); 23003dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands TopBit.set(OVT.getSizeInBits()); 23103dc093a2e63d20984c8fd67809fa762f1e31f1aDuncan Sands Op = DAG.getNode(ISD::OR, NVT, Op, DAG.getConstant(TopBit, NVT)); 23269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::CTTZ, NVT, Op); 23369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 23469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 235475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N) { 23669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OldVT = N->getValueType(0); 237475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldVec = N->getOperand(0); 23869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands unsigned OldElts = OldVec.getValueType().getVectorNumElements(); 23969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 24069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OldElts == 1) { 24169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!isTypeLegal(OldVec.getValueType()) && 24269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands "Legal one-element vector of a type needing promotion!"); 24369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // It is tempting to follow GetScalarizedVector by a call to 24469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // GetPromotedInteger, but this would be wrong because the 24569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // scalarized value may not yet have been processed. 24669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::ANY_EXTEND, TLI.getTypeToTransformTo(OldVT), 24769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetScalarizedVector(OldVec)); 24869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 24969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 25069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert to a vector half as long with an element type of twice the width, 25169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // for example <4 x i16> -> <2 x i32>. 25269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!(OldElts & 1) && "Odd length vectors not supported!"); 25369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NewVT = MVT::getIntegerVT(2 * OldVT.getSizeInBits()); 25469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OldVT.isSimple() && NewVT.isSimple()); 25569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 256475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewVec = DAG.getNode(ISD::BIT_CONVERT, 25769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT::getVectorVT(NewVT, OldElts / 2), 25869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands OldVec); 25969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 26069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Extract the element at OldIdx / 2 from the new vector. 261475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldIdx = N->getOperand(1); 262475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewIdx = DAG.getNode(ISD::SRL, OldIdx.getValueType(), OldIdx, 26369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(1, TLI.getShiftAmountTy())); 264475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Elt = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, NewVT, NewVec, NewIdx); 26569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 26669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Select the appropriate half of the element: Lo if OldIdx was even, 26769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Hi if it was odd. 268475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Elt; 269475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = DAG.getNode(ISD::SRL, NewVT, Elt, 27069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(OldVT.getSizeInBits(), 27169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands TLI.getShiftAmountTy())); 27269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 27369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 27469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 275475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Odd = DAG.getNode(ISD::AND, OldIdx.getValueType(), OldIdx, 27669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getConstant(1, TLI.getShiftAmountTy())); 27769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::SELECT, NewVT, Odd, Hi, Lo); 27869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 27969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 280475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_FP_TO_XINT(SDNode *N) { 281bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned NewOpc = N->getOpcode(); 282bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 283d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 284bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If we're promoting a UINT to a larger size, check to see if the new node 285bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // will be legal. If it isn't, check to see if FP_TO_SINT is legal, since 286bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // we can use that instead. This allows us to generate better code for 287bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // FP_TO_UINT for small destination sizes on targets where FP_TO_UINT is not 288bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal, such as PowerPC. 289bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::FP_TO_UINT) { 290bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (!TLI.isOperationLegal(ISD::FP_TO_UINT, NVT) && 291bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands (TLI.isOperationLegal(ISD::FP_TO_SINT, NVT) || 292bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getOperationAction(ISD::FP_TO_SINT, NVT)==TargetLowering::Custom)) 293bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands NewOpc = ISD::FP_TO_SINT; 294bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 295d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 296bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(NewOpc, NVT, N->getOperand(0)); 297d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands} 298d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 299475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_INT_EXTEND(SDNode *N) { 300bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 301be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 302bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (getTypeAction(N->getOperand(0).getValueType()) == PromoteInteger) { 303475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 304bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType().getSizeInBits() <= NVT.getSizeInBits() && 305bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Extension doesn't make sense!"); 306126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 307bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result and operand types are the same after promotion, simplify 308bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // to an in-register extension. 309bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (NVT == Res.getValueType()) { 310bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The high bits are not guaranteed to be anything. Insert an extend. 311bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::SIGN_EXTEND) 312bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Res, 313bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(N->getOperand(0).getValueType())); 314bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::ZERO_EXTEND) 315bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getZeroExtendInReg(Res, N->getOperand(0).getValueType()); 316bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(N->getOpcode() == ISD::ANY_EXTEND && "Unknown integer extension!"); 317bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 318126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands } 31969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 32069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 321bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Otherwise, just extend the original operand all the way to the larger type. 322bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), NVT, N->getOperand(0)); 323bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 32469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 325475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_LOAD(LoadSDNode *N) { 326bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 327bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 328bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::LoadExtType ExtType = 329bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::isNON_EXTLoad(N) ? ISD::EXTLOAD : N->getExtensionType(); 330475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = DAG.getExtLoad(ExtType, NVT, N->getChain(), N->getBasePtr(), 331bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getSrcValue(), N->getSrcValueOffset(), 332bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getMemoryVT(), N->isVolatile(), 333bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getAlignment()); 33469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 335bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 336bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 337475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 338bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 33969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 34069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 341475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SDIV(SDNode *N) { 342bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Sign extend the input. 343475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 344475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 345bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 346bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands LHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, LHS.getValueType(), LHS, 347bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(VT)); 348bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands RHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, RHS.getValueType(), RHS, 349bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(VT)); 350bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 351bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 35269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 35369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 354475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT(SDNode *N) { 355475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(1)); 356475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(2)); 357bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SELECT, LHS.getValueType(), N->getOperand(0),LHS,RHS); 35869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 35969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 360475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT_CC(SDNode *N) { 361475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(2)); 362475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(3)); 363bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SELECT_CC, LHS.getValueType(), N->getOperand(0), 364bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 36569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 36669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 367475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SETCC(SDNode *N) { 368bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(isTypeLegal(TLI.getSetCCResultType(N->getOperand(0))) 369bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands && "SetCC type is not legal??"); 370bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(N->getOperand(0)), 371bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(0), N->getOperand(1), N->getOperand(2)); 37269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 37369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 374475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SHL(SDNode *N) { 375bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SHL, TLI.getTypeToTransformTo(N->getValueType(0)), 376bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands GetPromotedInteger(N->getOperand(0)), N->getOperand(1)); 37769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 37869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 379475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N) { 380475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 3818d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), Op, 3828d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands N->getOperand(1)); 3838d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands} 3848d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands 385475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SimpleIntBinOp(SDNode *N) { 386bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input may have strange things in the top bits of the registers, but 387bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // these operations don't care. They may have weird bits going out, but 388bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that too is okay if they are integer operations. 389475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 390475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 391bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 39269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 39369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 394475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRA(SDNode *N) { 395bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly sign extended. 396bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 397bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 398475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 399bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Res, DAG.getValueType(VT)); 400bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SRA, NVT, Res, N->getOperand(1)); 401bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 40269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 403475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRL(SDNode *N) { 404bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly zero extended. 405bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 406bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 407475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = ZExtPromotedInteger(N->getOperand(0)); 408bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SRL, NVT, Res, N->getOperand(1)); 40969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 41069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 411475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_TRUNCATE(SDNode *N) { 412475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res; 41369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 414bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (getTypeAction(N->getOperand(0).getValueType())) { 415bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands default: assert(0 && "Unknown type action!"); 416bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case Legal: 417bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ExpandInteger: 418bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = N->getOperand(0); 419bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 420bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case PromoteInteger: 421bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = GetPromotedInteger(N->getOperand(0)); 422bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 423bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 424bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 425bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 426bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType().getSizeInBits() >= NVT.getSizeInBits() && 427bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Truncation doesn't make sense!"); 428bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (Res.getValueType() == NVT) 429bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 430bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 431bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate to NVT instead of VT 432bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::TRUNCATE, NVT, Res); 43369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 43469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 435475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UDIV(SDNode *N) { 436bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Zero extend the input. 437475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 438475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 439bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 440bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands LHS = DAG.getZeroExtendInReg(LHS, VT); 441bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands RHS = DAG.getZeroExtendInReg(RHS, VT); 44269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 443bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 444bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 44569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 446475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UNDEF(SDNode *N) { 447bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::UNDEF, TLI.getTypeToTransformTo(N->getValueType(0))); 44869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 44969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 450475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_VAARG(SDNode *N) { 451475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = N->getOperand(0); // Get the chain. 452475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getOperand(1); // Get the pointer. 453bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 45469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 455bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands const Value *V = cast<SrcValueSDNode>(N->getOperand(2))->getValue(); 456475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), Chain, Ptr, V, 0); 45769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 458bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Increment the arg pointer, VAList, to the next vaarg 459bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // FIXME: should the ABI size be used for the increment? Think of 460bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // x86 long double (10 bytes long, but aligned on 4 or 8 bytes) or 461bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // integers of unusual size (such MVT::i1, which gives an increment 462bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // of zero here!). 463bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Increment = VT.getSizeInBits() / 8; 464475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp = DAG.getNode(ISD::ADD, TLI.getPointerTy(), VAList, 465bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getConstant(Increment, TLI.getPointerTy())); 46669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 467bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Store the incremented VAList to the pointer. 468bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Tmp = DAG.getStore(VAList.getValue(1), Tmp, Ptr, V, 0); 46969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 470bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Load the actual argument out of the arg pointer VAList. 471bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Tmp = DAG.getExtLoad(ISD::EXTLOAD, TLI.getTypeToTransformTo(VT), Tmp, 472bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands VAList, NULL, 0, VT); 47369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 474bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 475bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 476475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Tmp.getValue(1)); 477bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Tmp; 47869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 47969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 4807fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 481bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 482bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands// Integer Operand Promotion 483bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 4847fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 485bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// PromoteIntegerOperand - This method is called when the specified operand of 486bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// the specified node is found to need promotion. At this point, all of the 487bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// result types of the node are known to be legal, but other operands of the 488bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// node may need promotion or expansion as well as the specified one. 489bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sandsbool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) { 490bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DEBUG(cerr << "Promote integer operand: "; N->dump(&DAG); cerr << "\n"); 491475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 4927fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 493bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) 494bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands == TargetLowering::Custom) 495475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Res = TLI.LowerOperation(SDValue(N, OpNo), DAG); 49669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 497ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == 0) { 498bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (N->getOpcode()) { 499bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands default: 500bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #ifndef NDEBUG 501bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands cerr << "PromoteIntegerOperand Op #" << OpNo << ": "; 502bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->dump(&DAG); cerr << "\n"; 503bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #endif 504bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(0 && "Do not know how to promote this operator's operand!"); 505bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands abort(); 50669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 507bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::ANY_EXTEND: Res = PromoteIntOp_ANY_EXTEND(N); break; 508bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BR_CC: Res = PromoteIntOp_BR_CC(N, OpNo); break; 509bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BRCOND: Res = PromoteIntOp_BRCOND(N, OpNo); break; 510bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BUILD_PAIR: Res = PromoteIntOp_BUILD_PAIR(N); break; 511bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BUILD_VECTOR: Res = PromoteIntOp_BUILD_VECTOR(N); break; 512bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::FP_EXTEND: Res = PromoteIntOp_FP_EXTEND(N); break; 513bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::FP_ROUND: Res = PromoteIntOp_FP_ROUND(N); break; 514bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::INSERT_VECTOR_ELT: 515bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = PromoteIntOp_INSERT_VECTOR_ELT(N, OpNo);break; 516bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::MEMBARRIER: Res = PromoteIntOp_MEMBARRIER(N); break; 517bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT: Res = PromoteIntOp_SELECT(N, OpNo); break; 518bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT_CC: Res = PromoteIntOp_SELECT_CC(N, OpNo); break; 519bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SETCC: Res = PromoteIntOp_SETCC(N, OpNo); break; 520bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SIGN_EXTEND: Res = PromoteIntOp_SIGN_EXTEND(N); break; 521bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::STORE: Res = PromoteIntOp_STORE(cast<StoreSDNode>(N), 522bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands OpNo); break; 523bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::TRUNCATE: Res = PromoteIntOp_TRUNCATE(N); break; 524bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::ZERO_EXTEND: Res = PromoteIntOp_ZERO_EXTEND(N); break; 525bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 526bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SINT_TO_FP: 527bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::UINT_TO_FP: Res = PromoteIntOp_INT_TO_FP(N); break; 528bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 529bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 530bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 531bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is null, the sub-method took care of registering results etc. 532ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 533bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is N, the sub-method updated N in place. 534ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == N) { 535bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Mark N as new and remark N and its operands. This allows us to correctly 536bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // revisit N if it needs another step of promotion and allows us to visit 537bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // any new operands to N. 538bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ReanalyzeNode(N); 539bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return true; 540bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 541bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 542bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 543bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Invalid operand expansion"); 544bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 545475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 546bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return false; 54769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 54869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 54969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// PromoteSetCCOperands - Promote the operands of a comparison. This code is 55069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// shared among BR_CC, SELECT_CC, and SETCC handlers. 551475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::PromoteSetCCOperands(SDValue &NewLHS,SDValue &NewRHS, 55269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands ISD::CondCode CCCode) { 55369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VT = NewLHS.getValueType(); 55469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 55569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Get the promoted values. 55669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = GetPromotedInteger(NewLHS); 55769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = GetPromotedInteger(NewRHS); 55869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 55969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Otherwise, we have to insert explicit sign or zero extends. Note 56069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that we could insert sign extends for ALL conditions, but zero extend 56169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // is cheaper on many machines (an AND instead of two shifts), so prefer 56269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // it. 56369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (CCCode) { 56469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: assert(0 && "Unknown integer comparison!"); 56569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETEQ: 56669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETNE: 56769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGE: 56869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGT: 56969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULE: 57069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULT: 57169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // ALL of these operations will work if we either sign or zero extend 57269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the operands (including the unsigned comparisons!). Zero extend is 57369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // usually a simpler/cheaper operation, so prefer it. 57469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = DAG.getZeroExtendInReg(NewLHS, VT); 57569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = DAG.getZeroExtendInReg(NewRHS, VT); 57611ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 57769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGE: 57869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGT: 57969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLT: 58069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLE: 58169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, NewLHS.getValueType(), NewLHS, 58269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getValueType(VT)); 58369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, NewRHS.getValueType(), NewRHS, 58469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getValueType(VT)); 58511ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 58669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 58769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 58869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 589475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ANY_EXTEND(SDNode *N) { 590475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 591bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 592bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 59369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 594475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo) { 595bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 2 && "Don't know how to promote this operand!"); 59669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 597475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(2); 598475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(3); 599bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(1))->get()); 60069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 601bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0), CC (#1) and basic block destination (Op#4) are always 602bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal types. 603475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 604bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 605bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 606bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 607475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo) { 608bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 1 && "only know how to promote condition"); 609475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Cond = GetPromotedInteger(N->getOperand(1)); // Promote condition. 610bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 611bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The top bits of the promoted condition are not necessarily zero, ensure 612bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that the value is properly zero extended. 613bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned BitWidth = Cond.getValueSizeInBits(); 614bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (!DAG.MaskedValueIsZero(Cond, 615bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands APInt::getHighBitsSet(BitWidth, BitWidth-1))) 616bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Cond = DAG.getZeroExtendInReg(Cond, MVT::i1); 617bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 618bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0) and basic block destination (Op#2) are always legal types. 619475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Cond, 620bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(2)); 621bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 622bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 623475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_PAIR(SDNode *N) { 624bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Since the result type is legal, the operands must promote to it. 625bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT OVT = N->getOperand(0).getValueType(); 626475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = GetPromotedInteger(N->getOperand(0)); 627475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = GetPromotedInteger(N->getOperand(1)); 628bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Lo.getValueType() == N->getValueType(0) && "Operand over promoted?"); 629bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 630bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Lo = DAG.getZeroExtendInReg(Lo, OVT); 631bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Hi = DAG.getNode(ISD::SHL, N->getValueType(0), Hi, 632bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getConstant(OVT.getSizeInBits(), 633bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getShiftAmountTy())); 634bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::OR, N->getValueType(0), Lo, Hi); 63569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 63669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 637475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_VECTOR(SDNode *N) { 63869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The vector type is legal but the element type is not. This implies 63969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that the vector is a power-of-two in length and that the element 64069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // type does not have a strange size (eg: it is not i1). 64169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VecVT = N->getValueType(0); 64269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands unsigned NumElts = VecVT.getVectorNumElements(); 64369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!(NumElts & 1) && "Legal vector of one illegal element?"); 64469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 64569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Build a vector of half the length out of elements of twice the bitwidth. 64669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // For example <4 x i16> -> <2 x i32>. 64769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OldVT = N->getOperand(0).getValueType(); 64869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NewVT = MVT::getIntegerVT(2 * OldVT.getSizeInBits()); 64969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OldVT.isSimple() && NewVT.isSimple()); 65069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 651475871a144eb604ddaf37503397ba0941442e5fbDan Gohman std::vector<SDValue> NewElts; 65269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewElts.reserve(NumElts/2); 65369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 65469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 0; i < NumElts; i += 2) { 65569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Combine two successive elements into one promoted element. 656475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = N->getOperand(i); 657475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = N->getOperand(i+1); 65869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 65969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 66069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewElts.push_back(JoinIntegers(Lo, Hi)); 66169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 66269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 663475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewVec = DAG.getNode(ISD::BUILD_VECTOR, 66469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT::getVectorVT(NewVT, NewElts.size()), 66569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands &NewElts[0], NewElts.size()); 66669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 66769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert the new vector to the old vector type. 66869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, VecVT, NewVec); 66969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 67069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 671475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_FP_EXTEND(SDNode *N) { 672475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 673bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::FP_EXTEND, N->getValueType(0), Op); 674bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 675bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 676475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_FP_ROUND(SDNode *N) { 677475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 678bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::FP_ROUND, N->getValueType(0), Op, 679bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getIntPtrConstant(0)); 680bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 681bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 682475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, 683475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned OpNo) { 68469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OpNo == 1) { 68569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the inserted value. This is valid because the type does not 68669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // have to match the vector element type. 68769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 68869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Check that any extra bits introduced will be truncated away. 68969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(N->getOperand(1).getValueType().getSizeInBits() >= 69069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getValueType(0).getVectorElementType().getSizeInBits() && 69169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands "Type of inserted value narrower than vector element type!"); 692475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 69369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetPromotedInteger(N->getOperand(1)), 69469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(2)); 69569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 69669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 69769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OpNo == 2 && "Different operand and result vector types?"); 69869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 69969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the index. 700475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Idx = N->getOperand(2); 70169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Idx = DAG.getZeroExtendInReg(GetPromotedInteger(Idx), Idx.getValueType()); 702475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 70369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(1), Idx); 70469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 70569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 706475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INT_TO_FP(SDNode *N) { 707475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue In = GetPromotedInteger(N->getOperand(0)); 708bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT OpVT = N->getOperand(0).getValueType(); 709bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::UINT_TO_FP) 710bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In = DAG.getZeroExtendInReg(In, OpVT); 711bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands else 712bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In = DAG.getNode(ISD::SIGN_EXTEND_INREG, In.getValueType(), 713bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In, DAG.getValueType(OpVT)); 714bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 715475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), In); 716bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 717bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 718475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_MEMBARRIER(SDNode *N) { 719475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewOps[6]; 72069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[0] = N->getOperand(0); 72169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 1; i < array_lengthof(NewOps); ++i) { 722475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag = GetPromotedInteger(N->getOperand(i)); 72369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[i] = DAG.getZeroExtendInReg(Flag, MVT::i1); 72469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 725475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue (N, 0), NewOps, 72669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands array_lengthof(NewOps)); 72769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 72869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 729475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT(SDNode *N, unsigned OpNo) { 730bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Only know how to promote condition"); 731475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Cond = GetPromotedInteger(N->getOperand(0)); // Promote condition. 732bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 733bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The top bits of the promoted condition are not necessarily zero, ensure 734bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that the value is properly zero extended. 735bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned BitWidth = Cond.getValueSizeInBits(); 736bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (!DAG.MaskedValueIsZero(Cond, 737bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands APInt::getHighBitsSet(BitWidth, BitWidth-1))) 738bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Cond = DAG.getZeroExtendInReg(Cond, MVT::i1); 739bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 740bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0) and basic block destination (Op#2) are always legal types. 741475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), Cond, N->getOperand(1), 742bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(2)); 743bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 744bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 745475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo) { 746bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 747bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 748475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 749475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 750bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(4))->get()); 751bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 752bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#4) and the possible return values (#2 and #3) have legal types. 753475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2), 754bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(3), N->getOperand(4)); 755bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 756bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 757475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SETCC(SDNode *N, unsigned OpNo) { 758bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 759bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 760475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 761475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 762bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(2))->get()); 763bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 764bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#2) is always legal. 765475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2)); 766bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 767bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 768475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SIGN_EXTEND(SDNode *N) { 769475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 770bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op = DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 771bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), 772bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op, DAG.getValueType(N->getOperand(0).getValueType())); 773bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 774bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 775475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo){ 776bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 777475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(), Ptr = N->getBasePtr(); 778bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands int SVOffset = N->getSrcValueOffset(); 779bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Alignment = N->getAlignment(); 780bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands bool isVolatile = N->isVolatile(); 781bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 782475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = GetPromotedInteger(N->getValue()); // Get promoted value. 783bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 784bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(!N->isTruncatingStore() && "Cannot promote this store operand!"); 785bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 786bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate the value and store the result. 787bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getTruncStore(Ch, Val, Ptr, N->getSrcValue(), 788bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands SVOffset, N->getMemoryVT(), 789bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands isVolatile, Alignment); 790bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 791bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 792475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_TRUNCATE(SDNode *N) { 793475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 794bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::TRUNCATE, N->getValueType(0), Op); 795bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 796bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 797475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ZERO_EXTEND(SDNode *N) { 798475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 799bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op = DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 800bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getZeroExtendInReg(Op, N->getOperand(0).getValueType()); 801bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 802bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 80369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 80469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 80569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Result Expansion 80669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 80769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 80869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// ExpandIntegerResult - This method is called when the specified result of the 809cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// specified node is found to need expansion. At this point, the node may also 810cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// have invalid operands or may have other results that need promotion, we just 811cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// know that (at least) one result needs expansion. 81269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) { 81369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DEBUG(cerr << "Expand integer result: "; N->dump(&DAG); cerr << "\n"); 814475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 815475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Lo = Hi = SDValue(); 816cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 817cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // See if the target wants to custom expand this node. 818126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getValueType(ResNo)) == 819126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands TargetLowering::Custom) { 820cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If the target wants to, allow it to lower this itself. 821126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (SDNode *P = TLI.ReplaceNodeResults(N, DAG)) { 822cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Everything that once used N now uses P. We are guaranteed that the 823cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // result value types of N and the result value types of P match. 824cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ReplaceNodeWith(N, P); 825cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 826cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 827cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 828cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 829cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (N->getOpcode()) { 830cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: 831cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#ifndef NDEBUG 83269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands cerr << "ExpandIntegerResult #" << ResNo << ": "; 833cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner N->dump(&DAG); cerr << "\n"; 834cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#endif 83578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(0 && "Do not know how to expand the result of this operator!"); 836cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner abort(); 83769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 83878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break; 83978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 84078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 84178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 84278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 84378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break; 84478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 8454a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 84678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 84778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 84869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ANY_EXTEND: ExpandIntRes_ANY_EXTEND(N, Lo, Hi); break; 84995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands case ISD::AssertSext: ExpandIntRes_AssertSext(N, Lo, Hi); break; 85069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AssertZext: ExpandIntRes_AssertZext(N, Lo, Hi); break; 85105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BSWAP: ExpandIntRes_BSWAP(N, Lo, Hi); break; 85205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::Constant: ExpandIntRes_Constant(N, Lo, Hi); break; 85305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTLZ: ExpandIntRes_CTLZ(N, Lo, Hi); break; 85405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTPOP: ExpandIntRes_CTPOP(N, Lo, Hi); break; 85505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTTZ: ExpandIntRes_CTTZ(N, Lo, Hi); break; 85669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_SINT: ExpandIntRes_FP_TO_SINT(N, Lo, Hi); break; 85769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_UINT: ExpandIntRes_FP_TO_UINT(N, Lo, Hi); break; 85869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::LOAD: ExpandIntRes_LOAD(cast<LoadSDNode>(N), Lo, Hi); break; 85905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::MUL: ExpandIntRes_MUL(N, Lo, Hi); break; 86005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SDIV: ExpandIntRes_SDIV(N, Lo, Hi); break; 86105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND: ExpandIntRes_SIGN_EXTEND(N, Lo, Hi); break; 86205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND_INREG: ExpandIntRes_SIGN_EXTEND_INREG(N, Lo, Hi); break; 86305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SREM: ExpandIntRes_SREM(N, Lo, Hi); break; 86405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: ExpandIntRes_TRUNCATE(N, Lo, Hi); break; 86505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UDIV: ExpandIntRes_UDIV(N, Lo, Hi); break; 86605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UREM: ExpandIntRes_UREM(N, Lo, Hi); break; 86705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::ZERO_EXTEND: ExpandIntRes_ZERO_EXTEND(N, Lo, Hi); break; 86869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 869cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::AND: 870cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::OR: 87105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::XOR: ExpandIntRes_Logical(N, Lo, Hi); break; 87205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 873cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADD: 87405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUB: ExpandIntRes_ADDSUB(N, Lo, Hi); break; 87505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 876cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDC: 87705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBC: ExpandIntRes_ADDSUBC(N, Lo, Hi); break; 87805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 879cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDE: 88005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBE: ExpandIntRes_ADDSUBE(N, Lo, Hi); break; 88105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 882cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SHL: 883cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SRA: 88405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: ExpandIntRes_Shift(N, Lo, Hi); break; 885cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 886d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 887cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If Lo/Hi is null, the sub-method took care of registering results etc. 888ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Lo.getNode()) 889475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SetExpandedInteger(SDValue(N, ResNo), Lo, Hi); 890cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 891cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 89205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftByConstant - N is a shift by a value that needs to be expanded, 89305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// and the shift amount is a constant 'Amt'. Expand the operation. 89405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandShiftByConstant(SDNode *N, unsigned Amt, 895475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 89605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the incoming operand to be shifted, so that we have its parts 897475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 89805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 899cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 90005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = InL.getValueType(); 90105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned VTBits = N->getValueType(0).getSizeInBits(); 90205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 90305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = N->getOperand(1).getValueType(); 904cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 90505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SHL) { 90605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 90705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = Hi = DAG.getConstant(0, NVT); 90805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 90905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 91005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Amt-NVTBits,ShTy)); 91105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 91205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 91305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = InL; 91405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == 1) { 91505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Emit this X << 1 as X+X. 91605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 917475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { InL, InL }; 91805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 919475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { InH, InH, Lo.getValue(1) }; 92005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 92105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 92205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Amt, ShTy)); 92305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 92405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 92505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 92605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 92705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 92805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 92905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 930cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 931cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 93205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SRL) { 93305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 93405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 93505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 93605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 93705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Amt-NVTBits,ShTy)); 93805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 93905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 94005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 94105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 94205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 94305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::OR, NVT, 94405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 94505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 94605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 94705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 94805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Amt, ShTy)); 94905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 95005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 951cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 952d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 95305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 95405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 95505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = Lo = DAG.getNode(ISD::SRA, NVT, InH, 95605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 95705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 95805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRA, NVT, InH, 95905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt-NVTBits, ShTy)); 96005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, 96105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 96205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 96305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 96405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, 96505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 966d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } else { 96705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::OR, NVT, 96805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 96905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 97005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 97105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 97205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, DAG.getConstant(Amt, ShTy)); 973d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } 974d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands} 975d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 97605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftWithKnownAmountBit - Try to determine whether we can simplify 97705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// this shift based on knowledge of the high bit of the shift amount. If we 97805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// can tell this, we know that it is >= 32 or < 32, without knowing the actual 97905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// shift amount. 98005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer:: 981475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi) { 982475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt = N->getOperand(1); 98383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 98405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = Amt.getValueType(); 98505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ShBits = ShTy.getSizeInBits(); 98605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 98705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(isPowerOf2_32(NVTBits) && 98805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Expanded integer type size not a power of two!"); 989cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 99005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt HighBitMask = APInt::getHighBitsSet(ShBits, ShBits - Log2_32(NVTBits)); 99105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt KnownZero, KnownOne; 99205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.ComputeMaskedBits(N->getOperand(1), HighBitMask, KnownZero, KnownOne); 993cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 99405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we don't know anything about the high bits, exit. 99505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (((KnownZero|KnownOne) & HighBitMask) == 0) 99605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 997cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 99805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get the incoming operand to be shifted. 999475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 100005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 1001be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 100205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that any of the high bits of the shift amount are one, then we 100305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 100405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (KnownOne.intersects(HighBitMask)) { 100505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mask out the high bit, which we know is set. 100605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt = DAG.getNode(ISD::AND, ShTy, Amt, 100705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(~HighBitMask, ShTy)); 100805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 100905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 101005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: assert(0 && "Unknown shift"); 101105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: 101205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); // Low part is zero. 101305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SHL, NVT, InL, Amt); // High part from Lo part. 101405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 101505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 101605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // Hi part is zero. 101705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRL, NVT, InH, Amt); // Lo part from Hi part. 101805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 101905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: 102005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, // Sign extend high part. 102105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 102205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRA, NVT, InH, Amt); // Lo part from Hi part. 102305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 102405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 102505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 102605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 102705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that all of the high bits of the shift amount are zero, then we 102805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 102905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if ((KnownZero & HighBitMask) == HighBitMask) { 103005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Compute 32-amt. 1031475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt2 = DAG.getNode(ISD::SUB, ShTy, 103205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits, ShTy), 103305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt); 103405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned Op1, Op2; 103505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 103605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: assert(0 && "Unknown shift"); 103705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: Op1 = ISD::SHL; Op2 = ISD::SRL; break; 103805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 103905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: Op1 = ISD::SRL; Op2 = ISD::SHL; break; 104005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 104105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 104205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), NVT, InL, Amt); 104305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 104405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op1, NVT, InH, Amt), 104505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op2, NVT, InL, Amt2)); 104605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 104705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 104805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 104905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 105005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 105105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 105205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUB(SDNode *N, 1053475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 105405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1055475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 105605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 105705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 105805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1059475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1060475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 106105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 106205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::ADD) { 106305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 106405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 106505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 106605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 106705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SUBC, VTList, LoOps, 2); 106805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 106905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SUBE, VTList, HiOps, 3); 107005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 107105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 107205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 107305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBC(SDNode *N, 1074475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 107505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1076475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 107705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 107805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 107905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1080475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1081475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 108205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 108305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::ADDC) { 108405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 108505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 108605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 108705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 108805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SUBC, VTList, LoOps, 2); 108905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 109005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SUBE, VTList, HiOps, 3); 109105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 109205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 109305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Legalized the flag result - switch anything that used the old flag to 109405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // use the new one. 1095475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 109605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 109705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 109805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBE(SDNode *N, 1099475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 110005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1101475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 110205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 110305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 110405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1105475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[3] = { LHSL, RHSL, N->getOperand(2) }; 1106475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 110705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 110805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), VTList, LoOps, 3); 110905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 111005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(N->getOpcode(), VTList, HiOps, 3); 111105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 111205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Legalized the flag result - switch anything that used the old flag to 111305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // use the new one. 1114475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 111505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 111605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 111705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ANY_EXTEND(SDNode *N, 1118475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 111905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1120475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 112105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 112205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is any extension of the input (which degenerates to a copy). 112305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ANY_EXTEND, NVT, Op); 112405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::UNDEF, NVT); // The high part is undefined. 112505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 112605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 112705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 112805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 112905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1130475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 113105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 113205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 113305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 113405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 113505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 113605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 113705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 113895db39a9de48f69f4d764335b492b83a698c7854Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertSext(SDNode *N, 1139475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 114095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 114195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT NVT = Lo.getValueType(); 114295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 114395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned NVTBits = NVT.getSizeInBits(); 114495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned EVTBits = EVT.getSizeInBits(); 114595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 114695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands if (NVTBits < EVTBits) { 114795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Hi = DAG.getNode(ISD::AssertSext, NVT, Hi, 114895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 114995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } else { 115095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Lo = DAG.getNode(ISD::AssertSext, NVT, Lo, DAG.getValueType(EVT)); 115195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // The high part replicates the sign bit of Lo, make it explicit. 115295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Hi = DAG.getNode(ISD::SRA, NVT, Lo, 115395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getConstant(NVTBits-1, TLI.getShiftAmountTy())); 115495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } 115595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 115695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 115705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertZext(SDNode *N, 1158475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 115905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 116005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 116105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 116205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 116305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned EVTBits = EVT.getSizeInBits(); 116405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 116505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (NVTBits < EVTBits) { 116605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::AssertZext, NVT, Hi, 116705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 116805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 116905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::AssertZext, NVT, Lo, DAG.getValueType(EVT)); 117005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part must be zero, make it explicit. 117105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 117205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 117305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 117405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 117505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_BSWAP(SDNode *N, 1176475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 117705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Hi, Lo); // Note swapped operands. 117805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::BSWAP, Lo.getValueType(), Lo); 117905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::BSWAP, Hi.getValueType(), Hi); 118005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 118105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 118205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Constant(SDNode *N, 1183475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 118405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 118505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NBitWidth = NVT.getSizeInBits(); 118605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const APInt &Cst = cast<ConstantSDNode>(N)->getAPIntValue(); 118705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(APInt(Cst).trunc(NBitWidth), NVT); 118805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(Cst.lshr(NBitWidth).trunc(NBitWidth), NVT); 118905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 119005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 119105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTLZ(SDNode *N, 1192475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 119305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctlz (HiLo) -> Hi != 0 ? ctlz(Hi) : (ctlz(Lo)+32) 119405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 119505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 119605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1197475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiNotZero = DAG.getSetCC(TLI.getSetCCResultType(Hi), Hi, 119805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 119905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1200475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoLZ = DAG.getNode(ISD::CTLZ, NVT, Lo); 1201475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiLZ = DAG.getNode(ISD::CTLZ, NVT, Hi); 120205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 120305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SELECT, NVT, HiNotZero, HiLZ, 120405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::ADD, NVT, LoLZ, 120505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 120605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 120705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 120805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 120905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTPOP(SDNode *N, 1210475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 121105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctpop(HiLo) -> ctpop(Hi)+ctpop(Lo) 121205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 121305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 121405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADD, NVT, DAG.getNode(ISD::CTPOP, NVT, Lo), 121505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::CTPOP, NVT, Hi)); 121605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 121705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 121805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 121905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTTZ(SDNode *N, 1220475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 122105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // cttz (HiLo) -> Lo != 0 ? cttz(Lo) : (cttz(Hi)+32) 122205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 122305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 122405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1225475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoNotZero = DAG.getSetCC(TLI.getSetCCResultType(Lo), Lo, 122605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 122705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1228475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoLZ = DAG.getNode(ISD::CTTZ, NVT, Lo); 1229475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiLZ = DAG.getNode(ISD::CTTZ, NVT, Hi); 123005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 123105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SELECT, NVT, LoNotZero, LoLZ, 123205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::ADD, NVT, HiLZ, 123305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 123405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 123505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 123605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1237475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_SINT(SDNode *N, SDValue &Lo, 1238475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 123905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1240475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1241b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOSINT(Op.getValueType(), VT); 1242be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-sint conversion!"); 124341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, &Op, 1, true/*sign irrelevant*/), Lo, Hi); 1244ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1245ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 1246475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo, 1247475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 124883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 1249475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1250b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOUINT(Op.getValueType(), VT); 1251be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-uint conversion!"); 125241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, &Op, 1, false/*sign irrelevant*/), Lo, Hi); 1253ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1254ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 125569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_LOAD(LoadSDNode *N, 1256475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1257ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalLoad(N)) { 1258ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands ExpandRes_NormalLoad(N, Lo, Hi); 125978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 126078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 126178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 126278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 126378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 126483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 126583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1266475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 1267475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 1268cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::LoadExtType ExtType = N->getExtensionType(); 1269cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 1270cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 1271cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 1272cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 127378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1274cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 127578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 127683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 1277cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1278cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, EVT, 1279cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1280cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1281cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Remember the chain. 1282cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = Lo.getValue(1); 1283cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1284cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExtType == ISD::SEXTLOAD) { 1285cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is obtained by SRA'ing all but one of the bits of the 1286cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // lo part. 128783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned LoSize = Lo.getValueType().getSizeInBits(); 1288cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::SRA, NVT, Lo, 1289cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(LoSize-1, TLI.getShiftAmountTy())); 1290cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (ExtType == ISD::ZEXTLOAD) { 1291cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is just a zero. 1292cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getConstant(0, NVT); 1293cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1294cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(ExtType == ISD::EXTLOAD && "Unknown extload!"); 1295cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is undefined. 1296cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::UNDEF, NVT); 1297cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1298cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 1299cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 1300cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getLoad(NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 1301cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1302cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1303cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 130483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 130583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 1306cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1307cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 130883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1309cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 13100bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1311cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), 1312cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 1313cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1314cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1315cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1316cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1317cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1318cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1319cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1320cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned loads at 1321cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 132283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 132383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 132483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1325cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 1326cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1327cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load both the high bits and maybe some of the low bits. 1328cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 132983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits), 1330cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1331cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1332cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 1333cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 13340bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1335cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load the rest of the low bits. 1336cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, NVT, Ch, Ptr, N->getSrcValue(), 133783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SVOffset+IncrementSize, 133883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 1339cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1340cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1341cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1342cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1343cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1344cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1345cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 134683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 1347cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer low bits from the bottom of Hi to the top of Lo. 1348cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::OR, NVT, Lo, 1349cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getNode(ISD::SHL, NVT, Hi, 1350cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 1351cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy()))); 1352cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Move high bits to the right position in Hi. 1353cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ExtType == ISD::SEXTLOAD ? ISD::SRA : ISD::SRL, NVT, Hi, 135483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 1355cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy())); 1356cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1357cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1358cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1359cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Legalized the chain result - switch anything that used the old chain to 1360cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // use the new one. 1361475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Ch); 1362cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1363cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 136469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Logical(SDNode *N, 1365475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1366475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 136769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 136869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 1369cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(N->getOpcode(), LL.getValueType(), LL, RL); 1370cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(N->getOpcode(), LL.getValueType(), LH, RH); 1371cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1372cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 137305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N, 1374475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 137505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 137605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 137769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1378cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasMULHS = TLI.isOperationLegal(ISD::MULHS, NVT); 1379cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasMULHU = TLI.isOperationLegal(ISD::MULHU, NVT); 1380cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasSMUL_LOHI = TLI.isOperationLegal(ISD::SMUL_LOHI, NVT); 1381cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasUMUL_LOHI = TLI.isOperationLegal(ISD::UMUL_LOHI, NVT); 1382cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU || HasMULHS || HasUMUL_LOHI || HasSMUL_LOHI) { 1383475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 138469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 138569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 138683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned OuterBitSize = VT.getSizeInBits(); 1387e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands unsigned InnerBitSize = NVT.getSizeInBits(); 1388cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned LHSSB = DAG.ComputeNumSignBits(N->getOperand(0)); 1389cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned RHSSB = DAG.ComputeNumSignBits(N->getOperand(1)); 139069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1391e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands APInt HighMask = APInt::getHighBitsSet(OuterBitSize, InnerBitSize); 1392e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (DAG.MaskedValueIsZero(N->getOperand(0), HighMask) && 1393e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands DAG.MaskedValueIsZero(N->getOperand(1), HighMask)) { 1394cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The inputs are both zero-extended. 1395cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1396cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a umul_lohi. 1397cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::UMUL_LOHI, DAG.getVTList(NVT, NVT), LL, RL); 1398ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1399cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1400cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1401cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU) { 1402cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhu+mul. 1403cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1404cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 1405cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1406cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1407cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1408e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (LHSSB > InnerBitSize && RHSSB > InnerBitSize) { 1409cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The input values are both sign-extended. 1410cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasSMUL_LOHI) { 1411cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a smul_lohi. 1412cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::SMUL_LOHI, DAG.getVTList(NVT, NVT), LL, RL); 1413ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1414cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1415cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1416cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHS) { 1417cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhs+mul. 1418cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1419cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::MULHS, NVT, LL, RL); 1420cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1421cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1422cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1423cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1424cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Lo,Hi = umul LHS, RHS. 1425475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UMulLOHI = DAG.getNode(ISD::UMUL_LOHI, 1426cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getVTList(NVT, NVT), LL, RL); 1427cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = UMulLOHI; 1428cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = UMulLOHI.getValue(1); 1429cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 1430cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 1431cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 1432cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 1433cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1434cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1435e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (HasMULHU) { 1436e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1437e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 1438e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 1439e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 1440e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 1441e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 1442e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands return; 1443e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands } 1444cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 144541edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1446cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If nothing else, we can make a libcall. 14475ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 14485ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands if (VT == MVT::i32) 14495ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I32; 14505ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 1451e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LC = RTLIB::MUL_I64; 14525ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 14535ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I128; 14545ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported MUL!"); 1455e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands 1456475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1457e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true/*sign irrelevant*/), Lo, Hi); 145841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1459cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 146069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N, 1461475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 14625ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands MVT VT = N->getValueType(0); 14635ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 14645ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 14655ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands if (VT == MVT::i32) 14665ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I32; 14675ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 14685ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I64; 14695ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 14705ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I128; 14715ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!"); 14725ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 1473475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 14745ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true), Lo, Hi); 1475ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1476ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 147769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N, 1478475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 147983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 148069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 148169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // If we can emit an efficient shift operation, do so now. Check to see if 1482cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the RHS is a constant. 1483cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N->getOperand(1))) 1484cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return ExpandShiftByConstant(N, CN->getValue(), Lo, Hi); 1485cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1486cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If we can determine that the high bit of the shift is zero or one, even if 1487cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the low bits are variable, emit this shift in an optimized form. 1488cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExpandShiftWithKnownAmountBit(N, Lo, Hi)) 1489cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 149069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1491cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this target supports shift_PARTS, use it. First, map to the _PARTS opc. 1492cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned PartsOpc; 149341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 1494cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SHL_PARTS; 149541edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 1496cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRL_PARTS; 149741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 1498cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 1499cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRA_PARTS; 1500cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 150169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1502cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Next check to see if the target supports this SHL_PARTS operation or if it 1503cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // will custom expand it. 150483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1505cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::LegalizeAction Action = TLI.getOperationAction(PartsOpc, NVT); 1506cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if ((Action == TargetLowering::Legal && TLI.isTypeLegal(NVT)) || 1507cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Action == TargetLowering::Custom) { 1508cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Expand the subcomponents. 1509475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH; 151069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 151169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1512475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { LHSL, LHSH, N->getOperand(1) }; 151383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = LHSL.getValueType(); 1514cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(PartsOpc, DAG.getNodeValueTypes(VT, VT), 2, Ops, 3); 1515cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = Lo.getValue(1); 1516cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1517cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 151841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1519cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Otherwise, emit a libcall. 1520dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 152141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands bool isSigned; 152241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 152341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; /*sign irrelevant*/ 1524dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1525dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I32; 1526dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1527dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I64; 1528dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1529dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I128; 153041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 153141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; 1532dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1533dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I32; 1534dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1535dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I64; 1536dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1537dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I128; 153841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 153941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 154041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = true; 1541dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1542dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I32; 1543dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1544dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I64; 1545dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1546dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I128; 154741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } 1548dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported shift!"); 154941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1550475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 155141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, isSigned), Lo, Hi); 155241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1553cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 155405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SIGN_EXTEND(SDNode *N, 1555475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 155605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1557475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 155805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 155905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is sign extension of the input (which degenerates to a copy). 156005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SIGN_EXTEND, NVT, N->getOperand(0)); 156105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part is obtained by SRA'ing all but one of the bits of low part. 156205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned LoSize = NVT.getSizeInBits(); 156305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, Lo, 156405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(LoSize-1, TLI.getShiftAmountTy())); 156505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 156605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 156705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 156805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 156905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1570475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 157105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 157205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 157305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 157405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 157505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 157605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 157705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, Hi.getValueType(), Hi, 157805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 157905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 158005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 158105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 158205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer:: 1583475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandIntRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi) { 158469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 158505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 1586d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 158705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (EVT.bitsLE(Lo.getValueType())) { 158805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the low part if needed. 158905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SIGN_EXTEND_INREG, Lo.getValueType(), Lo, 159005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(1)); 1591d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 159205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part gets the sign extension from the lo-part. This handles 159305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // things like sextinreg V:i64 from i8. 159405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, Hi.getValueType(), Lo, 159505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Hi.getValueType().getSizeInBits()-1, 159605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getShiftAmountTy())); 159705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 159805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. Leave the low part alone, 159905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the high part. 160005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 160105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands EVT.getSizeInBits() - Lo.getValueType().getSizeInBits(); 160205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, Hi.getValueType(), Hi, 160305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 160405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 160505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 1606d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 160705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N, 1608475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 160905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 161005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 161105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 161205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 161305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I32; 161405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 161505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I64; 161605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 161705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I128; 161805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!"); 161905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1620475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 162105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true), Lo, Hi); 1622d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1623d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 162405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_TRUNCATE(SDNode *N, 1625475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 162605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 162705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::TRUNCATE, NVT, N->getOperand(0)); 162805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRL, N->getOperand(0).getValueType(), N->getOperand(0), 162905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), 163005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getShiftAmountTy())); 163105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::TRUNCATE, NVT, Hi); 1632d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1633d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 163405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N, 1635475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 163605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1637d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 163805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 163905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 164005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I32; 164105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 164205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I64; 164305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 164405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I128; 164505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!"); 1646d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 1647475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 164805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, false), Lo, Hi); 1649d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1650cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 165105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N, 1652475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 165305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 165469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 165505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 165605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 165705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I32; 165805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 165905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I64; 166005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 166105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I128; 166205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!"); 1663cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1664475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 166505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, false), Lo, Hi); 1666cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1667cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 166805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N, 1669475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 167083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1671475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 167205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 167305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is zero extension of the input (which degenerates to a copy). 167405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, N->getOperand(0)); 167505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // The high part is just a zero. 167605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 167705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 167805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 167905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 168005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1681475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 168205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 168305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 168405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 168505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 168605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 168705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 168805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getZeroExtendInReg(Hi, MVT::getIntegerVT(ExcessBits)); 16899e255b7df5a0a629920706e086e78ef89bf2f183Dan Gohman } 1690cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1691cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1692cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1693cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 169469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Operand Expansion 1695cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 1696cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 169705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandIntegerOperand - This method is called when the specified operand of 169805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// the specified node is found to need expansion. At this point, all of the 169905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// result types of the node are known to be legal, but other operands of the 170005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// node may need promotion or expansion as well as the specified one. 170105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer::ExpandIntegerOperand(SDNode *N, unsigned OpNo) { 170205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DEBUG(cerr << "Expand integer operand: "; N->dump(&DAG); cerr << "\n"); 1703475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 1704051bb7b07504be9f848f7cce802e62ed24980bc5Duncan Sands 170505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) 170605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands == TargetLowering::Custom) 1707475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Res = TLI.LowerOperation(SDValue(N, OpNo), DAG); 170811ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 1709ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == 0) { 171005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 171105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: 171205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #ifndef NDEBUG 171305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands cerr << "ExpandIntegerOperand Op #" << OpNo << ": "; 171405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->dump(&DAG); cerr << "\n"; 171505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #endif 171605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(0 && "Do not know how to expand this operator's operand!"); 171705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands abort(); 171811ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 171905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 172005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break; 172105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 172211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 172305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BR_CC: Res = ExpandIntOp_BR_CC(N); break; 172405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SELECT_CC: Res = ExpandIntOp_SELECT_CC(N); break; 172505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SETCC: Res = ExpandIntOp_SETCC(N); break; 172605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SINT_TO_FP: Res = ExpandIntOp_SINT_TO_FP(N); break; 172705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::STORE: Res = ExpandIntOp_STORE(cast<StoreSDNode>(N), OpNo); 172805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands break; 172905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: Res = ExpandIntOp_TRUNCATE(N); break; 173005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UINT_TO_FP: Res = ExpandIntOp_UINT_TO_FP(N); break; 173105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 173205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 173369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 173405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is null, the sub-method took care of registering results etc. 1735ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 173605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is N, the sub-method updated N in place. Check to see if any 173705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // operands are new, and if so, mark them. 1738ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == N) { 173905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mark N as new and remark N and its operands. This allows us to correctly 174005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // revisit N if it needs another step of expansion and allows us to visit 174105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // any new operands to N. 174205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ReanalyzeNode(N); 174305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 174411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 1745cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 174605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 174705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Invalid operand expansion"); 174805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1749475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 175005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 1751cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1752cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 175311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// IntegerExpandSetCCOperands - Expand the operands of a comparison. This code 175411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// is shared among BR_CC, SELECT_CC, and SETCC handlers. 1755475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::IntegerExpandSetCCOperands(SDValue &NewLHS, 1756475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &NewRHS, 175711ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands ISD::CondCode &CCCode) { 1758475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSLo, LHSHi, RHSLo, RHSHi; 175969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewLHS, LHSLo, LHSHi); 176069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewRHS, RHSLo, RHSHi); 176141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 176283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = NewLHS.getValueType(); 176341edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1764cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (CCCode == ISD::SETEQ || CCCode == ISD::SETNE) { 176511ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (RHSLo == RHSHi) { 176611ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (ConstantSDNode *RHSCST = dyn_cast<ConstantSDNode>(RHSLo)) { 1767cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (RHSCST->isAllOnesValue()) { 1768cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Equality comparison to -1. 1769cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::AND, LHSLo.getValueType(), LHSLo, LHSHi); 1770cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSLo; 1771cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1772cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 177311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 177411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 177569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1776cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSLo, RHSLo); 1777cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSHi, RHSHi); 1778cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::OR, NewLHS.getValueType(), NewLHS, NewRHS); 1779cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1780cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1781cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 178269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1783cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this is a comparison of the sign bit, just look at the top part. 1784cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // X > -1, x < 0 1785cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(NewRHS)) 1786002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((CCCode == ISD::SETLT && CST->isNullValue()) || // X < 0 1787cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETGT && CST->isAllOnesValue())) { // X > -1 1788cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = LHSHi; 1789cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSHi; 1790cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1791cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 179269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1793cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // FIXME: This generated code sucks. 1794cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::CondCode LowCC; 1795cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (CCCode) { 1796cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: assert(0 && "Unknown integer setcc!"); 1797cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLT: 1798cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 1799cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGT: 1800cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 1801cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLE: 1802cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 1803cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGE: 1804cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 1805cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 180669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1807cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 1808cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 1809cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 181069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1811cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 1812cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 1813cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::DAGCombinerInfo DagCombineInfo(DAG, false, true, NULL); 1814475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2; 18155b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp1 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, LowCC, 1816cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner false, DagCombineInfo); 1817ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp1.getNode()) 18185b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, LowCC); 18195b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp2 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1820cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode, false, DagCombineInfo); 1821ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp2.getNode()) 18225b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp2 = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1823cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getCondCode(CCCode)); 182469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1825ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp1C = dyn_cast<ConstantSDNode>(Tmp1.getNode()); 1826ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp2C = dyn_cast<ConstantSDNode>(Tmp2.getNode()); 1827002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((Tmp1C && Tmp1C->isNullValue()) || 1828002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->isNullValue() && 1829cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLE || CCCode == ISD::SETGE || 1830cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGE || CCCode == ISD::SETULE)) || 1831002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->getAPIntValue() == 1 && 1832cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLT || CCCode == ISD::SETGT || 1833cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGT || CCCode == ISD::SETULT))) { 1834cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // low part is known false, returns high part. 1835cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LE / GE, if high part is known false, ignore the low part. 1836cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LT / GT, if high part is known true, ignore the low part. 1837cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = Tmp2; 1838475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 1839cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1840cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 184169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 18425b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel NewLHS = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1843cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::SETEQ, false, DagCombineInfo); 1844ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!NewLHS.getNode()) 18455b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel NewLHS = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 184671a2cb25ebc818383dd0f80475bc166f834e8d99Chris Lattner ISD::SETEQ); 1847cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::SELECT, Tmp1.getValueType(), 1848cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS, Tmp1, Tmp2); 1849475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 1850cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1851cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1852475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_BR_CC(SDNode *N) { 1853475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 185405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 185505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 185605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 185705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 185805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 1859ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 186005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 186105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 186205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 186305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 186405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 1865475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 186605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode), NewLHS, NewRHS, 186705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(4)); 186805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 186905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1870475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SELECT_CC(SDNode *N) { 1871475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 187205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 187305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 187405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 187505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 187605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 1877ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 187805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 187905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 188005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 188105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 188205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 1883475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 188405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(2), N->getOperand(3), 188505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 188605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 188705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1888475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SETCC(SDNode *N) { 1889475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 189005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 189105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 189205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 189305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, use it. 1894ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 189505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(NewLHS.getValueType() == N->getValueType(0) && 189605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Unexpected setcc expansion!"); 189705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return NewLHS; 189805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 189905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 190005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, update N to have the operands specified. 1901475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 190205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 190305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 190405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1905475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) { 1906475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 190705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 1908b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), DstVT); 190905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 191005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this SINT_TO_FP!"); 191105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return MakeLibCall(LC, DstVT, &Op, 1, true); 191205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 191305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1914475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo) { 1915ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalStore(N)) 1916ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands return ExpandOp_NormalStore(N, OpNo); 191778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 191878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 1919cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(OpNo == 1 && "Can only expand the stored value so far"); 1920cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 192183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getOperand(1).getValueType(); 192283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1923475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 1924475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 1925cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 1926cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 1927cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 1928475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 1929cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1930a1ace76c70ae5332d6f33fce5c0c1e2fdb8cca11Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1931cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 193278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 193369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 1934cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getTruncStore(Ch, Lo, Ptr, N->getSrcValue(), SVOffset, 1935b625f2f8960de32bc973092aaee8ac62863006feDan Gohman N->getMemoryVT(), isVolatile, Alignment); 1936cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 1937cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 193869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 1939cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1940cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getStore(Ch, Lo, Ptr, N->getSrcValue(), SVOffset, 1941cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1942cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1943cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 194483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 194583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 1946cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1947cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 194883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1949cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 19500bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1951cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getTruncStore(Ch, Hi, Ptr, N->getSrcValue(), 1952cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 1953cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1954cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 1955cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1956cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned stores at 1957cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 195869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 1959cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 196083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 196183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 196283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1963cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 196483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT HiVT = MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits); 1965cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 196683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 1967cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer high bits from the top of Lo to the bottom of Hi. 1968cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::SHL, NVT, Hi, 196983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 1970cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy())); 1971cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::OR, NVT, Hi, 1972cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getNode(ISD::SRL, NVT, Lo, 1973cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 1974cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy()))); 1975cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1976cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1977cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store both the high bits and maybe some of the low bits. 1978cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getTruncStore(Ch, Hi, Ptr, N->getSrcValue(), 1979cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset, HiVT, isVolatile, Alignment); 1980cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1981cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 1982cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 19830bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1984cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store the lowest ExcessBits bits in the second half. 1985cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getTruncStore(Ch, Lo, Ptr, N->getSrcValue(), 1986cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, 198783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 1988cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1989cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 1990cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1991cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 199205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1993475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_TRUNCATE(SDNode *N) { 1994475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 199505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 199605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Just truncate the low part of the source. 199705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return DAG.getNode(ISD::TRUNCATE, N->getValueType(0), InL); 199805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 199905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2000475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) { 2001475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 200205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT SrcVT = Op.getValueType(); 200305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 200405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 200505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.getOperationAction(ISD::SINT_TO_FP, SrcVT) == TargetLowering::Custom){ 200605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Do a signed conversion then adjust the result. 2007475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignedConv = DAG.getNode(ISD::SINT_TO_FP, DstVT, Op); 200805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SignedConv = TLI.LowerOperation(SignedConv, DAG); 200905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 201005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The result of the signed conversion needs adjusting if the 'sign bit' of 201105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // the incoming integer was set. To handle this, we dynamically test to see 201205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // if it is set, and, if so, add a fudge factor. 201305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 201405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE32 = 0x4F800000ULL; 201505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE64 = 0x5F800000ULL; 201605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE128 = 0x7F800000ULL; 201705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 201805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt FF(32, 0); 201905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (SrcVT == MVT::i32) 202005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE32); 202105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i64) 202205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE64); 202305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i128) 202405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE128); 202505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else 202605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(false && "Unsupported UINT_TO_FP!"); 202705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 202805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Check whether the sign bit is set. 2029475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 203005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(Op, Lo, Hi); 2031475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignSet = DAG.getSetCC(TLI.getSetCCResultType(Hi), Hi, 203205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(0, Hi.getValueType()), 203305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::SETLT); 203405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 203505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Build a 64 bit pair (0, FF) in the constant pool, with FF in the lo bits. 2036475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgePtr = DAG.getConstantPool(ConstantInt::get(FF.zext(64)), 203705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getPointerTy()); 203805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 203905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get a pointer to FF if the sign bit was set, or to 0 otherwise. 2040475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0); 2041475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Four = DAG.getIntPtrConstant(4); 204205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.isBigEndian()) std::swap(Zero, Four); 2043475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset = DAG.getNode(ISD::SELECT, Zero.getValueType(), SignSet, 204405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Zero, Four); 204505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FudgePtr = DAG.getNode(ISD::ADD, TLI.getPointerTy(), FudgePtr, Offset); 204605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 204705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Load the value out, extending it from f32 to the destination float type. 204805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // FIXME: Avoid the extend by constructing the right constant pool? 2049475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Fudge = DAG.getExtLoad(ISD::EXTLOAD, DstVT, DAG.getEntryNode(), 205005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FudgePtr, NULL, 0, MVT::f32); 205105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return DAG.getNode(ISD::FADD, DstVT, SignedConv, Fudge); 205205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 205305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 205405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, use a libcall. 2055b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getUINTTOFP(SrcVT, DstVT); 205605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 205705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this UINT_TO_FP!"); 205805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return MakeLibCall(LC, DstVT, &Op, 1, true); 205905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 2060