LegalizeIntegerTypes.cpp revision 7e4982287591945c4e42ba8470a978e629789c76
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 275f6e29499ac036821e7f84e264663c24888d68c78Duncan Sands SDValue Odd = DAG.getNode(ISD::TRUNCATE, MVT::i1, OldIdx); 27669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::SELECT, NewVT, Odd, Hi, Lo); 27769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 27869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 279475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_FP_TO_XINT(SDNode *N) { 280bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned NewOpc = N->getOpcode(); 281bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 282d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 283bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If we're promoting a UINT to a larger size, check to see if the new node 284bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // will be legal. If it isn't, check to see if FP_TO_SINT is legal, since 285bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // we can use that instead. This allows us to generate better code for 286bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // FP_TO_UINT for small destination sizes on targets where FP_TO_UINT is not 287bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal, such as PowerPC. 288bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::FP_TO_UINT) { 289bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (!TLI.isOperationLegal(ISD::FP_TO_UINT, NVT) && 290bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands (TLI.isOperationLegal(ISD::FP_TO_SINT, NVT) || 291bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getOperationAction(ISD::FP_TO_SINT, NVT)==TargetLowering::Custom)) 292bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands NewOpc = ISD::FP_TO_SINT; 293bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 294d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 295bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(NewOpc, NVT, N->getOperand(0)); 296d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands} 297d3ca9fc9984d036146886a40ad3f73aaf7a424ebDuncan Sands 298475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_INT_EXTEND(SDNode *N) { 299bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 300be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 301bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (getTypeAction(N->getOperand(0).getValueType()) == PromoteInteger) { 302475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 303bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType().getSizeInBits() <= NVT.getSizeInBits() && 304bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Extension doesn't make sense!"); 305126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 306bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result and operand types are the same after promotion, simplify 307bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // to an in-register extension. 308bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (NVT == Res.getValueType()) { 309bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The high bits are not guaranteed to be anything. Insert an extend. 310bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::SIGN_EXTEND) 311bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Res, 312bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(N->getOperand(0).getValueType())); 313bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::ZERO_EXTEND) 314bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getZeroExtendInReg(Res, N->getOperand(0).getValueType()); 315bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(N->getOpcode() == ISD::ANY_EXTEND && "Unknown integer extension!"); 316bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 317126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands } 31869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 31969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 320bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Otherwise, just extend the original operand all the way to the larger type. 321bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), NVT, N->getOperand(0)); 322bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 32369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 324475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_LOAD(LoadSDNode *N) { 325bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 326bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 327bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::LoadExtType ExtType = 328bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ISD::isNON_EXTLoad(N) ? ISD::EXTLOAD : N->getExtensionType(); 329475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = DAG.getExtLoad(ExtType, NVT, N->getChain(), N->getBasePtr(), 330bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getSrcValue(), N->getSrcValueOffset(), 331bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getMemoryVT(), N->isVolatile(), 332bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getAlignment()); 33369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 334bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 335bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 336475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Res.getValue(1)); 337bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 33869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 33969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 340475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SDIV(SDNode *N) { 341bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Sign extend the input. 342475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 343475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 344bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 345bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands LHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, LHS.getValueType(), LHS, 346bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(VT)); 347bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands RHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, RHS.getValueType(), RHS, 348bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getValueType(VT)); 349bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 350bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 35169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 35269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 353475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT(SDNode *N) { 354475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(1)); 355475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(2)); 356bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SELECT, LHS.getValueType(), N->getOperand(0),LHS,RHS); 35769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 35869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 359475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SELECT_CC(SDNode *N) { 360475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(2)); 361475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(3)); 362bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SELECT_CC, LHS.getValueType(), N->getOperand(0), 363bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 36469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 36569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 366475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SETCC(SDNode *N) { 367e47561ccff9c7a76f9392b26ae6202e30f1247edDuncan Sands MVT SVT = TLI.getSetCCResultType(N->getOperand(0)); 3687e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(isTypeLegal(SVT) && "Illegal SetCC type!"); 3697e4982287591945c4e42ba8470a978e629789c76Duncan Sands 3707e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Get the SETCC result using the canonical SETCC type. 3717e4982287591945c4e42ba8470a978e629789c76Duncan Sands SDValue SetCC = DAG.getNode(ISD::SETCC, SVT, N->getOperand(0), 3727e4982287591945c4e42ba8470a978e629789c76Duncan Sands N->getOperand(1), N->getOperand(2)); 3737e4982287591945c4e42ba8470a978e629789c76Duncan Sands 3747e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Convert to the expected type. 3757e4982287591945c4e42ba8470a978e629789c76Duncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 376e47561ccff9c7a76f9392b26ae6202e30f1247edDuncan Sands assert(NVT.getSizeInBits() <= SVT.getSizeInBits() && 377e47561ccff9c7a76f9392b26ae6202e30f1247edDuncan Sands "Integer type overpromoted?"); 3787e4982287591945c4e42ba8470a978e629789c76Duncan Sands return DAG.getNode(ISD::TRUNCATE, NVT, SetCC); 37969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 38069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 381475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SHL(SDNode *N) { 382bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SHL, TLI.getTypeToTransformTo(N->getValueType(0)), 383bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands GetPromotedInteger(N->getOperand(0)), N->getOperand(1)); 38469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 38569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 386475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N) { 387475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 3888d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), Op, 3898d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands N->getOperand(1)); 3908d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands} 3918d56a6f4d8b010d4c582225a08ece971613f6fe3Duncan Sands 392475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SimpleIntBinOp(SDNode *N) { 393bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input may have strange things in the top bits of the registers, but 394bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // these operations don't care. They may have weird bits going out, but 395bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that too is okay if they are integer operations. 396475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 397475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 398bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 39969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 40069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 401475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRA(SDNode *N) { 402bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly sign extended. 403bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 404bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 405475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(N->getOperand(0)); 406bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Res, DAG.getValueType(VT)); 407bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SRA, NVT, Res, N->getOperand(1)); 408bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 40969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 410475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_SRL(SDNode *N) { 411bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The input value must be properly zero extended. 412bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 413bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 414475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = ZExtPromotedInteger(N->getOperand(0)); 415bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SRL, NVT, Res, N->getOperand(1)); 41669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 41769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 418475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_TRUNCATE(SDNode *N) { 419475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res; 42069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 421bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (getTypeAction(N->getOperand(0).getValueType())) { 422bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands default: assert(0 && "Unknown type action!"); 423bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case Legal: 424bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ExpandInteger: 425bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = N->getOperand(0); 426bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 427bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case PromoteInteger: 428bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = GetPromotedInteger(N->getOperand(0)); 429bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands break; 430bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 431bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 432bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 433bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType().getSizeInBits() >= NVT.getSizeInBits() && 434bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Truncation doesn't make sense!"); 435bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (Res.getValueType() == NVT) 436bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Res; 437bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 438bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate to NVT instead of VT 439bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::TRUNCATE, NVT, Res); 44069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 44169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 442475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UDIV(SDNode *N) { 443bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Zero extend the input. 444475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = GetPromotedInteger(N->getOperand(0)); 445475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = GetPromotedInteger(N->getOperand(1)); 446bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 447bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands LHS = DAG.getZeroExtendInReg(LHS, VT); 448bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands RHS = DAG.getZeroExtendInReg(RHS, VT); 44969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 450bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(N->getOpcode(), LHS.getValueType(), LHS, RHS); 451bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 45269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 453475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_UNDEF(SDNode *N) { 454bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::UNDEF, TLI.getTypeToTransformTo(N->getValueType(0))); 45569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 45669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 457475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntRes_VAARG(SDNode *N) { 458475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = N->getOperand(0); // Get the chain. 459475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getOperand(1); // Get the pointer. 460bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT VT = N->getValueType(0); 46169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 462bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands const Value *V = cast<SrcValueSDNode>(N->getOperand(2))->getValue(); 463475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), Chain, Ptr, V, 0); 46469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 465bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Increment the arg pointer, VAList, to the next vaarg 466bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // FIXME: should the ABI size be used for the increment? Think of 467bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // x86 long double (10 bytes long, but aligned on 4 or 8 bytes) or 468bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // integers of unusual size (such MVT::i1, which gives an increment 469bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // of zero here!). 470bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Increment = VT.getSizeInBits() / 8; 471475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp = DAG.getNode(ISD::ADD, TLI.getPointerTy(), VAList, 472bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getConstant(Increment, TLI.getPointerTy())); 47369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 474bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Store the incremented VAList to the pointer. 475bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Tmp = DAG.getStore(VAList.getValue(1), Tmp, Ptr, V, 0); 47669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 477bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Load the actual argument out of the arg pointer VAList. 478bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Tmp = DAG.getExtLoad(ISD::EXTLOAD, TLI.getTypeToTransformTo(VT), Tmp, 479bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands VAList, NULL, 0, VT); 48069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 481bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Legalized the chain result - switch anything that used the old chain to 482bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // use the new one. 483475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Tmp.getValue(1)); 484bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return Tmp; 48569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 48669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 4877fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 488bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 489bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands// Integer Operand Promotion 490bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands//===----------------------------------------------------------------------===// 4917fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 492bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// PromoteIntegerOperand - This method is called when the specified operand of 493bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// the specified node is found to need promotion. At this point, all of the 494bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// result types of the node are known to be legal, but other operands of the 495bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands/// node may need promotion or expansion as well as the specified one. 496bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sandsbool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) { 497bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DEBUG(cerr << "Promote integer operand: "; N->dump(&DAG); cerr << "\n"); 498475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 4997fc8ab81f5f46dcba0f76b1c546a1d11ccbebe26Duncan Sands 500bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) 501bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands == TargetLowering::Custom) 502475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Res = TLI.LowerOperation(SDValue(N, OpNo), DAG); 50369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 504ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == 0) { 505bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands switch (N->getOpcode()) { 506bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands default: 507bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #ifndef NDEBUG 508bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands cerr << "PromoteIntegerOperand Op #" << OpNo << ": "; 509bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->dump(&DAG); cerr << "\n"; 510bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands #endif 511bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(0 && "Do not know how to promote this operator's operand!"); 512bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands abort(); 51369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 514bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::ANY_EXTEND: Res = PromoteIntOp_ANY_EXTEND(N); break; 515bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BR_CC: Res = PromoteIntOp_BR_CC(N, OpNo); break; 516bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BRCOND: Res = PromoteIntOp_BRCOND(N, OpNo); break; 517bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BUILD_PAIR: Res = PromoteIntOp_BUILD_PAIR(N); break; 518bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::BUILD_VECTOR: Res = PromoteIntOp_BUILD_VECTOR(N); break; 519bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::FP_EXTEND: Res = PromoteIntOp_FP_EXTEND(N); break; 520bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::FP_ROUND: Res = PromoteIntOp_FP_ROUND(N); break; 521bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::INSERT_VECTOR_ELT: 522bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Res = PromoteIntOp_INSERT_VECTOR_ELT(N, OpNo);break; 523bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::MEMBARRIER: Res = PromoteIntOp_MEMBARRIER(N); break; 524bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT: Res = PromoteIntOp_SELECT(N, OpNo); break; 525bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SELECT_CC: Res = PromoteIntOp_SELECT_CC(N, OpNo); break; 526bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SETCC: Res = PromoteIntOp_SETCC(N, OpNo); break; 527bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SIGN_EXTEND: Res = PromoteIntOp_SIGN_EXTEND(N); break; 528bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::STORE: Res = PromoteIntOp_STORE(cast<StoreSDNode>(N), 529bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands OpNo); break; 530bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::TRUNCATE: Res = PromoteIntOp_TRUNCATE(N); break; 531bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::ZERO_EXTEND: Res = PromoteIntOp_ZERO_EXTEND(N); break; 532bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 533bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::SINT_TO_FP: 534bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands case ISD::UINT_TO_FP: Res = PromoteIntOp_INT_TO_FP(N); break; 535bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 536bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 537bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 538bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is null, the sub-method took care of registering results etc. 539ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 540bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // If the result is N, the sub-method updated N in place. 541ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == N) { 542bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Mark N as new and remark N and its operands. This allows us to correctly 543bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // revisit N if it needs another step of promotion and allows us to visit 544bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // any new operands to N. 545bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands ReanalyzeNode(N); 546bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return true; 547bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands } 548bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 549bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 550bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands "Invalid operand expansion"); 551bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 552475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 553bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return false; 55469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 55569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 55669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// PromoteSetCCOperands - Promote the operands of a comparison. This code is 55769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// shared among BR_CC, SELECT_CC, and SETCC handlers. 558475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::PromoteSetCCOperands(SDValue &NewLHS,SDValue &NewRHS, 55969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands ISD::CondCode CCCode) { 56069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VT = NewLHS.getValueType(); 56169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 56269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Get the promoted values. 56369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = GetPromotedInteger(NewLHS); 56469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = GetPromotedInteger(NewRHS); 56569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 56669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Otherwise, we have to insert explicit sign or zero extends. Note 56769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that we could insert sign extends for ALL conditions, but zero extend 56869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // is cheaper on many machines (an AND instead of two shifts), so prefer 56969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // it. 57069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands switch (CCCode) { 57169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands default: assert(0 && "Unknown integer comparison!"); 57269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETEQ: 57369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETNE: 57469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGE: 57569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETUGT: 57669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULE: 57769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETULT: 57869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // ALL of these operations will work if we either sign or zero extend 57969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // the operands (including the unsigned comparisons!). Zero extend is 58069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // usually a simpler/cheaper operation, so prefer it. 58169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = DAG.getZeroExtendInReg(NewLHS, VT); 58269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = DAG.getZeroExtendInReg(NewRHS, VT); 58311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 58469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGE: 58569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETGT: 58669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLT: 58769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::SETLE: 58869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewLHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, NewLHS.getValueType(), NewLHS, 58969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getValueType(VT)); 59069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewRHS = DAG.getNode(ISD::SIGN_EXTEND_INREG, NewRHS.getValueType(), NewRHS, 59169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DAG.getValueType(VT)); 59211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands break; 59369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 59469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 59569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 596475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ANY_EXTEND(SDNode *N) { 597475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 598bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 599bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 60069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 601475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo) { 602bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 2 && "Don't know how to promote this operand!"); 60369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 604475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(2); 605475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(3); 606bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(1))->get()); 60769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 608bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0), CC (#1) and basic block destination (Op#4) are always 609bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // legal types. 610475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 611bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(1), LHS, RHS, N->getOperand(4)); 612bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 613bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 614475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo) { 615bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 1 && "only know how to promote condition"); 616475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Cond = GetPromotedInteger(N->getOperand(1)); // Promote condition. 617bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 618bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The top bits of the promoted condition are not necessarily zero, ensure 619bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // that the value is properly zero extended. 620bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned BitWidth = Cond.getValueSizeInBits(); 621bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (!DAG.MaskedValueIsZero(Cond, 622bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands APInt::getHighBitsSet(BitWidth, BitWidth-1))) 623bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Cond = DAG.getZeroExtendInReg(Cond, MVT::i1); 624bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 625bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The chain (Op#0) and basic block destination (Op#2) are always legal types. 626475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Cond, 627bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(2)); 628bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 629bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 630475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_PAIR(SDNode *N) { 631bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Since the result type is legal, the operands must promote to it. 632bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT OVT = N->getOperand(0).getValueType(); 633475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = GetPromotedInteger(N->getOperand(0)); 634475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = GetPromotedInteger(N->getOperand(1)); 635bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(Lo.getValueType() == N->getValueType(0) && "Operand over promoted?"); 636bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 637bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Lo = DAG.getZeroExtendInReg(Lo, OVT); 638bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Hi = DAG.getNode(ISD::SHL, N->getValueType(0), Hi, 639bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getConstant(OVT.getSizeInBits(), 640bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands TLI.getShiftAmountTy())); 641bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::OR, N->getValueType(0), Lo, Hi); 64269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 64369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 644475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_BUILD_VECTOR(SDNode *N) { 64569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // The vector type is legal but the element type is not. This implies 64669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // that the vector is a power-of-two in length and that the element 64769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // type does not have a strange size (eg: it is not i1). 64869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT VecVT = N->getValueType(0); 64969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands unsigned NumElts = VecVT.getVectorNumElements(); 65069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(!(NumElts & 1) && "Legal vector of one illegal element?"); 65169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 65269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Build a vector of half the length out of elements of twice the bitwidth. 65369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // For example <4 x i16> -> <2 x i32>. 65469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT OldVT = N->getOperand(0).getValueType(); 65569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT NewVT = MVT::getIntegerVT(2 * OldVT.getSizeInBits()); 65669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OldVT.isSimple() && NewVT.isSimple()); 65769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 658475871a144eb604ddaf37503397ba0941442e5fbDan Gohman std::vector<SDValue> NewElts; 65969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewElts.reserve(NumElts/2); 66069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 66169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 0; i < NumElts; i += 2) { 66269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Combine two successive elements into one promoted element. 663475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = N->getOperand(i); 664475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = N->getOperand(i+1); 66569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (TLI.isBigEndian()) 66669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands std::swap(Lo, Hi); 66769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewElts.push_back(JoinIntegers(Lo, Hi)); 66869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 66969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 670475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewVec = DAG.getNode(ISD::BUILD_VECTOR, 67169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands MVT::getVectorVT(NewVT, NewElts.size()), 67269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands &NewElts[0], NewElts.size()); 67369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 67469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Convert the new vector to the old vector type. 67569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands return DAG.getNode(ISD::BIT_CONVERT, VecVT, NewVec); 67669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 67769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 678475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_FP_EXTEND(SDNode *N) { 679475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 680bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::FP_EXTEND, N->getValueType(0), Op); 681bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 682bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 683475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_FP_ROUND(SDNode *N) { 684475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 685bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::FP_ROUND, N->getValueType(0), Op, 686bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands DAG.getIntPtrConstant(0)); 687bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 688bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 689475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, 690475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned OpNo) { 69169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands if (OpNo == 1) { 69269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the inserted value. This is valid because the type does not 69369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // have to match the vector element type. 69469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 69569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Check that any extra bits introduced will be truncated away. 69669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(N->getOperand(1).getValueType().getSizeInBits() >= 69769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getValueType(0).getVectorElementType().getSizeInBits() && 69869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands "Type of inserted value narrower than vector element type!"); 699475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 70069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetPromotedInteger(N->getOperand(1)), 70169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(2)); 70269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 70369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 70469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands assert(OpNo == 2 && "Different operand and result vector types?"); 70569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 70669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // Promote the index. 707475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Idx = N->getOperand(2); 70869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands Idx = DAG.getZeroExtendInReg(GetPromotedInteger(Idx), Idx.getValueType()); 709475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 71069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands N->getOperand(1), Idx); 71169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 71269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 713475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_INT_TO_FP(SDNode *N) { 714475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue In = GetPromotedInteger(N->getOperand(0)); 715bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands MVT OpVT = N->getOperand(0).getValueType(); 716bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands if (N->getOpcode() == ISD::UINT_TO_FP) 717bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In = DAG.getZeroExtendInReg(In, OpVT); 718bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands else 719bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In = DAG.getNode(ISD::SIGN_EXTEND_INREG, In.getValueType(), 720bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands In, DAG.getValueType(OpVT)); 721bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 722475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), In); 723bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 724bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 725475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_MEMBARRIER(SDNode *N) { 726475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewOps[6]; 72769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[0] = N->getOperand(0); 72869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands for (unsigned i = 1; i < array_lengthof(NewOps); ++i) { 729475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag = GetPromotedInteger(N->getOperand(i)); 73069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands NewOps[i] = DAG.getZeroExtendInReg(Flag, MVT::i1); 73169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands } 732475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue (N, 0), NewOps, 73369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands array_lengthof(NewOps)); 73469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands} 73569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 736475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT(SDNode *N, unsigned OpNo) { 737bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Only know how to promote condition"); 7387e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(N->getOperand(0).getValueType() == MVT::i1 && 7397e4982287591945c4e42ba8470a978e629789c76Duncan Sands "SetCC type is not legal??"); 7407e4982287591945c4e42ba8470a978e629789c76Duncan Sands SDValue Cond = GetPromotedInteger(N->getOperand(0)); 7417e4982287591945c4e42ba8470a978e629789c76Duncan Sands 7427e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Promote all the way up to SVT, the canonical SetCC type. 7437e4982287591945c4e42ba8470a978e629789c76Duncan Sands MVT SVT = TLI.getSetCCResultType(Cond); 7447e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(isTypeLegal(SVT) && "Illegal SetCC type!"); 7457e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(Cond.getValueSizeInBits() <= SVT.getSizeInBits() && 7467e4982287591945c4e42ba8470a978e629789c76Duncan Sands "Integer type overpromoted?"); 747bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 7487e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Make sure the extra bits conform to getSetCCResultContents. There are 7497e4982287591945c4e42ba8470a978e629789c76Duncan Sands // two sets of extra bits: those in Cond, which come from type promotion, 7507e4982287591945c4e42ba8470a978e629789c76Duncan Sands // and those we need to add to have the final type be SVT (for most targets 7517e4982287591945c4e42ba8470a978e629789c76Duncan Sands // this last set of bits is empty). 7527e4982287591945c4e42ba8470a978e629789c76Duncan Sands unsigned CondBits = Cond.getValueSizeInBits(); 7537e4982287591945c4e42ba8470a978e629789c76Duncan Sands ISD::NodeType ExtendCode; 7547e4982287591945c4e42ba8470a978e629789c76Duncan Sands switch (TLI.getSetCCResultContents()) { 7557e4982287591945c4e42ba8470a978e629789c76Duncan Sands default: 7567e4982287591945c4e42ba8470a978e629789c76Duncan Sands assert(false && "Unknown SetCCResultValue!"); 7577e4982287591945c4e42ba8470a978e629789c76Duncan Sands case TargetLowering::UndefinedSetCCResult: 7587e4982287591945c4e42ba8470a978e629789c76Duncan Sands // Extend to SVT by adding rubbish. 7597e4982287591945c4e42ba8470a978e629789c76Duncan Sands ExtendCode = ISD::ANY_EXTEND; 7607e4982287591945c4e42ba8470a978e629789c76Duncan Sands break; 7617e4982287591945c4e42ba8470a978e629789c76Duncan Sands case TargetLowering::ZeroOrOneSetCCResult: 7627e4982287591945c4e42ba8470a978e629789c76Duncan Sands ExtendCode = ISD::ZERO_EXTEND; 7637e4982287591945c4e42ba8470a978e629789c76Duncan Sands if (!DAG.MaskedValueIsZero(Cond,APInt::getHighBitsSet(CondBits,CondBits-1))) 7647e4982287591945c4e42ba8470a978e629789c76Duncan Sands // All extra bits need to be cleared. Do this by zero extending the 7657e4982287591945c4e42ba8470a978e629789c76Duncan Sands // original MVT::i1 condition value all the way to SVT. 7667e4982287591945c4e42ba8470a978e629789c76Duncan Sands Cond = N->getOperand(0); 7677e4982287591945c4e42ba8470a978e629789c76Duncan Sands break; 7687e4982287591945c4e42ba8470a978e629789c76Duncan Sands case TargetLowering::ZeroOrNegativeOneSetCCResult: { 7697e4982287591945c4e42ba8470a978e629789c76Duncan Sands ExtendCode = ISD::SIGN_EXTEND; 7707e4982287591945c4e42ba8470a978e629789c76Duncan Sands unsigned SignBits = DAG.ComputeNumSignBits(Cond); 7717e4982287591945c4e42ba8470a978e629789c76Duncan Sands if (SignBits != CondBits) 7727e4982287591945c4e42ba8470a978e629789c76Duncan Sands // All extra bits need to be sign extended. Do this by sign extending the 7737e4982287591945c4e42ba8470a978e629789c76Duncan Sands // original MVT::i1 condition value all the way to SVT. 7747e4982287591945c4e42ba8470a978e629789c76Duncan Sands Cond = N->getOperand(0); 7757e4982287591945c4e42ba8470a978e629789c76Duncan Sands break; 7767e4982287591945c4e42ba8470a978e629789c76Duncan Sands } 7777e4982287591945c4e42ba8470a978e629789c76Duncan Sands } 7787e4982287591945c4e42ba8470a978e629789c76Duncan Sands Cond = DAG.getNode(ExtendCode, SVT, Cond); 779bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 7807e4982287591945c4e42ba8470a978e629789c76Duncan Sands return DAG.UpdateNodeOperands(SDValue(N, 0), Cond, 7817e4982287591945c4e42ba8470a978e629789c76Duncan Sands N->getOperand(1), N->getOperand(2)); 782bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 783bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 784475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo) { 785bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 786bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 787475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 788475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 789bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(4))->get()); 790bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 791bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#4) and the possible return values (#2 and #3) have legal types. 792475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2), 793bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands N->getOperand(3), N->getOperand(4)); 794bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 795bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 796475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SETCC(SDNode *N, unsigned OpNo) { 797bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(OpNo == 0 && "Don't know how to promote this operand!"); 798bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 799475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHS = N->getOperand(0); 800475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue RHS = N->getOperand(1); 801bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(2))->get()); 802bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 803bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // The CC (#2) is always legal. 804475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), LHS, RHS, N->getOperand(2)); 805bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 806bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 807475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_SIGN_EXTEND(SDNode *N) { 808475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 809bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op = DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 810bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), 811bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op, DAG.getValueType(N->getOperand(0).getValueType())); 812bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 813bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 814475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo){ 815bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 816475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(), Ptr = N->getBasePtr(); 817bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands int SVOffset = N->getSrcValueOffset(); 818bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands unsigned Alignment = N->getAlignment(); 819bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands bool isVolatile = N->isVolatile(); 820bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 821475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = GetPromotedInteger(N->getValue()); // Get promoted value. 822bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 823bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands assert(!N->isTruncatingStore() && "Cannot promote this store operand!"); 824bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 825bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands // Truncate the value and store the result. 826bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getTruncStore(Ch, Val, Ptr, N->getSrcValue(), 827bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands SVOffset, N->getMemoryVT(), 828bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands isVolatile, Alignment); 829bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 830bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 831475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_TRUNCATE(SDNode *N) { 832475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 833bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getNode(ISD::TRUNCATE, N->getValueType(0), Op); 834bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 835bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 836475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::PromoteIntOp_ZERO_EXTEND(SDNode *N) { 837475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = GetPromotedInteger(N->getOperand(0)); 838bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands Op = DAG.getNode(ISD::ANY_EXTEND, N->getValueType(0), Op); 839bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands return DAG.getZeroExtendInReg(Op, N->getOperand(0).getValueType()); 840bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands} 841bf304c20651b80309af4c0fb3a14c0d73eaa984fDuncan Sands 84269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 84369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 84469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Result Expansion 84569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands//===----------------------------------------------------------------------===// 84669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 84769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands/// ExpandIntegerResult - This method is called when the specified result of the 848cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// specified node is found to need expansion. At this point, the node may also 849cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// have invalid operands or may have other results that need promotion, we just 850cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner/// know that (at least) one result needs expansion. 85169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) { 85269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands DEBUG(cerr << "Expand integer result: "; N->dump(&DAG); cerr << "\n"); 853475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 854475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Lo = Hi = SDValue(); 855cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 856cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // See if the target wants to custom expand this node. 857126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getValueType(ResNo)) == 858126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands TargetLowering::Custom) { 859cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If the target wants to, allow it to lower this itself. 860126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands if (SDNode *P = TLI.ReplaceNodeResults(N, DAG)) { 861cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Everything that once used N now uses P. We are guaranteed that the 862cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // result value types of N and the result value types of P match. 863cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ReplaceNodeWith(N, P); 864cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 865cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 866cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 867cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 868cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (N->getOpcode()) { 869cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: 870cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#ifndef NDEBUG 87169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands cerr << "ExpandIntegerResult #" << ResNo << ": "; 872cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner N->dump(&DAG); cerr << "\n"; 873cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner#endif 87478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(0 && "Do not know how to expand the result of this operator!"); 875cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner abort(); 87669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 87778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break; 87878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; 87978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; 88078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; 88178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 88278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break; 88378cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; 8844a307ecce68f90e0eebf1ded52b947816cdc2304Duncan Sands case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; 88578cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; 88678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 88769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::ANY_EXTEND: ExpandIntRes_ANY_EXTEND(N, Lo, Hi); break; 88895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands case ISD::AssertSext: ExpandIntRes_AssertSext(N, Lo, Hi); break; 88969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::AssertZext: ExpandIntRes_AssertZext(N, Lo, Hi); break; 89005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BSWAP: ExpandIntRes_BSWAP(N, Lo, Hi); break; 89105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::Constant: ExpandIntRes_Constant(N, Lo, Hi); break; 89205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTLZ: ExpandIntRes_CTLZ(N, Lo, Hi); break; 89305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTPOP: ExpandIntRes_CTPOP(N, Lo, Hi); break; 89405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::CTTZ: ExpandIntRes_CTTZ(N, Lo, Hi); break; 89569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_SINT: ExpandIntRes_FP_TO_SINT(N, Lo, Hi); break; 89669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::FP_TO_UINT: ExpandIntRes_FP_TO_UINT(N, Lo, Hi); break; 89769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands case ISD::LOAD: ExpandIntRes_LOAD(cast<LoadSDNode>(N), Lo, Hi); break; 89805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::MUL: ExpandIntRes_MUL(N, Lo, Hi); break; 89905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SDIV: ExpandIntRes_SDIV(N, Lo, Hi); break; 90005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND: ExpandIntRes_SIGN_EXTEND(N, Lo, Hi); break; 90105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SIGN_EXTEND_INREG: ExpandIntRes_SIGN_EXTEND_INREG(N, Lo, Hi); break; 90205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SREM: ExpandIntRes_SREM(N, Lo, Hi); break; 90305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: ExpandIntRes_TRUNCATE(N, Lo, Hi); break; 90405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UDIV: ExpandIntRes_UDIV(N, Lo, Hi); break; 90505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UREM: ExpandIntRes_UREM(N, Lo, Hi); break; 90605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::ZERO_EXTEND: ExpandIntRes_ZERO_EXTEND(N, Lo, Hi); break; 90769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 908cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::AND: 909cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::OR: 91005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::XOR: ExpandIntRes_Logical(N, Lo, Hi); break; 91105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 912cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADD: 91305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUB: ExpandIntRes_ADDSUB(N, Lo, Hi); break; 91405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 915cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDC: 91605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBC: ExpandIntRes_ADDSUBC(N, Lo, Hi); break; 91705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 918cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::ADDE: 91905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SUBE: ExpandIntRes_ADDSUBE(N, Lo, Hi); break; 92005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 921cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SHL: 922cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SRA: 92305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: ExpandIntRes_Shift(N, Lo, Hi); break; 924cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 925d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 926cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If Lo/Hi is null, the sub-method took care of registering results etc. 927ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Lo.getNode()) 928475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SetExpandedInteger(SDValue(N, ResNo), Lo, Hi); 929cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 930cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 93105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftByConstant - N is a shift by a value that needs to be expanded, 93205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// and the shift amount is a constant 'Amt'. Expand the operation. 93305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandShiftByConstant(SDNode *N, unsigned Amt, 934475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 93505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the incoming operand to be shifted, so that we have its parts 936475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 93705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 938cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 93905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = InL.getValueType(); 94005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned VTBits = N->getValueType(0).getSizeInBits(); 94105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 94205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = N->getOperand(1).getValueType(); 943cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 94405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SHL) { 94505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 94605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = Hi = DAG.getConstant(0, NVT); 94705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 94805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 94905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Amt-NVTBits,ShTy)); 95005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 95105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 95205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = InL; 95305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == 1) { 95405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Emit this X << 1 as X+X. 95505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); 956475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { InL, InL }; 95705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 958475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { InH, InH, Lo.getValue(1) }; 95905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 96005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 96105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Amt, ShTy)); 96205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 96305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 96405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 96505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 96605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 96705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 96805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 969cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 970cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 97105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::SRL) { 97205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 97305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); 97405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 97505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 97605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Amt-NVTBits,ShTy)); 97705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 97805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 97905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 98005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 98105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 98205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::OR, NVT, 98305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 98405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 98505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 98605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 98705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Amt, ShTy)); 98805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 98905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return; 990cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 991d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 99205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 99305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Amt > VTBits) { 99405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = Lo = DAG.getNode(ISD::SRA, NVT, InH, 99505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 99605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt > NVTBits) { 99705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRA, NVT, InH, 99805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt-NVTBits, ShTy)); 99905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, 100005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 100105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else if (Amt == NVTBits) { 100205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = InH; 100305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, 100405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 1005d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } else { 100605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::OR, NVT, 100705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SRL, NVT, InL, 100805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Amt, ShTy)), 100905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::SHL, NVT, InH, 101005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-Amt, ShTy))); 101105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, DAG.getConstant(Amt, ShTy)); 1012d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands } 1013d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands} 1014d885dbdf9eb7a51ebb9a15a85921f27d8219997cDuncan Sands 101505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandShiftWithKnownAmountBit - Try to determine whether we can simplify 101605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// this shift based on knowledge of the high bit of the shift amount. If we 101705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// can tell this, we know that it is >= 32 or < 32, without knowing the actual 101805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// shift amount. 101905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer:: 1020475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi) { 1021475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt = N->getOperand(1); 102283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 102305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT ShTy = Amt.getValueType(); 102405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ShBits = ShTy.getSizeInBits(); 102505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 102605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(isPowerOf2_32(NVTBits) && 102705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Expanded integer type size not a power of two!"); 1028cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 102905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt HighBitMask = APInt::getHighBitsSet(ShBits, ShBits - Log2_32(NVTBits)); 103005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt KnownZero, KnownOne; 103105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.ComputeMaskedBits(N->getOperand(1), HighBitMask, KnownZero, KnownOne); 1032cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 103305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we don't know anything about the high bits, exit. 103405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (((KnownZero|KnownOne) & HighBitMask) == 0) 103505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 1036cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 103705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get the incoming operand to be shifted. 1038475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 103905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 1040be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands 104105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that any of the high bits of the shift amount are one, then we 104205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 104305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (KnownOne.intersects(HighBitMask)) { 104405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mask out the high bit, which we know is set. 104505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt = DAG.getNode(ISD::AND, ShTy, Amt, 104605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(~HighBitMask, ShTy)); 104705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 104805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 104905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: assert(0 && "Unknown shift"); 105005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: 105105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(0, NVT); // Low part is zero. 105205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SHL, NVT, InL, Amt); // High part from Lo part. 105305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 105405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 105505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // Hi part is zero. 105605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRL, NVT, InH, Amt); // Lo part from Hi part. 105705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 105805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: 105905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, InH, // Sign extend high part. 106005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits-1, ShTy)); 106105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SRA, NVT, InH, Amt); // Lo part from Hi part. 106205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 106305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 106405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 106505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 106605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If we know that all of the high bits of the shift amount are zero, then we 106705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // can do this as a couple of simple shifts. 106805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if ((KnownZero & HighBitMask) == HighBitMask) { 106905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Compute 32-amt. 1070475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Amt2 = DAG.getNode(ISD::SUB, ShTy, 107105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVTBits, ShTy), 107205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Amt); 107305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned Op1, Op2; 107405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 107505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: assert(0 && "Unknown shift"); 107605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SHL: Op1 = ISD::SHL; Op2 = ISD::SRL; break; 107705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRL: 107805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SRA: Op1 = ISD::SRL; Op2 = ISD::SHL; break; 107905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 108005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 108105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), NVT, InL, Amt); 108205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::OR, NVT, 108305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op1, NVT, InH, Amt), 108405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(Op2, NVT, InL, Amt2)); 108505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 108605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 108705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 108805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 108905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 109005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 109105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUB(SDNode *N, 1092475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 109305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1094475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 109505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 109605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 109705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1098475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1099475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 110005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 110105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::ADD) { 110205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 110305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 110405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 110505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 110605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SUBC, VTList, LoOps, 2); 110705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 110805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SUBE, VTList, HiOps, 3); 110905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 111005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 111105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 111205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBC(SDNode *N, 1113475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 111405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1115475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 111605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 111705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 111805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1119475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[2] = { LHSL, RHSL }; 1120475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 112105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 112205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (N->getOpcode() == ISD::ADDC) { 112305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2); 112405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 112505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::ADDE, VTList, HiOps, 3); 112605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 112705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SUBC, VTList, LoOps, 2); 112805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 112905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SUBE, VTList, HiOps, 3); 113005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 113105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 113205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Legalized the flag result - switch anything that used the old flag to 113305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // use the new one. 1134475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 113505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 113605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 113705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ADDSUBE(SDNode *N, 1138475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 113905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Expand the subcomponents. 1140475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH, RHSL, RHSH; 114105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 114205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(1), RHSL, RHSH); 114305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); 1144475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoOps[3] = { LHSL, RHSL, N->getOperand(2) }; 1145475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiOps[3] = { LHSH, RHSH }; 114605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 114705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(N->getOpcode(), VTList, LoOps, 3); 114805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands HiOps[2] = Lo.getValue(1); 114905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(N->getOpcode(), VTList, HiOps, 3); 115005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 115105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Legalized the flag result - switch anything that used the old flag to 115205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // use the new one. 1153475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Hi.getValue(1)); 115405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 115505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 115605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ANY_EXTEND(SDNode *N, 1157475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 115805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1159475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 116005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 116105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is any extension of the input (which degenerates to a copy). 116205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ANY_EXTEND, NVT, Op); 116305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::UNDEF, NVT); // The high part is undefined. 116405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 116505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 116605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 116705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 116805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1169475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 117005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 117105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 117205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 117305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 117405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 117505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 117605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 117795db39a9de48f69f4d764335b492b83a698c7854Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertSext(SDNode *N, 1178475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 117995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 118095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT NVT = Lo.getValueType(); 118195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 118295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned NVTBits = NVT.getSizeInBits(); 118395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands unsigned EVTBits = EVT.getSizeInBits(); 118495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 118595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands if (NVTBits < EVTBits) { 118695db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Hi = DAG.getNode(ISD::AssertSext, NVT, Hi, 118795db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 118895db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } else { 118995db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Lo = DAG.getNode(ISD::AssertSext, NVT, Lo, DAG.getValueType(EVT)); 119095db39a9de48f69f4d764335b492b83a698c7854Duncan Sands // The high part replicates the sign bit of Lo, make it explicit. 119195db39a9de48f69f4d764335b492b83a698c7854Duncan Sands Hi = DAG.getNode(ISD::SRA, NVT, Lo, 119295db39a9de48f69f4d764335b492b83a698c7854Duncan Sands DAG.getConstant(NVTBits-1, TLI.getShiftAmountTy())); 119395db39a9de48f69f4d764335b492b83a698c7854Duncan Sands } 119495db39a9de48f69f4d764335b492b83a698c7854Duncan Sands} 119595db39a9de48f69f4d764335b492b83a698c7854Duncan Sands 119605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_AssertZext(SDNode *N, 1197475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 119805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 119905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 120005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 120105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NVTBits = NVT.getSizeInBits(); 120205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned EVTBits = EVT.getSizeInBits(); 120305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 120405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (NVTBits < EVTBits) { 120505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::AssertZext, NVT, Hi, 120605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(EVTBits - NVTBits))); 120705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 120805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::AssertZext, NVT, Lo, DAG.getValueType(EVT)); 120905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part must be zero, make it explicit. 121005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 121105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 121205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 121305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 121405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_BSWAP(SDNode *N, 1215475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 121605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Hi, Lo); // Note swapped operands. 121705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::BSWAP, Lo.getValueType(), Lo); 121805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::BSWAP, Hi.getValueType(), Hi); 121905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 122005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 122105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Constant(SDNode *N, 1222475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 122305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 122405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned NBitWidth = NVT.getSizeInBits(); 122505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const APInt &Cst = cast<ConstantSDNode>(N)->getAPIntValue(); 122605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getConstant(APInt(Cst).trunc(NBitWidth), NVT); 122705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(Cst.lshr(NBitWidth).trunc(NBitWidth), NVT); 122805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 122905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 123005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTLZ(SDNode *N, 1231475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 123205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctlz (HiLo) -> Hi != 0 ? ctlz(Hi) : (ctlz(Lo)+32) 123305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 123405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 123505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1236475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiNotZero = DAG.getSetCC(TLI.getSetCCResultType(Hi), Hi, 1237ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 123805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1239475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoLZ = DAG.getNode(ISD::CTLZ, NVT, Lo); 1240475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiLZ = DAG.getNode(ISD::CTLZ, NVT, Hi); 124105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 124205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SELECT, NVT, HiNotZero, HiLZ, 124305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::ADD, NVT, LoLZ, 124405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 124505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 124605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 124705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 124805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTPOP(SDNode *N, 1249475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 125005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // ctpop(HiLo) -> ctpop(Hi)+ctpop(Lo) 125105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 125205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 125305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ADD, NVT, DAG.getNode(ISD::CTPOP, NVT, Lo), 125405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::CTPOP, NVT, Hi)); 125505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 125605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 125705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 125805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_CTTZ(SDNode *N, 1259475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 126005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // cttz (HiLo) -> Lo != 0 ? cttz(Lo) : (cttz(Hi)+32) 126105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 126205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = Lo.getValueType(); 126305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1264475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoNotZero = DAG.getSetCC(TLI.getSetCCResultType(Lo), Lo, 1265ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, NVT), ISD::SETNE); 126605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1267475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LoLZ = DAG.getNode(ISD::CTTZ, NVT, Lo); 1268475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue HiLZ = DAG.getNode(ISD::CTTZ, NVT, Hi); 126905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 127005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SELECT, NVT, LoNotZero, LoLZ, 127105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getNode(ISD::ADD, NVT, HiLZ, 127205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), NVT))); 127305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); 127405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 127505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1276475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_SINT(SDNode *N, SDValue &Lo, 1277475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 127805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1279475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1280b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOSINT(Op.getValueType(), VT); 1281be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-sint conversion!"); 128241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, &Op, 1, true/*sign irrelevant*/), Lo, Hi); 1283ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1284ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 1285475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo, 1286475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Hi) { 128783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 1288475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 1289b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getFPTOUINT(Op.getValueType(), VT); 1290be1ad4de2900451626c8d4ace07b9ea16099ea1dDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-uint conversion!"); 129141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, &Op, 1, false/*sign irrelevant*/), Lo, Hi); 1292ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1293ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 129469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_LOAD(LoadSDNode *N, 1295475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1296ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalLoad(N)) { 1297ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands ExpandRes_NormalLoad(N, Lo, Hi); 129878cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands return; 129978cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands } 130078cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 130178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); 130278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 130383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 130483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1305475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 1306475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 1307cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::LoadExtType ExtType = N->getExtensionType(); 1308cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 1309cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 1310cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 1311cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 131278cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1313cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 131478cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 131583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 1316cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1317cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, EVT, 1318cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1319cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1320cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Remember the chain. 1321cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = Lo.getValue(1); 1322cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1323cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExtType == ISD::SEXTLOAD) { 1324cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is obtained by SRA'ing all but one of the bits of the 1325cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // lo part. 132683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned LoSize = Lo.getValueType().getSizeInBits(); 1327cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::SRA, NVT, Lo, 1328cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(LoSize-1, TLI.getShiftAmountTy())); 1329cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (ExtType == ISD::ZEXTLOAD) { 1330cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is just a zero. 1331cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getConstant(0, NVT); 1332cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1333cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(ExtType == ISD::EXTLOAD && "Unknown extload!"); 1334cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The high part is undefined. 1335cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::UNDEF, NVT); 1336cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1337cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 1338cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 1339cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getLoad(NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 1340cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1341cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1342cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 134383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 134483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 1345cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1346cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 134783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1348cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 13490bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1350cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), 1351cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 1352cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1353cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1354cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1355cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1356cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1357cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1358cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1359cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned loads at 1360cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 136183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 136283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 136383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1364cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 1365cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1366cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load both the high bits and maybe some of the low bits. 1367cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getExtLoad(ExtType, NVT, Ch, Ptr, N->getSrcValue(), SVOffset, 136883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits), 1369cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1370cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1371cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 1372cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 13730bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1374cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Load the rest of the low bits. 1375cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, NVT, Ch, Ptr, N->getSrcValue(), 137683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SVOffset+IncrementSize, 137783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 1378cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1379cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1380cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Build a factor node to remember that this load is independent of the 1381cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // other one. 1382cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ch = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1383cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi.getValue(1)); 1384cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 138583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 1386cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer low bits from the bottom of Hi to the top of Lo. 1387cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::OR, NVT, Lo, 1388cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getNode(ISD::SHL, NVT, Hi, 1389cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 1390cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy()))); 1391cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Move high bits to the right position in Hi. 1392cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ExtType == ISD::SEXTLOAD ? ISD::SRA : ISD::SRL, NVT, Hi, 139383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 1394cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy())); 1395cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1396cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1397cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1398cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Legalized the chain result - switch anything that used the old chain to 1399cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // use the new one. 1400475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 1), Ch); 1401cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1402cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 140369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Logical(SDNode *N, 1404475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 1405475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 140669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 140769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 1408cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(N->getOpcode(), LL.getValueType(), LL, RL); 1409cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(N->getOpcode(), LL.getValueType(), LH, RH); 1410cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1411cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 141205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N, 1413475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 141405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 141505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 141669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1417cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasMULHS = TLI.isOperationLegal(ISD::MULHS, NVT); 1418cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasMULHU = TLI.isOperationLegal(ISD::MULHU, NVT); 1419cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasSMUL_LOHI = TLI.isOperationLegal(ISD::SMUL_LOHI, NVT); 1420cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool HasUMUL_LOHI = TLI.isOperationLegal(ISD::UMUL_LOHI, NVT); 1421cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU || HasMULHS || HasUMUL_LOHI || HasSMUL_LOHI) { 1422475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LL, LH, RL, RH; 142369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LL, LH); 142469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(1), RL, RH); 142583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned OuterBitSize = VT.getSizeInBits(); 1426e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands unsigned InnerBitSize = NVT.getSizeInBits(); 1427cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned LHSSB = DAG.ComputeNumSignBits(N->getOperand(0)); 1428cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned RHSSB = DAG.ComputeNumSignBits(N->getOperand(1)); 142969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1430e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands APInt HighMask = APInt::getHighBitsSet(OuterBitSize, InnerBitSize); 1431e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (DAG.MaskedValueIsZero(N->getOperand(0), HighMask) && 1432e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands DAG.MaskedValueIsZero(N->getOperand(1), HighMask)) { 1433cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The inputs are both zero-extended. 1434cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1435cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a umul_lohi. 1436cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::UMUL_LOHI, DAG.getVTList(NVT, NVT), LL, RL); 1437ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1438cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1439cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1440cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHU) { 1441cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhu+mul. 1442cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1443cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 1444cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1445cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1446cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1447e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (LHSSB > InnerBitSize && RHSSB > InnerBitSize) { 1448cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // The input values are both sign-extended. 1449cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasSMUL_LOHI) { 1450cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a smul_lohi. 1451cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::SMUL_LOHI, DAG.getVTList(NVT, NVT), LL, RL); 1452ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Hi = SDValue(Lo.getNode(), 1); 1453cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1454cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1455cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasMULHS) { 1456cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // We can emit a mulhs+mul. 1457cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1458cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::MULHS, NVT, LL, RL); 1459cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1460cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1461cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1462cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (HasUMUL_LOHI) { 1463cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Lo,Hi = umul LHS, RHS. 1464475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UMulLOHI = DAG.getNode(ISD::UMUL_LOHI, 1465cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getVTList(NVT, NVT), LL, RL); 1466cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = UMulLOHI; 1467cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = UMulLOHI.getValue(1); 1468cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 1469cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 1470cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 1471cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 1472cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1473cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 1474e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands if (HasMULHU) { 1475e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 1476e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 1477e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 1478e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 1479e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 1480e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 1481e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands return; 1482e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands } 1483cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 148441edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1485cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If nothing else, we can make a libcall. 14865ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 14875ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands if (VT == MVT::i32) 14885ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I32; 14895ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 1490e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands LC = RTLIB::MUL_I64; 14915ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 14925ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::MUL_I128; 14935ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported MUL!"); 1494e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands 1495475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 1496e9c80f4d576bf1ff682958d447c1a60fa9348da3Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true/*sign irrelevant*/), Lo, Hi); 149741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1498cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 149969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N, 1500475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 15015ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands MVT VT = N->getValueType(0); 15025ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 15035ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 15045ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands if (VT == MVT::i32) 15055ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I32; 15065ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i64) 15075ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I64; 15085ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands else if (VT == MVT::i128) 15095ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands LC = RTLIB::SDIV_I128; 15105ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!"); 15115ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands 1512475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 15135ac319ac7125b009adddcc49294d2e040c4a91e5Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true), Lo, Hi); 1514ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands} 1515ddc016cc8592fe5c9379feb42a1fb4fb63164a91Duncan Sands 151669b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N, 1517475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 151883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getValueType(0); 151969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 152069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands // If we can emit an efficient shift operation, do so now. Check to see if 1521cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the RHS is a constant. 1522cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N->getOperand(1))) 1523f5aeb1a8e4cf272c7348376d185ef8d8267653e0Dan Gohman return ExpandShiftByConstant(N, CN->getZExtValue(), Lo, Hi); 1524cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1525cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If we can determine that the high bit of the shift is zero or one, even if 1526cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the low bits are variable, emit this shift in an optimized form. 1527cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ExpandShiftWithKnownAmountBit(N, Lo, Hi)) 1528cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 152969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1530cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this target supports shift_PARTS, use it. First, map to the _PARTS opc. 1531cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned PartsOpc; 153241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 1533cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SHL_PARTS; 153441edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 1535cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRL_PARTS; 153641edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 1537cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 1538cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner PartsOpc = ISD::SRA_PARTS; 1539cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 154069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1541cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Next check to see if the target supports this SHL_PARTS operation or if it 1542cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // will custom expand it. 154383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1544cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::LegalizeAction Action = TLI.getOperationAction(PartsOpc, NVT); 1545cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if ((Action == TargetLowering::Legal && TLI.isTypeLegal(NVT)) || 1546cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Action == TargetLowering::Custom) { 1547cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Expand the subcomponents. 1548475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSL, LHSH; 154969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), LHSL, LHSH); 155069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1551475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { LHSL, LHSH, N->getOperand(1) }; 155283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = LHSL.getValueType(); 1553cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getNode(PartsOpc, DAG.getNodeValueTypes(VT, VT), 2, Ops, 3); 1554cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = Lo.getValue(1); 1555cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1556cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 155741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1558cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Otherwise, emit a libcall. 1559dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 156041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands bool isSigned; 156141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands if (N->getOpcode() == ISD::SHL) { 156241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; /*sign irrelevant*/ 1563dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1564dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I32; 1565dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1566dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I64; 1567dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1568dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SHL_I128; 156941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else if (N->getOpcode() == ISD::SRL) { 157041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = false; 1571dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1572dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I32; 1573dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1574dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I64; 1575dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1576dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRL_I128; 157741edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } else { 157841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands assert(N->getOpcode() == ISD::SRA && "Unknown shift!"); 157941edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands isSigned = true; 1580dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands if (VT == MVT::i32) 1581dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I32; 1582dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i64) 1583dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I64; 1584dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands else if (VT == MVT::i128) 1585dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands LC = RTLIB::SRA_I128; 158641edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands } 1587dddc6291fb5274282a20d5923b50535d456d34a4Duncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported shift!"); 158841edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1589475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 159041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, isSigned), Lo, Hi); 159141edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands} 1592cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 159305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SIGN_EXTEND(SDNode *N, 1594475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 159505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1596475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 159705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 159805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is sign extension of the input (which degenerates to a copy). 159905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SIGN_EXTEND, NVT, N->getOperand(0)); 160005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part is obtained by SRA'ing all but one of the bits of low part. 160105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned LoSize = NVT.getSizeInBits(); 160205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, NVT, Lo, 160305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(LoSize-1, TLI.getShiftAmountTy())); 160405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 160505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 160605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 160705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 160805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1609475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 161005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 161105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 161205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 161305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 161405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 161505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 161605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, Hi.getValueType(), Hi, 161705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 161805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 161905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 162005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 162105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer:: 1622475871a144eb604ddaf37503397ba0941442e5fbDan GohmanExpandIntRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi) { 162369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getOperand(0), Lo, Hi); 162405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT EVT = cast<VTSDNode>(N->getOperand(1))->getVT(); 1625d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 162605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (EVT.bitsLE(Lo.getValueType())) { 162705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the low part if needed. 162805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::SIGN_EXTEND_INREG, Lo.getValueType(), Lo, 162905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(1)); 1630d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 163105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The high part gets the sign extension from the lo-part. This handles 163205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // things like sextinreg V:i64 from i8. 163305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRA, Hi.getValueType(), Lo, 163405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(Hi.getValueType().getSizeInBits()-1, 163505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getShiftAmountTy())); 163605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 163705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. Leave the low part alone, 163805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // sext_inreg the high part. 163905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 164005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands EVT.getSizeInBits() - Lo.getValueType().getSizeInBits(); 164105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SIGN_EXTEND_INREG, Hi.getValueType(), Hi, 164205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getValueType(MVT::getIntegerVT(ExcessBits))); 164305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 164405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 1645d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 164605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N, 1647475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 164805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 164905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 165005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 165105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 165205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I32; 165305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 165405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I64; 165505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 165605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::SREM_I128; 165705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!"); 165805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1659475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 166005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, true), Lo, Hi); 1661d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1662d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 166305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_TRUNCATE(SDNode *N, 1664475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 166505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 166605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::TRUNCATE, NVT, N->getOperand(0)); 166705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::SRL, N->getOperand(0).getValueType(), N->getOperand(0), 166805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getConstant(NVT.getSizeInBits(), 166905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getShiftAmountTy())); 167005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getNode(ISD::TRUNCATE, NVT, Hi); 1671d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1672d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 167305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N, 1674475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 167505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 1676d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 167705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 167805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 167905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I32; 168005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 168105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I64; 168205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 168305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UDIV_I128; 168405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!"); 1685d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands 1686475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 168705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, false), Lo, Hi); 1688d462ba853981d45bf9c777564e79dc9e1c850ca6Duncan Sands} 1689cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 169005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N, 1691475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 169205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT VT = N->getValueType(0); 169369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 169405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 169505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (VT == MVT::i32) 169605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I32; 169705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i64) 169805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I64; 169905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (VT == MVT::i128) 170005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands LC = RTLIB::UREM_I128; 170105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!"); 1702cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1703475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; 170405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(MakeLibCall(LC, VT, Ops, 2, false), Lo, Hi); 1705cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1706cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 170705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsvoid DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N, 1708475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &Lo, SDValue &Hi) { 170983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); 1710475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 171105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (Op.getValueType().bitsLE(NVT)) { 171205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The low part is zero extension of the input (which degenerates to a copy). 171305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, N->getOperand(0)); 171405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getConstant(0, NVT); // The high part is just a zero. 171505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } else { 171605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // For example, extension of an i48 to an i64. The operand type necessarily 171705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // promotes to the result type, so will end up being expanded too. 171805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(getTypeAction(Op.getValueType()) == PromoteInteger && 171905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Only know how to promote this result!"); 1720475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = GetPromotedInteger(Op); 172105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && 172205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Operand over promoted?"); 172305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Split the promoted operand. This will simplify when it is expanded. 172405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SplitInteger(Res, Lo, Hi); 172505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands unsigned ExcessBits = 172605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Op.getValueType().getSizeInBits() - NVT.getSizeInBits(); 172705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands Hi = DAG.getZeroExtendInReg(Hi, MVT::getIntegerVT(ExcessBits)); 17289e255b7df5a0a629920706e086e78ef89bf2f183Dan Gohman } 1729cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1730cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1731cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1732cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 173369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands// Integer Operand Expansion 1734cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner//===----------------------------------------------------------------------===// 1735cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 173605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// ExpandIntegerOperand - This method is called when the specified operand of 173705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// the specified node is found to need expansion. At this point, all of the 173805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// result types of the node are known to be legal, but other operands of the 173905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands/// node may need promotion or expansion as well as the specified one. 174005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sandsbool DAGTypeLegalizer::ExpandIntegerOperand(SDNode *N, unsigned OpNo) { 174105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DEBUG(cerr << "Expand integer operand: "; N->dump(&DAG); cerr << "\n"); 1742475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Res = SDValue(); 1743051bb7b07504be9f848f7cce802e62ed24980bc5Duncan Sands 174405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) 174505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands == TargetLowering::Custom) 1746475871a144eb604ddaf37503397ba0941442e5fbDan Gohman Res = TLI.LowerOperation(SDValue(N, OpNo), DAG); 174711ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 1748ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == 0) { 174905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands switch (N->getOpcode()) { 175005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands default: 175105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #ifndef NDEBUG 175205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands cerr << "ExpandIntegerOperand Op #" << OpNo << ": "; 175305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->dump(&DAG); cerr << "\n"; 175405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands #endif 175505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(0 && "Do not know how to expand this operator's operand!"); 175605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands abort(); 175711ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 175805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; 175905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break; 176005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; 176111ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands 176205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::BR_CC: Res = ExpandIntOp_BR_CC(N); break; 176305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SELECT_CC: Res = ExpandIntOp_SELECT_CC(N); break; 176405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SETCC: Res = ExpandIntOp_SETCC(N); break; 176505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::SINT_TO_FP: Res = ExpandIntOp_SINT_TO_FP(N); break; 176605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::STORE: Res = ExpandIntOp_STORE(cast<StoreSDNode>(N), OpNo); 176705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands break; 176805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::TRUNCATE: Res = ExpandIntOp_TRUNCATE(N); break; 176905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands case ISD::UINT_TO_FP: Res = ExpandIntOp_UINT_TO_FP(N); break; 177005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 177105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 177269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 177305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is null, the sub-method took care of registering results etc. 1774ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Res.getNode()) return false; 177505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If the result is N, the sub-method updated N in place. Check to see if any 177605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // operands are new, and if so, mark them. 1777ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Res.getNode() == N) { 177805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Mark N as new and remark N and its operands. This allows us to correctly 177905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // revisit N if it needs another step of expansion and allows us to visit 178005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // any new operands to N. 178105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ReanalyzeNode(N); 178205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return true; 178311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 1784cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 178505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && 178605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Invalid operand expansion"); 178705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1788475871a144eb604ddaf37503397ba0941442e5fbDan Gohman ReplaceValueWith(SDValue(N, 0), Res); 178905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return false; 1790cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1791cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 179211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// IntegerExpandSetCCOperands - Expand the operands of a comparison. This code 179311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands/// is shared among BR_CC, SELECT_CC, and SETCC handlers. 1794475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanvoid DAGTypeLegalizer::IntegerExpandSetCCOperands(SDValue &NewLHS, 1795475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue &NewRHS, 179611ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands ISD::CondCode &CCCode) { 1797475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LHSLo, LHSHi, RHSLo, RHSHi; 179869b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewLHS, LHSLo, LHSHi); 179969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(NewRHS, RHSLo, RHSHi); 180041edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 180183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = NewLHS.getValueType(); 180241edfb8ae119d6cf6579046619dd2820ec876065Duncan Sands 1803cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (CCCode == ISD::SETEQ || CCCode == ISD::SETNE) { 180411ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (RHSLo == RHSHi) { 180511ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands if (ConstantSDNode *RHSCST = dyn_cast<ConstantSDNode>(RHSLo)) { 1806cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (RHSCST->isAllOnesValue()) { 1807cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Equality comparison to -1. 1808cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::AND, LHSLo.getValueType(), LHSLo, LHSHi); 1809cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSLo; 1810cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1811cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 181211ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 181311ac797f5ed142f11aafde3dd76c28a73d84282eDuncan Sands } 181469b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1815cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSLo, RHSLo); 1816cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSHi, RHSHi); 1817cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::OR, NewLHS.getValueType(), NewLHS, NewRHS); 1818cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 1819cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1820cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 182169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1822cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // If this is a comparison of the sign bit, just look at the top part. 1823cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // X > -1, x < 0 1824cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(NewRHS)) 1825002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((CCCode == ISD::SETLT && CST->isNullValue()) || // X < 0 1826cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETGT && CST->isAllOnesValue())) { // X > -1 1827cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = LHSHi; 1828cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewRHS = RHSHi; 1829cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1830cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 183169b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1832cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // FIXME: This generated code sucks. 1833cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::CondCode LowCC; 1834cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner switch (CCCode) { 1835cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner default: assert(0 && "Unknown integer setcc!"); 1836cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLT: 1837cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 1838cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGT: 1839cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 1840cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETLE: 1841cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 1842cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETGE: 1843cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 1844cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 184569b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1846cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 1847cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 1848cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 184969b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1850cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 1851cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 1852cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TargetLowering::DAGCombinerInfo DagCombineInfo(DAG, false, true, NULL); 1853475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2; 18545b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp1 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, LowCC, 1855cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner false, DagCombineInfo); 1856ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp1.getNode()) 18575b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, LowCC); 18585b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp2 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1859cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode, false, DagCombineInfo); 1860ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!Tmp2.getNode()) 18615b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel Tmp2 = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1862cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getCondCode(CCCode)); 186369b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 1864ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp1C = dyn_cast<ConstantSDNode>(Tmp1.getNode()); 1865ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif ConstantSDNode *Tmp2C = dyn_cast<ConstantSDNode>(Tmp2.getNode()); 1866002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman if ((Tmp1C && Tmp1C->isNullValue()) || 1867002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->isNullValue() && 1868cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLE || CCCode == ISD::SETGE || 1869cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGE || CCCode == ISD::SETULE)) || 1870002e5d0a170dadd5c307e0b00d8c7970835837e6Dan Gohman (Tmp2C && Tmp2C->getAPIntValue() == 1 && 1871cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner (CCCode == ISD::SETLT || CCCode == ISD::SETGT || 1872cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner CCCode == ISD::SETUGT || CCCode == ISD::SETULT))) { 1873cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // low part is known false, returns high part. 1874cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LE / GE, if high part is known false, ignore the low part. 1875cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // For LT / GT, if high part is known true, ignore the low part. 1876cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = Tmp2; 1877475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 1878cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return; 1879cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 188069b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands 18815b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel NewLHS = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 1882cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner ISD::SETEQ, false, DagCombineInfo); 1883ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (!NewLHS.getNode()) 18845b8f82e35b51bf007de07a7ca9347d804084ddf8Scott Michel NewLHS = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, 188571a2cb25ebc818383dd0f80475bc166f834e8d99Chris Lattner ISD::SETEQ); 1886cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS = DAG.getNode(ISD::SELECT, Tmp1.getValueType(), 1887cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner NewLHS, Tmp1, Tmp2); 1888475871a144eb604ddaf37503397ba0941442e5fbDan Gohman NewRHS = SDValue(); 1889cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 1890cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1891475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_BR_CC(SDNode *N) { 1892475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); 189305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); 189405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 189505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 189605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 189705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 1898ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 189905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 190005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 190105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 190205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 190305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 1904475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), 190505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode), NewLHS, NewRHS, 190605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(4)); 190705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 190805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1909475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SELECT_CC(SDNode *N) { 1910475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 191105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); 191205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 191305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 191405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, we need to compare the result 191505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // against zero to select between true and false values. 1916ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 191705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands NewRHS = DAG.getConstant(0, NewLHS.getValueType()); 191805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands CCCode = ISD::SETNE; 191905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 192005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 192105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Update N to have the operands specified. 1922475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 192305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands N->getOperand(2), N->getOperand(3), 192405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 192505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 192605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1927475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SETCC(SDNode *N) { 1928475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); 192905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); 193005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands IntegerExpandSetCCOperands(NewLHS, NewRHS, CCCode); 193105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 193205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // If ExpandSetCCOperands returned a scalar, use it. 1933ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (NewRHS.getNode() == 0) { 193405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(NewLHS.getValueType() == N->getValueType(0) && 193505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Unexpected setcc expansion!"); 193605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return NewLHS; 193705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 193805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 193905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, update N to have the operands specified. 1940475871a144eb604ddaf37503397ba0941442e5fbDan Gohman return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, 194105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands DAG.getCondCode(CCCode)); 194205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 194305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1944475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) { 1945475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 194605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 1947b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), DstVT); 194805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 194905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this SINT_TO_FP!"); 195005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return MakeLibCall(LC, DstVT, &Op, 1, true); 195105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 195205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 1953475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo) { 1954ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands if (ISD::isNormalStore(N)) 1955ab09b7e8f34075c1759127a113f41bdf921f4034Duncan Sands return ExpandOp_NormalStore(N, OpNo); 195678cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands 195778cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); 1958cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner assert(OpNo == 1 && "Can only expand the stored value so far"); 1959cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 196083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = N->getOperand(1).getValueType(); 196183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToTransformTo(VT); 1962475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch = N->getChain(); 1963475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = N->getBasePtr(); 1964cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner int SVOffset = N->getSrcValueOffset(); 1965cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned Alignment = N->getAlignment(); 1966cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner bool isVolatile = N->isVolatile(); 1967475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 1968cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1969a1ace76c70ae5332d6f33fce5c0c1e2fdb8cca11Duncan Sands assert(NVT.isByteSized() && "Expanded type not byte sized!"); 1970cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 197178cd649ad326f79a1f8424ca2b63cea3239a9a52Duncan Sands if (N->getMemoryVT().bitsLE(NVT)) { 197269b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 1973cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getTruncStore(Ch, Lo, Ptr, N->getSrcValue(), SVOffset, 1974b625f2f8960de32bc973092aaee8ac62863006feDan Gohman N->getMemoryVT(), isVolatile, Alignment); 1975cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else if (TLI.isLittleEndian()) { 1976cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Little-endian - low bits are at low addresses. 197769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 1978cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1979cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getStore(Ch, Lo, Ptr, N->getSrcValue(), SVOffset, 1980cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, Alignment); 1981cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1982cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = 198383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands N->getMemoryVT().getSizeInBits() - NVT.getSizeInBits(); 198483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NEVT = MVT::getIntegerVT(ExcessBits); 1985cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 1986cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 198783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 1988cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 19890bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 1990cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getTruncStore(Ch, Hi, Ptr, N->getSrcValue(), 1991cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, NEVT, 1992cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 1993cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 1994cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } else { 1995cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Big-endian - high bits are at low addresses. Favor aligned stores at 1996cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // the cost of some bit-fiddling. 199769b01e92a29ce6d7e435171aeea3fbc987b81586Duncan Sands GetExpandedInteger(N->getValue(), Lo, Hi); 1998cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 199983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EVT = N->getMemoryVT(); 200083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EBytes = EVT.getStoreSizeInBits()/8; 200183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned IncrementSize = NVT.getSizeInBits()/8; 2002cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner unsigned ExcessBits = (EBytes - IncrementSize)*8; 200383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT HiVT = MVT::getIntegerVT(EVT.getSizeInBits() - ExcessBits); 2004cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 200583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ExcessBits < NVT.getSizeInBits()) { 2006cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Transfer high bits from the top of Lo to the bottom of Hi. 2007cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::SHL, NVT, Hi, 200883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(NVT.getSizeInBits() - ExcessBits, 2009cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy())); 2010cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getNode(ISD::OR, NVT, Hi, 2011cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getNode(ISD::SRL, NVT, Lo, 2012cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner DAG.getConstant(ExcessBits, 2013cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner TLI.getShiftAmountTy()))); 2014cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2015cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2016cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store both the high bits and maybe some of the low bits. 2017cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Hi = DAG.getTruncStore(Ch, Hi, Ptr, N->getSrcValue(), 2018cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset, HiVT, isVolatile, Alignment); 2019cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner 2020cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Increment the pointer to the other half. 2021cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 20220bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(IncrementSize)); 2023cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner // Store the lowest ExcessBits bits in the second half. 2024cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner Lo = DAG.getTruncStore(Ch, Lo, Ptr, N->getSrcValue(), 2025cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner SVOffset+IncrementSize, 202683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT::getIntegerVT(ExcessBits), 2027cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner isVolatile, MinAlign(Alignment, IncrementSize)); 2028cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner return DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 2029cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner } 2030cc663a8112017f06e0cd4b6fe1546ccfcd5d05c3Chris Lattner} 203105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2032475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_TRUNCATE(SDNode *N) { 2033475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InL, InH; 203405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(N->getOperand(0), InL, InH); 203505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Just truncate the low part of the source. 203605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return DAG.getNode(ISD::TRUNCATE, N->getValueType(0), InL); 203705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 203805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 2039475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) { 2040475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op = N->getOperand(0); 204105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT SrcVT = Op.getValueType(); 204205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands MVT DstVT = N->getValueType(0); 204305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 204405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.getOperationAction(ISD::SINT_TO_FP, SrcVT) == TargetLowering::Custom){ 204505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Do a signed conversion then adjust the result. 2046475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignedConv = DAG.getNode(ISD::SINT_TO_FP, DstVT, Op); 204705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands SignedConv = TLI.LowerOperation(SignedConv, DAG); 204805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 204905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // The result of the signed conversion needs adjusting if the 'sign bit' of 205005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // the incoming integer was set. To handle this, we dynamically test to see 205105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // if it is set, and, if so, add a fudge factor. 205205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 205305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE32 = 0x4F800000ULL; 205405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE64 = 0x5F800000ULL; 205505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands const uint64_t F32TwoE128 = 0x7F800000ULL; 205605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 205705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands APInt FF(32, 0); 205805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (SrcVT == MVT::i32) 205905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE32); 206005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i64) 206105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE64); 206205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else if (SrcVT == MVT::i128) 206305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FF = APInt(32, F32TwoE128); 206405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands else 206505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(false && "Unsupported UINT_TO_FP!"); 206605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 206705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Check whether the sign bit is set. 2068475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 206905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands GetExpandedInteger(Op, Lo, Hi); 2070475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignSet = DAG.getSetCC(TLI.getSetCCResultType(Hi), Hi, 2071ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands DAG.getConstant(0, Hi.getValueType()), 2072ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands ISD::SETLT); 207305c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 207405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Build a 64 bit pair (0, FF) in the constant pool, with FF in the lo bits. 2075475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgePtr = DAG.getConstantPool(ConstantInt::get(FF.zext(64)), 207605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands TLI.getPointerTy()); 207705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 207805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Get a pointer to FF if the sign bit was set, or to 0 otherwise. 2079475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0); 2080475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Four = DAG.getIntPtrConstant(4); 208105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands if (TLI.isBigEndian()) std::swap(Zero, Four); 2082475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset = DAG.getNode(ISD::SELECT, Zero.getValueType(), SignSet, 2083ef5b199905cee0b78eb30cd44836e5b6ca5cbd09Duncan Sands Zero, Four); 208487a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman unsigned Alignment = 208587a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman 1 << cast<ConstantPoolSDNode>(FudgePtr)->getAlignment(); 208605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands FudgePtr = DAG.getNode(ISD::ADD, TLI.getPointerTy(), FudgePtr, Offset); 208787a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 208805c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 208905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Load the value out, extending it from f32 to the destination float type. 209005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // FIXME: Avoid the extend by constructing the right constant pool? 2091475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Fudge = DAG.getExtLoad(ISD::EXTLOAD, DstVT, DAG.getEntryNode(), 209287a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman FudgePtr, NULL, 0, MVT::f32, 209387a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman false, Alignment); 209405c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return DAG.getNode(ISD::FADD, DstVT, SignedConv, Fudge); 209505c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands } 209605c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands 209705c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands // Otherwise, use a libcall. 2098b2ff885aaed8f9b033b16ca78d645650efc32433Duncan Sands RTLIB::Libcall LC = RTLIB::getUINTTOFP(SrcVT, DstVT); 209905c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands assert(LC != RTLIB::UNKNOWN_LIBCALL && 210005c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands "Don't know how to expand this UINT_TO_FP!"); 210105c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands return MakeLibCall(LC, DstVT, &Op, 1, true); 210205c397d52a145c8844790d6491c4c51d4bbfed7cDuncan Sands} 2103