X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FIR%2FAutoUpgrade.cpp;h=8910564493ee4386cac5eb07ef3a0673beb90b3d;hp=a4f5289e5eb8c446f03d9ab6609bd47ba9a2a863;hb=042dd34f9cb1fb17873116c7560f2f011c10a9b8;hpb=3f49322818a3f2b9ca6fe75f49c7541c8dfb538d diff --git a/lib/IR/AutoUpgrade.cpp b/lib/IR/AutoUpgrade.cpp index a4f5289e5eb..8910564493e 100644 --- a/lib/IR/AutoUpgrade.cpp +++ b/lib/IR/AutoUpgrade.cpp @@ -7,20 +7,25 @@ // //===----------------------------------------------------------------------===// // -// This file implements the auto-upgrade helper functions +// This file implements the auto-upgrade helper functions. +// This is where deprecated IR intrinsics and other IR features are updated to +// current specifications. // //===----------------------------------------------------------------------===// -#include "llvm/AutoUpgrade.h" +#include "llvm/IR/AutoUpgrade.h" +#include "llvm/IR/CFG.h" +#include "llvm/IR/CallSite.h" #include "llvm/IR/Constants.h" +#include "llvm/IR/DIBuilder.h" +#include "llvm/IR/DebugInfo.h" +#include "llvm/IR/DiagnosticInfo.h" #include "llvm/IR/Function.h" #include "llvm/IR/IRBuilder.h" #include "llvm/IR/Instruction.h" #include "llvm/IR/IntrinsicInst.h" #include "llvm/IR/LLVMContext.h" #include "llvm/IR/Module.h" -#include "llvm/Support/CFG.h" -#include "llvm/Support/CallSite.h" #include "llvm/Support/ErrorHandling.h" #include using namespace llvm; @@ -41,6 +46,22 @@ static bool UpgradeSSE41Function(Function* F, Intrinsic::ID IID, return true; } +// Upgrade the declarations of intrinsic functions whose 8-bit immediate mask +// arguments have changed their type from i32 to i8. +static bool UpgradeX86IntrinsicsWith8BitMask(Function *F, Intrinsic::ID IID, + Function *&NewFn) { + // Check that the last argument is an i32. + Type *LastArgType = F->getFunctionType()->getParamType( + F->getFunctionType()->getNumParams() - 1); + if (!LastArgType->isIntegerTy(32)) + return false; + + // Move this function aside and map down. + F->setName(F->getName() + ".old"); + NewFn = Intrinsic::getDeclaration(F->getParent(), IID); + return true; +} + static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) { assert(F && "Illegal to upgrade a non-existent Function."); @@ -88,17 +109,61 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) { } break; } + + case 'o': + // We only need to change the name to match the mangling including the + // address space. + if (F->arg_size() == 2 && Name.startswith("objectsize.")) { + Type *Tys[2] = { F->getReturnType(), F->arg_begin()->getType() }; + if (F->getName() != Intrinsic::getName(Intrinsic::objectsize, Tys)) { + F->setName(Name + ".old"); + NewFn = Intrinsic::getDeclaration(F->getParent(), + Intrinsic::objectsize, Tys); + return true; + } + } + break; + case 'x': { if (Name.startswith("x86.sse2.pcmpeq.") || Name.startswith("x86.sse2.pcmpgt.") || Name.startswith("x86.avx2.pcmpeq.") || Name.startswith("x86.avx2.pcmpgt.") || Name.startswith("x86.avx.vpermil.") || + Name == "x86.avx.vinsertf128.pd.256" || + Name == "x86.avx.vinsertf128.ps.256" || + Name == "x86.avx.vinsertf128.si.256" || + Name == "x86.avx2.vinserti128" || + Name == "x86.avx.vextractf128.pd.256" || + Name == "x86.avx.vextractf128.ps.256" || + Name == "x86.avx.vextractf128.si.256" || + Name == "x86.avx2.vextracti128" || Name == "x86.avx.movnt.dq.256" || Name == "x86.avx.movnt.pd.256" || Name == "x86.avx.movnt.ps.256" || + Name == "x86.sse42.crc32.64.8" || + Name == "x86.avx.vbroadcast.ss" || + Name == "x86.avx.vbroadcast.ss.256" || + Name == "x86.avx.vbroadcast.sd.256" || + Name == "x86.sse2.psll.dq" || + Name == "x86.sse2.psrl.dq" || + Name == "x86.avx2.psll.dq" || + Name == "x86.avx2.psrl.dq" || + Name == "x86.sse2.psll.dq.bs" || + Name == "x86.sse2.psrl.dq.bs" || + Name == "x86.avx2.psll.dq.bs" || + Name == "x86.avx2.psrl.dq.bs" || + Name == "x86.sse41.pblendw" || + Name == "x86.sse41.blendpd" || + Name == "x86.sse41.blendps" || + Name == "x86.avx.blend.pd.256" || + Name == "x86.avx.blend.ps.256" || + Name == "x86.avx2.pblendw" || + Name == "x86.avx2.pblendd.128" || + Name == "x86.avx2.pblendd.256" || + Name == "x86.avx2.vbroadcasti128" || (Name.startswith("x86.xop.vpcom") && F->arg_size() == 2)) { - NewFn = 0; + NewFn = nullptr; return true; } // SSE4.1 ptest functions may have an old signature. @@ -110,6 +175,27 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) { if (Name == "x86.sse41.ptestnzc") return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestnzc, NewFn); } + // Several blend and other instructions with masks used the wrong number of + // bits. + if (Name == "x86.sse41.insertps") + return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_insertps, + NewFn); + if (Name == "x86.sse41.dppd") + return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_dppd, + NewFn); + if (Name == "x86.sse41.dpps") + return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_dpps, + NewFn); + if (Name == "x86.sse41.mpsadbw") + return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_sse41_mpsadbw, + NewFn); + if (Name == "x86.avx.dp.ps.256") + return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_avx_dp_ps_256, + NewFn); + if (Name == "x86.avx2.mpsadbw") + return UpgradeX86IntrinsicsWith8BitMask(F, Intrinsic::x86_avx2_mpsadbw, + NewFn); + // frcz.ss/sd may need to have an argument dropped if (Name.startswith("x86.xop.vfrcz.ss") && F->arg_size() == 2) { F->setName(Name + ".old"); @@ -141,7 +227,7 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) { } bool llvm::UpgradeIntrinsicFunction(Function *F, Function *&NewFn) { - NewFn = 0; + NewFn = nullptr; bool Upgraded = UpgradeIntrinsicFunction1(F, NewFn); // Upgrade intrinsic attributes. This does not change the function. @@ -158,6 +244,80 @@ bool llvm::UpgradeGlobalVariable(GlobalVariable *GV) { return false; } +// Handles upgrading SSE2 and AVX2 PSLLDQ intrinsics by converting them +// to byte shuffles. +static Value *UpgradeX86PSLLDQIntrinsics(IRBuilder<> &Builder, LLVMContext &C, + Value *Op, unsigned NumLanes, + unsigned Shift) { + // Each lane is 16 bytes. + unsigned NumElts = NumLanes * 16; + + // Bitcast from a 64-bit element type to a byte element type. + Op = Builder.CreateBitCast(Op, + VectorType::get(Type::getInt8Ty(C), NumElts), + "cast"); + // We'll be shuffling in zeroes. + Value *Res = ConstantVector::getSplat(NumElts, Builder.getInt8(0)); + + // If shift is less than 16, emit a shuffle to move the bytes. Otherwise, + // we'll just return the zero vector. + if (Shift < 16) { + SmallVector Idxs; + // 256-bit version is split into two 16-byte lanes. + for (unsigned l = 0; l != NumElts; l += 16) + for (unsigned i = 0; i != 16; ++i) { + unsigned Idx = NumElts + i - Shift; + if (Idx < NumElts) + Idx -= NumElts - 16; // end of lane, switch operand. + Idxs.push_back(Builder.getInt32(Idx + l)); + } + + Res = Builder.CreateShuffleVector(Res, Op, ConstantVector::get(Idxs)); + } + + // Bitcast back to a 64-bit element type. + return Builder.CreateBitCast(Res, + VectorType::get(Type::getInt64Ty(C), 2*NumLanes), + "cast"); +} + +// Handles upgrading SSE2 and AVX2 PSRLDQ intrinsics by converting them +// to byte shuffles. +static Value *UpgradeX86PSRLDQIntrinsics(IRBuilder<> &Builder, LLVMContext &C, + Value *Op, unsigned NumLanes, + unsigned Shift) { + // Each lane is 16 bytes. + unsigned NumElts = NumLanes * 16; + + // Bitcast from a 64-bit element type to a byte element type. + Op = Builder.CreateBitCast(Op, + VectorType::get(Type::getInt8Ty(C), NumElts), + "cast"); + // We'll be shuffling in zeroes. + Value *Res = ConstantVector::getSplat(NumElts, Builder.getInt8(0)); + + // If shift is less than 16, emit a shuffle to move the bytes. Otherwise, + // we'll just return the zero vector. + if (Shift < 16) { + SmallVector Idxs; + // 256-bit version is split into two 16-byte lanes. + for (unsigned l = 0; l != NumElts; l += 16) + for (unsigned i = 0; i != 16; ++i) { + unsigned Idx = i + Shift; + if (Idx >= 16) + Idx += NumElts - 16; // end of lane, switch operand. + Idxs.push_back(Builder.getInt32(Idx + l)); + } + + Res = Builder.CreateShuffleVector(Op, Res, ConstantVector::get(Idxs)); + } + + // Bitcast back to a 64-bit element type. + return Builder.CreateBitCast(Res, + VectorType::get(Type::getInt64Ty(C), 2*NumLanes), + "cast"); +} + // UpgradeIntrinsicCall - Upgrade a call to an old intrinsic to be a call the // upgraded intrinsic. All argument and return casting must be provided in // order to seamlessly integrate with existing context. @@ -194,8 +354,9 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { Builder.SetInsertPoint(CI->getParent(), CI); Module *M = F->getParent(); - SmallVector Elts; - Elts.push_back(ConstantInt::get(Type::getInt32Ty(C), 1)); + SmallVector Elts; + Elts.push_back( + ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(C), 1))); MDNode *Node = MDNode::get(C, Elts); Value *Arg0 = CI->getArgOperand(0); @@ -247,16 +408,173 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { Imm = 4; else if (Name.startswith("ne")) Imm = 5; - else if (Name.startswith("true")) - Imm = 6; else if (Name.startswith("false")) + Imm = 6; + else if (Name.startswith("true")) Imm = 7; else llvm_unreachable("Unknown condition"); Function *VPCOM = Intrinsic::getDeclaration(F->getParent(), intID); - Rep = Builder.CreateCall3(VPCOM, CI->getArgOperand(0), - CI->getArgOperand(1), Builder.getInt8(Imm)); + Rep = + Builder.CreateCall(VPCOM, {CI->getArgOperand(0), CI->getArgOperand(1), + Builder.getInt8(Imm)}); + } else if (Name == "llvm.x86.sse42.crc32.64.8") { + Function *CRC32 = Intrinsic::getDeclaration(F->getParent(), + Intrinsic::x86_sse42_crc32_32_8); + Value *Trunc0 = Builder.CreateTrunc(CI->getArgOperand(0), Type::getInt32Ty(C)); + Rep = Builder.CreateCall(CRC32, {Trunc0, CI->getArgOperand(1)}); + Rep = Builder.CreateZExt(Rep, CI->getType(), ""); + } else if (Name.startswith("llvm.x86.avx.vbroadcast")) { + // Replace broadcasts with a series of insertelements. + Type *VecTy = CI->getType(); + Type *EltTy = VecTy->getVectorElementType(); + unsigned EltNum = VecTy->getVectorNumElements(); + Value *Cast = Builder.CreateBitCast(CI->getArgOperand(0), + EltTy->getPointerTo()); + Value *Load = Builder.CreateLoad(Cast); + Type *I32Ty = Type::getInt32Ty(C); + Rep = UndefValue::get(VecTy); + for (unsigned I = 0; I < EltNum; ++I) + Rep = Builder.CreateInsertElement(Rep, Load, + ConstantInt::get(I32Ty, I)); + } else if (Name == "llvm.x86.avx2.vbroadcasti128") { + // Replace vbroadcasts with a vector shuffle. + Value *Op = Builder.CreatePointerCast( + CI->getArgOperand(0), + PointerType::getUnqual(VectorType::get(Type::getInt64Ty(C), 2))); + Value *Load = Builder.CreateLoad(Op); + const int Idxs[4] = { 0, 1, 0, 1 }; + Rep = Builder.CreateShuffleVector(Load, UndefValue::get(Load->getType()), + Idxs); + } else if (Name == "llvm.x86.sse2.psll.dq") { + // 128-bit shift left specified in bits. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSLLDQIntrinsics(Builder, C, CI->getArgOperand(0), 1, + Shift / 8); // Shift is in bits. + } else if (Name == "llvm.x86.sse2.psrl.dq") { + // 128-bit shift right specified in bits. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSRLDQIntrinsics(Builder, C, CI->getArgOperand(0), 1, + Shift / 8); // Shift is in bits. + } else if (Name == "llvm.x86.avx2.psll.dq") { + // 256-bit shift left specified in bits. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSLLDQIntrinsics(Builder, C, CI->getArgOperand(0), 2, + Shift / 8); // Shift is in bits. + } else if (Name == "llvm.x86.avx2.psrl.dq") { + // 256-bit shift right specified in bits. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSRLDQIntrinsics(Builder, C, CI->getArgOperand(0), 2, + Shift / 8); // Shift is in bits. + } else if (Name == "llvm.x86.sse2.psll.dq.bs") { + // 128-bit shift left specified in bytes. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSLLDQIntrinsics(Builder, C, CI->getArgOperand(0), 1, + Shift); + } else if (Name == "llvm.x86.sse2.psrl.dq.bs") { + // 128-bit shift right specified in bytes. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSRLDQIntrinsics(Builder, C, CI->getArgOperand(0), 1, + Shift); + } else if (Name == "llvm.x86.avx2.psll.dq.bs") { + // 256-bit shift left specified in bytes. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSLLDQIntrinsics(Builder, C, CI->getArgOperand(0), 2, + Shift); + } else if (Name == "llvm.x86.avx2.psrl.dq.bs") { + // 256-bit shift right specified in bytes. + unsigned Shift = cast(CI->getArgOperand(1))->getZExtValue(); + Rep = UpgradeX86PSRLDQIntrinsics(Builder, C, CI->getArgOperand(0), 2, + Shift); + } else if (Name == "llvm.x86.sse41.pblendw" || + Name == "llvm.x86.sse41.blendpd" || + Name == "llvm.x86.sse41.blendps" || + Name == "llvm.x86.avx.blend.pd.256" || + Name == "llvm.x86.avx.blend.ps.256" || + Name == "llvm.x86.avx2.pblendw" || + Name == "llvm.x86.avx2.pblendd.128" || + Name == "llvm.x86.avx2.pblendd.256") { + Value *Op0 = CI->getArgOperand(0); + Value *Op1 = CI->getArgOperand(1); + unsigned Imm = cast (CI->getArgOperand(2))->getZExtValue(); + VectorType *VecTy = cast(CI->getType()); + unsigned NumElts = VecTy->getNumElements(); + + SmallVector Idxs; + for (unsigned i = 0; i != NumElts; ++i) { + unsigned Idx = ((Imm >> (i%8)) & 1) ? i + NumElts : i; + Idxs.push_back(Builder.getInt32(Idx)); + } + + Rep = Builder.CreateShuffleVector(Op0, Op1, ConstantVector::get(Idxs)); + } else if (Name == "llvm.x86.avx.vinsertf128.pd.256" || + Name == "llvm.x86.avx.vinsertf128.ps.256" || + Name == "llvm.x86.avx.vinsertf128.si.256" || + Name == "llvm.x86.avx2.vinserti128") { + Value *Op0 = CI->getArgOperand(0); + Value *Op1 = CI->getArgOperand(1); + unsigned Imm = cast(CI->getArgOperand(2))->getZExtValue(); + VectorType *VecTy = cast(CI->getType()); + unsigned NumElts = VecTy->getNumElements(); + + // Mask off the high bits of the immediate value; hardware ignores those. + Imm = Imm & 1; + + // Extend the second operand into a vector that is twice as big. + Value *UndefV = UndefValue::get(Op1->getType()); + SmallVector Idxs; + for (unsigned i = 0; i != NumElts; ++i) { + Idxs.push_back(Builder.getInt32(i)); + } + Rep = Builder.CreateShuffleVector(Op1, UndefV, ConstantVector::get(Idxs)); + + // Insert the second operand into the first operand. + + // Note that there is no guarantee that instruction lowering will actually + // produce a vinsertf128 instruction for the created shuffles. In + // particular, the 0 immediate case involves no lane changes, so it can + // be handled as a blend. + + // Example of shuffle mask for 32-bit elements: + // Imm = 1 + // Imm = 0 + + SmallVector Idxs2; + // The low half of the result is either the low half of the 1st operand + // or the low half of the 2nd operand (the inserted vector). + for (unsigned i = 0; i != NumElts / 2; ++i) { + unsigned Idx = Imm ? i : (i + NumElts); + Idxs2.push_back(Builder.getInt32(Idx)); + } + // The high half of the result is either the low half of the 2nd operand + // (the inserted vector) or the high half of the 1st operand. + for (unsigned i = NumElts / 2; i != NumElts; ++i) { + unsigned Idx = Imm ? (i + NumElts / 2) : i; + Idxs2.push_back(Builder.getInt32(Idx)); + } + Rep = Builder.CreateShuffleVector(Op0, Rep, ConstantVector::get(Idxs2)); + } else if (Name == "llvm.x86.avx.vextractf128.pd.256" || + Name == "llvm.x86.avx.vextractf128.ps.256" || + Name == "llvm.x86.avx.vextractf128.si.256" || + Name == "llvm.x86.avx2.vextracti128") { + Value *Op0 = CI->getArgOperand(0); + unsigned Imm = cast(CI->getArgOperand(1))->getZExtValue(); + VectorType *VecTy = cast(CI->getType()); + unsigned NumElts = VecTy->getNumElements(); + + // Mask off the high bits of the immediate value; hardware ignores those. + Imm = Imm & 1; + + // Get indexes for either the high half or low half of the input vector. + SmallVector Idxs(NumElts); + for (unsigned i = 0; i != NumElts; ++i) { + unsigned Idx = Imm ? (i + NumElts) : i; + Idxs[i] = Builder.getInt32(Idx); + } + + Value *UndefV = UndefValue::get(Op0->getType()); + Rep = Builder.CreateShuffleVector(Op0, UndefV, ConstantVector::get(Idxs)); } else { bool PD128 = false, PD256 = false, PS128 = false, PS256 = false; if (Name == "llvm.x86.avx.vpermil.pd.256") @@ -301,8 +619,9 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { return; } - std::string Name = CI->getName().str(); - CI->setName(Name + ".old"); + std::string Name = CI->getName(); + if (!Name.empty()) + CI->setName(Name + ".old"); switch (NewFn->getIntrinsicID()) { default: @@ -312,29 +631,27 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { case Intrinsic::cttz: assert(CI->getNumArgOperands() == 1 && "Mismatch between function args and call args"); - CI->replaceAllUsesWith(Builder.CreateCall2(NewFn, CI->getArgOperand(0), - Builder.getFalse(), Name)); + CI->replaceAllUsesWith(Builder.CreateCall( + NewFn, {CI->getArgOperand(0), Builder.getFalse()}, Name)); CI->eraseFromParent(); return; - case Intrinsic::arm_neon_vclz: { - // Change name from llvm.arm.neon.vclz.* to llvm.ctlz.* - CI->replaceAllUsesWith(Builder.CreateCall2(NewFn, CI->getArgOperand(0), - Builder.getFalse(), - "llvm.ctlz." + Name.substr(14))); + case Intrinsic::objectsize: + CI->replaceAllUsesWith(Builder.CreateCall( + NewFn, {CI->getArgOperand(0), CI->getArgOperand(1)}, Name)); CI->eraseFromParent(); return; - } + case Intrinsic::ctpop: { - CI->replaceAllUsesWith(Builder.CreateCall(NewFn, CI->getArgOperand(0))); + CI->replaceAllUsesWith(Builder.CreateCall(NewFn, {CI->getArgOperand(0)})); CI->eraseFromParent(); return; } case Intrinsic::x86_xop_vfrcz_ss: case Intrinsic::x86_xop_vfrcz_sd: - CI->replaceAllUsesWith(Builder.CreateCall(NewFn, CI->getArgOperand(1), - Name)); + CI->replaceAllUsesWith( + Builder.CreateCall(NewFn, {CI->getArgOperand(1)}, Name)); CI->eraseFromParent(); return; @@ -352,16 +669,32 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { // Old intrinsic, add bitcasts Value *Arg1 = CI->getArgOperand(1); - Value *BC0 = - Builder.CreateBitCast(Arg0, - VectorType::get(Type::getInt64Ty(C), 2), - "cast"); - Value *BC1 = - Builder.CreateBitCast(Arg1, - VectorType::get(Type::getInt64Ty(C), 2), - "cast"); + Type *NewVecTy = VectorType::get(Type::getInt64Ty(C), 2); - CallInst* NewCall = Builder.CreateCall2(NewFn, BC0, BC1, Name); + Value *BC0 = Builder.CreateBitCast(Arg0, NewVecTy, "cast"); + Value *BC1 = Builder.CreateBitCast(Arg1, NewVecTy, "cast"); + + CallInst *NewCall = Builder.CreateCall(NewFn, {BC0, BC1}, Name); + CI->replaceAllUsesWith(NewCall); + CI->eraseFromParent(); + return; + } + + case Intrinsic::x86_sse41_insertps: + case Intrinsic::x86_sse41_dppd: + case Intrinsic::x86_sse41_dpps: + case Intrinsic::x86_sse41_mpsadbw: + case Intrinsic::x86_avx_dp_ps_256: + case Intrinsic::x86_avx2_mpsadbw: { + // Need to truncate the last argument from i32 to i8 -- this argument models + // an inherently 8-bit immediate operand to these x86 instructions. + SmallVector Args(CI->arg_operands().begin(), + CI->arg_operands().end()); + + // Replace the last argument with a trunc. + Args.back() = Builder.CreateTrunc(Args.back(), Type::getInt8Ty(C), "trunc"); + + CallInst *NewCall = Builder.CreateCall(NewFn, Args); CI->replaceAllUsesWith(NewCall); CI->eraseFromParent(); return; @@ -380,7 +713,7 @@ void llvm::UpgradeCallsToIntrinsic(Function* F) { if (UpgradeIntrinsicFunction(F, NewFn)) { if (NewFn != F) { // Replace all uses to the old function with the new one if necessary. - for (Value::use_iterator UI = F->use_begin(), UE = F->use_end(); + for (Value::user_iterator UI = F->user_begin(), UE = F->user_end(); UI != UE; ) { if (CallInst *CI = dyn_cast(*UI++)) UpgradeIntrinsicCall(CI, NewFn); @@ -391,3 +724,92 @@ void llvm::UpgradeCallsToIntrinsic(Function* F) { } } +void llvm::UpgradeInstWithTBAATag(Instruction *I) { + MDNode *MD = I->getMetadata(LLVMContext::MD_tbaa); + assert(MD && "UpgradeInstWithTBAATag should have a TBAA tag"); + // Check if the tag uses struct-path aware TBAA format. + if (isa(MD->getOperand(0)) && MD->getNumOperands() >= 3) + return; + + if (MD->getNumOperands() == 3) { + Metadata *Elts[] = {MD->getOperand(0), MD->getOperand(1)}; + MDNode *ScalarType = MDNode::get(I->getContext(), Elts); + // Create a MDNode + Metadata *Elts2[] = {ScalarType, ScalarType, + ConstantAsMetadata::get(Constant::getNullValue( + Type::getInt64Ty(I->getContext()))), + MD->getOperand(2)}; + I->setMetadata(LLVMContext::MD_tbaa, MDNode::get(I->getContext(), Elts2)); + } else { + // Create a MDNode + Metadata *Elts[] = {MD, MD, ConstantAsMetadata::get(Constant::getNullValue( + Type::getInt64Ty(I->getContext())))}; + I->setMetadata(LLVMContext::MD_tbaa, MDNode::get(I->getContext(), Elts)); + } +} + +Instruction *llvm::UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy, + Instruction *&Temp) { + if (Opc != Instruction::BitCast) + return nullptr; + + Temp = nullptr; + Type *SrcTy = V->getType(); + if (SrcTy->isPtrOrPtrVectorTy() && DestTy->isPtrOrPtrVectorTy() && + SrcTy->getPointerAddressSpace() != DestTy->getPointerAddressSpace()) { + LLVMContext &Context = V->getContext(); + + // We have no information about target data layout, so we assume that + // the maximum pointer size is 64bit. + Type *MidTy = Type::getInt64Ty(Context); + Temp = CastInst::Create(Instruction::PtrToInt, V, MidTy); + + return CastInst::Create(Instruction::IntToPtr, Temp, DestTy); + } + + return nullptr; +} + +Value *llvm::UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy) { + if (Opc != Instruction::BitCast) + return nullptr; + + Type *SrcTy = C->getType(); + if (SrcTy->isPtrOrPtrVectorTy() && DestTy->isPtrOrPtrVectorTy() && + SrcTy->getPointerAddressSpace() != DestTy->getPointerAddressSpace()) { + LLVMContext &Context = C->getContext(); + + // We have no information about target data layout, so we assume that + // the maximum pointer size is 64bit. + Type *MidTy = Type::getInt64Ty(Context); + + return ConstantExpr::getIntToPtr(ConstantExpr::getPtrToInt(C, MidTy), + DestTy); + } + + return nullptr; +} + +/// Check the debug info version number, if it is out-dated, drop the debug +/// info. Return true if module is modified. +bool llvm::UpgradeDebugInfo(Module &M) { + unsigned Version = getDebugMetadataVersionFromModule(M); + if (Version == DEBUG_METADATA_VERSION) + return false; + + bool RetCode = StripDebugInfo(M); + if (RetCode) { + DiagnosticInfoDebugMetadataVersion DiagVersion(M, Version); + M.getContext().diagnose(DiagVersion); + } + return RetCode; +} + +void llvm::UpgradeMDStringConstant(std::string &String) { + const std::string OldPrefix = "llvm.vectorizer."; + if (String == "llvm.vectorizer.unroll") { + String = "llvm.loop.interleave.count"; + } else if (String.find(OldPrefix) == 0) { + String.replace(0, OldPrefix.size(), "llvm.loop.vectorize."); + } +}