| //===-- AutoUpgrade.cpp - Implement auto-upgrade helper functions ---------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // 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/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/ErrorHandling.h" |
| #include <cstring> |
| using namespace llvm; |
| |
| // Upgrade the declarations of the SSE4.1 functions whose arguments have |
| // changed their type from v4f32 to v2i64. |
| static bool UpgradeSSE41Function(Function* F, Intrinsic::ID IID, |
| Function *&NewFn) { |
| // Check whether this is an old version of the function, which received |
| // v4f32 arguments. |
| Type *Arg0Type = F->getFunctionType()->getParamType(0); |
| if (Arg0Type != VectorType::get(Type::getFloatTy(F->getContext()), 4)) |
| return false; |
| |
| // Yes, it's old, replace it with new version. |
| F->setName(F->getName() + ".old"); |
| NewFn = Intrinsic::getDeclaration(F->getParent(), 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; |
| } |
| |
| // Upgrade the declarations of AVX-512 cmp intrinsic functions whose 8-bit |
| // immediates have changed their type from i32 to i8. |
| static bool UpgradeAVX512CmpIntrinsic(Function *F, Intrinsic::ID IID, |
| Function *&NewFn) { |
| // Check that the last argument is an i32. |
| Type *LastArgType = F->getFunctionType()->getParamType(2); |
| 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."); |
| |
| // Quickly eliminate it, if it's not a candidate. |
| StringRef Name = F->getName(); |
| if (Name.size() <= 8 || !Name.startswith("llvm.")) |
| return false; |
| Name = Name.substr(5); // Strip off "llvm." |
| |
| switch (Name[0]) { |
| default: break; |
| case 'a': { |
| if (Name.startswith("arm.neon.vclz")) { |
| Type* args[2] = { |
| F->arg_begin()->getType(), |
| Type::getInt1Ty(F->getContext()) |
| }; |
| // Can't use Intrinsic::getDeclaration here as it adds a ".i1" to |
| // the end of the name. Change name from llvm.arm.neon.vclz.* to |
| // llvm.ctlz.* |
| FunctionType* fType = FunctionType::get(F->getReturnType(), args, false); |
| NewFn = Function::Create(fType, F->getLinkage(), |
| "llvm.ctlz." + Name.substr(14), F->getParent()); |
| return true; |
| } |
| if (Name.startswith("arm.neon.vcnt")) { |
| NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::ctpop, |
| F->arg_begin()->getType()); |
| return true; |
| } |
| break; |
| } |
| case 'c': { |
| if (Name.startswith("ctlz.") && F->arg_size() == 1) { |
| F->setName(Name + ".old"); |
| NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::ctlz, |
| F->arg_begin()->getType()); |
| return true; |
| } |
| if (Name.startswith("cttz.") && F->arg_size() == 1) { |
| F->setName(Name + ".old"); |
| NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::cttz, |
| F->arg_begin()->getType()); |
| return true; |
| } |
| 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 = nullptr; |
| return true; |
| } |
| // SSE4.1 ptest functions may have an old signature. |
| if (Name.startswith("x86.sse41.ptest")) { |
| if (Name == "x86.sse41.ptestc") |
| return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestc, NewFn); |
| if (Name == "x86.sse41.ptestz") |
| return UpgradeSSE41Function(F, Intrinsic::x86_sse41_ptestz, 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); |
| |
| if (Name == "x86.avx512.mask.cmp.ps.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_ps_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.pd.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_pd_512, |
| NewFn); |
| |
| if (Name == "x86.avx512.mask.cmp.b.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_b_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.w.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_w_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.d.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_d_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.q.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_q_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.b.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_b_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.w.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_w_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.d.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_d_512, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.q.512") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_q_512, |
| NewFn); |
| |
| if (Name == "x86.avx512.mask.cmp.b.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_b_256, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.w.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_w_256, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.d.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_d_256, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.q.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_q_256, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.b.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_b_256, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.w.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_w_256, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.d.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_d_256, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.q.256") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_q_256, |
| NewFn); |
| |
| if (Name == "x86.avx512.mask.cmp.b.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_b_128, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.w.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_w_128, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.d.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_d_128, |
| NewFn); |
| if (Name == "x86.avx512.mask.cmp.q.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_cmp_q_128, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.b.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_b_128, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.w.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_w_128, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.d.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_d_128, |
| NewFn); |
| if (Name == "x86.avx512.mask.ucmp.q.128") |
| return UpgradeAVX512CmpIntrinsic(F, Intrinsic::x86_avx512_mask_ucmp_q_128, |
| 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"); |
| NewFn = Intrinsic::getDeclaration(F->getParent(), |
| Intrinsic::x86_xop_vfrcz_ss); |
| return true; |
| } |
| if (Name.startswith("x86.xop.vfrcz.sd") && F->arg_size() == 2) { |
| F->setName(Name + ".old"); |
| NewFn = Intrinsic::getDeclaration(F->getParent(), |
| Intrinsic::x86_xop_vfrcz_sd); |
| return true; |
| } |
| // Fix the FMA4 intrinsics to remove the 4 |
| if (Name.startswith("x86.fma4.")) { |
| F->setName("llvm.x86.fma" + Name.substr(8)); |
| NewFn = F; |
| return true; |
| } |
| break; |
| } |
| } |
| |
| // This may not belong here. This function is effectively being overloaded |
| // to both detect an intrinsic which needs upgrading, and to provide the |
| // upgraded form of the intrinsic. We should perhaps have two separate |
| // functions for this. |
| return false; |
| } |
| |
| bool llvm::UpgradeIntrinsicFunction(Function *F, Function *&NewFn) { |
| NewFn = nullptr; |
| bool Upgraded = UpgradeIntrinsicFunction1(F, NewFn); |
| |
| // Upgrade intrinsic attributes. This does not change the function. |
| if (NewFn) |
| F = NewFn; |
| if (unsigned id = F->getIntrinsicID()) |
| F->setAttributes(Intrinsic::getAttributes(F->getContext(), |
| (Intrinsic::ID)id)); |
| return Upgraded; |
| } |
| |
| bool llvm::UpgradeGlobalVariable(GlobalVariable *GV) { |
| // Nothing to do yet. |
| 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<Constant*, 32> 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<Constant*, 32> 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. |
| void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { |
| Function *F = CI->getCalledFunction(); |
| LLVMContext &C = CI->getContext(); |
| IRBuilder<> Builder(C); |
| Builder.SetInsertPoint(CI->getParent(), CI); |
| |
| assert(F && "Intrinsic call is not direct?"); |
| |
| if (!NewFn) { |
| // Get the Function's name. |
| StringRef Name = F->getName(); |
| |
| Value *Rep; |
| // Upgrade packed integer vector compares intrinsics to compare instructions |
| if (Name.startswith("llvm.x86.sse2.pcmpeq.") || |
| Name.startswith("llvm.x86.avx2.pcmpeq.")) { |
| Rep = Builder.CreateICmpEQ(CI->getArgOperand(0), CI->getArgOperand(1), |
| "pcmpeq"); |
| // need to sign extend since icmp returns vector of i1 |
| Rep = Builder.CreateSExt(Rep, CI->getType(), ""); |
| } else if (Name.startswith("llvm.x86.sse2.pcmpgt.") || |
| Name.startswith("llvm.x86.avx2.pcmpgt.")) { |
| Rep = Builder.CreateICmpSGT(CI->getArgOperand(0), CI->getArgOperand(1), |
| "pcmpgt"); |
| // need to sign extend since icmp returns vector of i1 |
| Rep = Builder.CreateSExt(Rep, CI->getType(), ""); |
| } else if (Name == "llvm.x86.avx.movnt.dq.256" || |
| Name == "llvm.x86.avx.movnt.ps.256" || |
| Name == "llvm.x86.avx.movnt.pd.256") { |
| IRBuilder<> Builder(C); |
| Builder.SetInsertPoint(CI->getParent(), CI); |
| |
| Module *M = F->getParent(); |
| SmallVector<Metadata *, 1> Elts; |
| Elts.push_back( |
| ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(C), 1))); |
| MDNode *Node = MDNode::get(C, Elts); |
| |
| Value *Arg0 = CI->getArgOperand(0); |
| Value *Arg1 = CI->getArgOperand(1); |
| |
| // Convert the type of the pointer to a pointer to the stored type. |
| Value *BC = Builder.CreateBitCast(Arg0, |
| PointerType::getUnqual(Arg1->getType()), |
| "cast"); |
| StoreInst *SI = Builder.CreateStore(Arg1, BC); |
| SI->setMetadata(M->getMDKindID("nontemporal"), Node); |
| SI->setAlignment(16); |
| |
| // Remove intrinsic. |
| CI->eraseFromParent(); |
| return; |
| } else if (Name.startswith("llvm.x86.xop.vpcom")) { |
| Intrinsic::ID intID; |
| if (Name.endswith("ub")) |
| intID = Intrinsic::x86_xop_vpcomub; |
| else if (Name.endswith("uw")) |
| intID = Intrinsic::x86_xop_vpcomuw; |
| else if (Name.endswith("ud")) |
| intID = Intrinsic::x86_xop_vpcomud; |
| else if (Name.endswith("uq")) |
| intID = Intrinsic::x86_xop_vpcomuq; |
| else if (Name.endswith("b")) |
| intID = Intrinsic::x86_xop_vpcomb; |
| else if (Name.endswith("w")) |
| intID = Intrinsic::x86_xop_vpcomw; |
| else if (Name.endswith("d")) |
| intID = Intrinsic::x86_xop_vpcomd; |
| else if (Name.endswith("q")) |
| intID = Intrinsic::x86_xop_vpcomq; |
| else |
| llvm_unreachable("Unknown suffix"); |
| |
| Name = Name.substr(18); // strip off "llvm.x86.xop.vpcom" |
| unsigned Imm; |
| if (Name.startswith("lt")) |
| Imm = 0; |
| else if (Name.startswith("le")) |
| Imm = 1; |
| else if (Name.startswith("gt")) |
| Imm = 2; |
| else if (Name.startswith("ge")) |
| Imm = 3; |
| else if (Name.startswith("eq")) |
| Imm = 4; |
| else if (Name.startswith("ne")) |
| Imm = 5; |
| 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)); |
| } 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.CreateCall2(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<ConstantInt>(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<ConstantInt>(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<ConstantInt>(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<ConstantInt>(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<ConstantInt>(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<ConstantInt>(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<ConstantInt>(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<ConstantInt>(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 <ConstantInt>(CI->getArgOperand(2))->getZExtValue(); |
| VectorType *VecTy = cast<VectorType>(CI->getType()); |
| unsigned NumElts = VecTy->getNumElements(); |
| |
| SmallVector<Constant*, 16> 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<ConstantInt>(CI->getArgOperand(2))->getZExtValue(); |
| VectorType *VecTy = cast<VectorType>(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<Constant*, 8> 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 <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 10, i32 11> |
| // Imm = 0 <i32 8, i32 9, i32 10, i32 11, i32 4, i32 5, i32 6, i32 7 > |
| |
| SmallVector<Constant*, 8> 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<ConstantInt>(CI->getArgOperand(1))->getZExtValue(); |
| VectorType *VecTy = cast<VectorType>(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<Constant*, 4> 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") |
| PD256 = true; |
| else if (Name == "llvm.x86.avx.vpermil.pd") |
| PD128 = true; |
| else if (Name == "llvm.x86.avx.vpermil.ps.256") |
| PS256 = true; |
| else if (Name == "llvm.x86.avx.vpermil.ps") |
| PS128 = true; |
| |
| if (PD256 || PD128 || PS256 || PS128) { |
| Value *Op0 = CI->getArgOperand(0); |
| unsigned Imm = cast<ConstantInt>(CI->getArgOperand(1))->getZExtValue(); |
| SmallVector<Constant*, 8> Idxs; |
| |
| if (PD128) |
| for (unsigned i = 0; i != 2; ++i) |
| Idxs.push_back(Builder.getInt32((Imm >> i) & 0x1)); |
| else if (PD256) |
| for (unsigned l = 0; l != 4; l+=2) |
| for (unsigned i = 0; i != 2; ++i) |
| Idxs.push_back(Builder.getInt32(((Imm >> (l+i)) & 0x1) + l)); |
| else if (PS128) |
| for (unsigned i = 0; i != 4; ++i) |
| Idxs.push_back(Builder.getInt32((Imm >> (2 * i)) & 0x3)); |
| else if (PS256) |
| for (unsigned l = 0; l != 8; l+=4) |
| for (unsigned i = 0; i != 4; ++i) |
| Idxs.push_back(Builder.getInt32(((Imm >> (2 * i)) & 0x3) + l)); |
| else |
| llvm_unreachable("Unexpected function"); |
| |
| Rep = Builder.CreateShuffleVector(Op0, Op0, ConstantVector::get(Idxs)); |
| } else { |
| llvm_unreachable("Unknown function for CallInst upgrade."); |
| } |
| } |
| |
| CI->replaceAllUsesWith(Rep); |
| CI->eraseFromParent(); |
| return; |
| } |
| |
| std::string Name = CI->getName(); |
| if (!Name.empty()) |
| CI->setName(Name + ".old"); |
| |
| switch (NewFn->getIntrinsicID()) { |
| default: |
| llvm_unreachable("Unknown function for CallInst upgrade."); |
| |
| case Intrinsic::ctlz: |
| 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->eraseFromParent(); |
| return; |
| |
| case Intrinsic::objectsize: |
| CI->replaceAllUsesWith(Builder.CreateCall2(NewFn, |
| CI->getArgOperand(0), |
| CI->getArgOperand(1), |
| Name)); |
| CI->eraseFromParent(); |
| return; |
| |
| case Intrinsic::ctpop: { |
| 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->eraseFromParent(); |
| return; |
| |
| case Intrinsic::x86_sse41_ptestc: |
| case Intrinsic::x86_sse41_ptestz: |
| case Intrinsic::x86_sse41_ptestnzc: { |
| // The arguments for these intrinsics used to be v4f32, and changed |
| // to v2i64. This is purely a nop, since those are bitwise intrinsics. |
| // So, the only thing required is a bitcast for both arguments. |
| // First, check the arguments have the old type. |
| Value *Arg0 = CI->getArgOperand(0); |
| if (Arg0->getType() != VectorType::get(Type::getFloatTy(C), 4)) |
| return; |
| |
| // 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"); |
| |
| CallInst* NewCall = Builder.CreateCall2(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<Value *, 4> 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; |
| } |
| case Intrinsic::x86_avx512_mask_cmp_ps_512: |
| case Intrinsic::x86_avx512_mask_cmp_pd_512: { |
| // Need to truncate the last argument from i32 to i8 -- this argument models |
| // an inherently 8-bit immediate operand to these x86 instructions. |
| SmallVector<Value *, 5> Args(CI->arg_operands().begin(), |
| CI->arg_operands().end()); |
| |
| // Replace the last argument with a trunc. |
| Args[2] = Builder.CreateTrunc(Args[2], Type::getInt8Ty(C), "trunc"); |
| |
| CallInst *NewCall = Builder.CreateCall(NewFn, Args); |
| CI->replaceAllUsesWith(NewCall); |
| CI->eraseFromParent(); |
| return; |
| } |
| } |
| } |
| |
| // This tests each Function to determine if it needs upgrading. When we find |
| // one we are interested in, we then upgrade all calls to reflect the new |
| // function. |
| void llvm::UpgradeCallsToIntrinsic(Function* F) { |
| assert(F && "Illegal attempt to upgrade a non-existent intrinsic."); |
| |
| // Upgrade the function and check if it is a totaly new function. |
| Function *NewFn; |
| if (UpgradeIntrinsicFunction(F, NewFn)) { |
| if (NewFn != F) { |
| // Replace all uses to the old function with the new one if necessary. |
| for (Value::user_iterator UI = F->user_begin(), UE = F->user_end(); |
| UI != UE; ) { |
| if (CallInst *CI = dyn_cast<CallInst>(*UI++)) |
| UpgradeIntrinsicCall(CI, NewFn); |
| } |
| // Remove old function, no longer used, from the module. |
| F->eraseFromParent(); |
| } |
| } |
| } |
| |
| 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<MDNode>(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 <ScalarType, ScalarType, offset 0, const> |
| 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 <MD, MD, offset 0> |
| 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."); |
| } |
| } |
