diff options
Diffstat (limited to 'lib/VMCore')
| -rw-r--r-- | lib/VMCore/AutoUpgrade.cpp | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/lib/VMCore/AutoUpgrade.cpp b/lib/VMCore/AutoUpgrade.cpp index 9e551bb..4541f38 100644 --- a/lib/VMCore/AutoUpgrade.cpp +++ b/lib/VMCore/AutoUpgrade.cpp @@ -527,6 +527,12 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) { // or 0. NewFn = 0; return true; + } else if (Name.compare(5, 16, "x86.sse.loadu.ps", 16) == 0 || + Name.compare(5, 17, "x86.sse2.loadu.dq", 17) == 0 || + Name.compare(5, 17, "x86.sse2.loadu.pd", 17) == 0) { + // Calls to these instructions are transformed into unaligned loads. + NewFn = 0; + return true; } else if (Name.compare(5, 17, "x86.ssse3.pshuf.w", 17) == 0) { // This is an SSE/MMX instruction. const Type *X86_MMXTy = VectorType::getX86_MMXTy(FTy->getContext()); @@ -946,7 +952,29 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { // Remove upgraded instruction. CI->eraseFromParent(); - + + } else if (F->getName() == "llvm.x86.sse.loadu.ps" || + F->getName() == "llvm.x86.sse2.loadu.dq" || + F->getName() == "llvm.x86.sse2.loadu.pd") { + // Convert to a native, unaligned load. + const Type *VecTy = CI->getType(); + const Type *IntTy = IntegerType::get(C, 128); + IRBuilder<> Builder(C); + Builder.SetInsertPoint(CI->getParent(), CI); + + Value *BC = Builder.CreateBitCast(CI->getArgOperand(0), + PointerType::getUnqual(IntTy), + "cast"); + LoadInst *LI = Builder.CreateLoad(BC, CI->getName()); + LI->setAlignment(1); // Unaligned load. + BC = Builder.CreateBitCast(LI, VecTy, "new.cast"); + + // Fix up all the uses with our new load. + if (!CI->use_empty()) + CI->replaceAllUsesWith(BC); + + // Remove intrinsic. + CI->eraseFromParent(); } else { llvm_unreachable("Unknown function for CallInst upgrade."); } |