diff options
author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2013-11-15 01:34:59 +0000 |
---|---|---|
committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2013-11-15 01:34:59 +0000 |
commit | 59d3ae6cdc4316ad338cd848251f33a236ccb36c (patch) | |
tree | aec8d2396d4a436295845b109fb15b73279a2186 /lib/IR/AutoUpgrade.cpp | |
parent | 2b7fef0ad4bfaaf9fd41cda5abda35aab701b598 (diff) | |
download | llvm-59d3ae6cdc4316ad338cd848251f33a236ccb36c.tar.gz llvm-59d3ae6cdc4316ad338cd848251f33a236ccb36c.tar.bz2 llvm-59d3ae6cdc4316ad338cd848251f33a236ccb36c.tar.xz |
Add addrspacecast instruction.
Patch by Michele Scandale!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194760 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/IR/AutoUpgrade.cpp')
-rw-r--r-- | lib/IR/AutoUpgrade.cpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/IR/AutoUpgrade.cpp b/lib/IR/AutoUpgrade.cpp index 52434d0196..6f79919f24 100644 --- a/lib/IR/AutoUpgrade.cpp +++ b/lib/IR/AutoUpgrade.cpp @@ -447,3 +447,45 @@ void llvm::UpgradeInstWithTBAATag(Instruction *I) { 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 0; + + Temp = 0; + 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 0; +} + +Value *llvm::UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy) { + if (Opc != Instruction::BitCast) + return 0; + + 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 0; +} |