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Add addrspacecast instruction.

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Patch by Michele Scandale!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194760 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault
2013-11-15 01:34:59 +00:00
parent 2b7fef0ad4
commit 59d3ae6cdc
51 changed files with 589 additions and 230 deletions
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42
lib/IR/AutoUpgrade.cpp
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@ -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;
}