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IRgen: Add CreateIRTemp, which creates a temporary alloca but with type converted "not-for-memory". Dunno a better name. 

llvm-svn: 96374
This commit is contained in:
Daniel Dunbar 2010-02-16 19:44:13 +00:00
parent 27bacafb71
commit d004918ccb
2 changed files with 18 additions and 1 deletions
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12
clang/lib/CodeGen/CGExpr.cpp
View File

@ -36,7 +36,17 @@ llvm::AllocaInst *CodeGenFunction::CreateTempAlloca(const llvm::Type *Ty,
return new llvm::AllocaInst(Ty, 0, Name, AllocaInsertPt);
}
llvm::Value *CodeGenFunction::CreateMemTemp(QualType Ty, const llvm::Twine &Name) {
llvm::Value *CodeGenFunction::CreateIRTemp(QualType Ty,
const llvm::Twine &Name) {
llvm::AllocaInst *Alloc = CreateTempAlloca(ConvertType(Ty), Name);
// FIXME: Should we prefer the preferred type alignment here?
CharUnits Align = getContext().getTypeAlignInChars(Ty);
Alloc->setAlignment(Align.getQuantity());
return Alloc;
}
llvm::Value *CodeGenFunction::CreateMemTemp(QualType Ty,
const llvm::Twine &Name) {
llvm::AllocaInst *Alloc = CreateTempAlloca(ConvertTypeForMem(Ty), Name);
// FIXME: Should we prefer the preferred type alignment here?
CharUnits Align = getContext().getTypeAlignInChars(Ty);

7
clang/lib/CodeGen/CodeGenFunction.h
View File

@ -663,6 +663,13 @@ public:
llvm::AllocaInst *CreateTempAlloca(const llvm::Type *Ty,
const llvm::Twine &Name = "tmp");
/// CreateIRTemp - Create a temporary IR object of the given type, with
/// appropriate alignment. This routine should only be used when an temporary
/// value needs to be stored into an alloca (for example, to avoid explicit
/// PHI construction), but the type is the IR type, not the type appropriate
/// for storing in memory.
llvm::Value *CreateIRTemp(QualType T, const llvm::Twine &Name = "tmp");
/// CreateMemTemp - Create a temporary memory object of the given type, with
/// appropriate alignment.
llvm::Value *CreateMemTemp(QualType T, const llvm::Twine &Name = "tmp");