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Now Attributes are divided in three groups 

- return attributes - inreg, zext and sext
- parameter attributes
- function attributes - nounwind, readonly, readnone, noreturn

Return attributes use 0 as the index.
Function attributes use ~0U as the index.

llvm-svn: 56705
This commit is contained in:
Devang Patel 2008-09-26 22:53:57 +00:00
parent a05633e105
commit 597e70876e
2 changed files with 9 additions and 5 deletions
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12
clang/lib/CodeGen/CGCall.cpp
View File

@ -513,6 +513,7 @@ void CodeGenModule::ConstructAttributeList(const Decl *TargetDecl,
ArgTypeIterator end,
AttributeListType &PAL) {
unsigned FuncAttrs = 0;
unsigned RetAttrs = 0;
if (TargetDecl) {
if (TargetDecl->getAttr<NoThrowAttr>())
@ -528,9 +529,9 @@ void CodeGenModule::ConstructAttributeList(const Decl *TargetDecl,
case ABIArgInfo::Default:
if (RetTy->isPromotableIntegerType()) {
if (RetTy->isSignedIntegerType()) {
FuncAttrs |= llvm::Attribute::SExt;
RetAttrs |= llvm::Attribute::SExt;
} else if (RetTy->isUnsignedIntegerType()) {
FuncAttrs |= llvm::Attribute::ZExt;
RetAttrs |= llvm::Attribute::ZExt;
}
}
break;
@ -550,8 +551,8 @@ void CodeGenModule::ConstructAttributeList(const Decl *TargetDecl,
assert(0 && "Invalid ABI kind for return argument");
}
if (FuncAttrs)
PAL.push_back(llvm::AttributeWithIndex::get(0, FuncAttrs));
if (RetAttrs)
PAL.push_back(llvm::AttributeWithIndex::get(0, RetAttrs));
for (++begin; begin != end; ++begin) {
QualType ParamType = *begin;
unsigned Attributes = 0;
@ -592,6 +593,9 @@ void CodeGenModule::ConstructAttributeList(const Decl *TargetDecl,
PAL.push_back(llvm::AttributeWithIndex::get(Index, Attributes));
++Index;
}
if (FuncAttrs)
PAL.push_back(llvm::AttributeWithIndex::get(~0, FuncAttrs));
}
void CodeGenFunction::EmitFunctionProlog(llvm::Function *Fn,

2
clang/lib/CodeGen/CodeGenModule.cpp
View File

@ -240,7 +240,7 @@ void CodeGenModule::SetFunctionAttributesForDefinition(const Decl *D,
}
if (!Features.Exceptions)
F->addAttribute(0, llvm::Attribute::NoUnwind);
F->addAttribute(~0, llvm::Attribute::NoUnwind);
}
void CodeGenModule::SetMethodAttributes(const ObjCMethodDecl *MD,