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Implement GNU asm-label extension support in CodeGen. This fixes

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scimark2 on Darwin.

 - Added Sema support for asm-label on variables, which I forgot before.

 - Update CodeGen to use GlobalDeclMap to determine if static Decls
   require emission (instead of LLVM module name lookup). Important
   since the Decl name and the LLVM module name can differ.

 - <rdar://problem/6116729>

llvm-svn: 54388
This commit is contained in:
Daniel Dunbar
2008-08-06 00:03:29 +00:00
parent 9b26ca1ab4
commit ffc29be83f
3 changed files with 47 additions and 7 deletions
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21
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -184,6 +184,12 @@ void CodeGenModule::SetGlobalValueAttributes(const FunctionDecl *FD,
if (const VisibilityAttr *attr = FD->getAttr<VisibilityAttr>())
CodeGenModule::setVisibility(GV, attr->getVisibility());
// FIXME: else handle -fvisibility
if (const AsmLabelAttr *ALA = FD->getAttr<AsmLabelAttr>()) {
// Prefaced with special LLVM marker to indicate that the name
// should not be munged.
GV->setName("\01" + ALA->getLabel());
}
}
void CodeGenModule::SetFunctionAttributes(const FunctionDecl *FD,
@@ -400,13 +406,8 @@ void CodeGenModule::EmitStatics() {
// Check if we have used a decl with the same name
// FIXME: The AST should have some sort of aggregate decls or
// global symbol map.
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
if (!getModule().getFunction(FD->getName()))
continue;
} else {
if (!getModule().getNamedGlobal(cast<VarDecl>(D)->getName()))
continue;
}
if (!GlobalDeclMap.count(D->getName()))
continue;
// Emit the definition.
EmitGlobalDefinition(D);
@@ -620,6 +621,12 @@ void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) {
if (const VisibilityAttr *attr = D->getAttr<VisibilityAttr>())
setVisibility(GV, attr->getVisibility());
// FIXME: else handle -fvisibility
if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) {
// Prefaced with special LLVM marker to indicate that the name
// should not be munged.
GV->setName("\01" + ALA->getLabel());
}
// Set the llvm linkage type as appropriate.
if (D->getStorageClass() == VarDecl::Static)