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pull linkage emission code out to a new EmitLinkage function.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94621 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-01-26 23:47:12 +00:00
parent b406a8141d
commit a3e8883d71
2 changed files with 48 additions and 43 deletions
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2
include/llvm/CodeGen/AsmPrinter.h
View File

@ -360,6 +360,8 @@ namespace llvm {
void printOffset(int64_t Offset) const;
private:
void EmitLinkage(unsigned Linkage, MCSymbol *GVSym);
void EmitJumpTableEntry(const MachineJumpTableInfo *MJTI,
const MachineBasicBlock *MBB,
unsigned uid) const;

89
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
View File

@ -150,6 +150,50 @@ bool AsmPrinter::doInitialization(Module &M) {
return false;
}
void AsmPrinter::EmitLinkage(unsigned Linkage, MCSymbol *GVSym) {
switch ((GlobalValue::LinkageTypes)Linkage) {
case GlobalValue::CommonLinkage:
case GlobalValue::LinkOnceAnyLinkage:
case GlobalValue::LinkOnceODRLinkage:
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
case GlobalValue::LinkerPrivateLinkage:
if (MAI->getWeakDefDirective() != 0) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
// .weak_definition _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefinition);
} else if (const char *LinkOnce = MAI->getLinkOnceDirective()) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
// FIXME: linkonce should be a section attribute, handled by COFF Section
// assignment.
// http://sourceware.org/binutils/docs-2.20/as/Linkonce.html#Linkonce
// .linkonce same_size
O << LinkOnce;
} else {
// .weak _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Weak);
}
break;
case GlobalValue::DLLExportLinkage:
case GlobalValue::AppendingLinkage:
// FIXME: appending linkage variables should go into a section of
// their name or something. For now, just emit them as external.
case GlobalValue::ExternalLinkage:
// If external or appending, declare as a global symbol.
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
break;
case GlobalValue::PrivateLinkage:
case GlobalValue::InternalLinkage:
break;
default:
llvm_unreachable("Unknown linkage type!");
}
}
/// EmitGlobalVariable - Emit the specified global variable to the .s file.
void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
if (!GV->hasInitializer()) // External globals require no code.
@ -225,50 +269,9 @@ void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
OutStreamer.SwitchSection(TheSection);
// TODO: Factor into an 'emit linkage' thing that is shared with function
// bodies.
switch (GV->getLinkage()) {
case GlobalValue::CommonLinkage:
case GlobalValue::LinkOnceAnyLinkage:
case GlobalValue::LinkOnceODRLinkage:
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
case GlobalValue::LinkerPrivateLinkage:
if (MAI->getWeakDefDirective() != 0) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
// .weak_definition _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefinition);
} else if (const char *LinkOnce = MAI->getLinkOnceDirective()) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
// FIXME: linkonce should be a section attribute, handled by COFF Section
// assignment.
// http://sourceware.org/binutils/docs-2.20/as/Linkonce.html#Linkonce
// .linkonce same_size
O << LinkOnce;
} else {
// .weak _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Weak);
}
break;
case GlobalValue::DLLExportLinkage:
case GlobalValue::AppendingLinkage:
// FIXME: appending linkage variables should go into a section of
// their name or something. For now, just emit them as external.
case GlobalValue::ExternalLinkage:
// If external or appending, declare as a global symbol.
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
break;
case GlobalValue::PrivateLinkage:
case GlobalValue::InternalLinkage:
break;
default:
llvm_unreachable("Unknown linkage type!");
}
EmitLinkage(GV->getLinkage(), GVSym);
EmitAlignment(AlignLog, GV);
if (VerboseAsm) {
WriteAsOperand(OutStreamer.GetCommentOS(), GV,
/*PrintType=*/false, GV->getParent());