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Provide general hook for section name calculation

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llvm-svn: 53304
This commit is contained in:
Anton Korobeynikov 2008-07-09 13:22:46 +00:00
parent c421fcddb4
commit f42d75201a
3 changed files with 44 additions and 10 deletions
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3
include/llvm/Target/TargetAsmInfo.h
View File

@ -481,11 +481,14 @@ namespace llvm {
/// global with all necessary flags and marks.
virtual std::string SectionForGlobal(const GlobalValue *GV) const;
// Helper methods for SectionForGlobal
virtual std::string UniqueSectionForGlobal(const GlobalValue* GV,
SectionKind::Kind kind) const;
virtual std::string PrintSectionFlags(unsigned flags) const { return ""; }
virtual std::string SelectSectionForGlobal(const GlobalValue *GV) const;
// Accessors.
//
const char *getTextSection() const {

39
lib/Target/TargetAsmInfo.cpp
View File

@ -257,12 +257,43 @@ TargetAsmInfo::SectionFlagsForGlobal(const GlobalValue *GV,
std::string
TargetAsmInfo::SectionForGlobal(const GlobalValue *GV) const {
unsigned flags = SectionFlagsForGlobal(GV, GV->getSection().c_str());
std::string Name;
// Select section name
if (GV->hasSection()) {
// Honour section already set, if any
Name = GV->getSection();
} else {
// Use default section depending on the 'type' of global
Name = SelectSectionForGlobal(GV);
}
Name += PrintSectionFlags(flags);
return Name;
}
// Lame default implementation. Calculate the section name for global.
std::string
TargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV) const {
SectionKind::Kind kind = SectionKindForGlobal(GV);
if (kind == SectionKind::Text)
return getTextSection();
else if (kind == SectionKind::BSS && getBSSSection())
return getBSSSection();
if (GV->hasLinkOnceLinkage() ||
GV->hasWeakLinkage() ||
GV->hasCommonLinkage())
return UniqueSectionForGlobal(GV, kind);
else {
if (kind == SectionKind::Text)
return getTextSection();
else if (kind == SectionKind::BSS && getBSSSection())
return getBSSSection();
else if (getReadOnlySection() &&
(kind == SectionKind::ROData ||
kind == SectionKind::RODataMergeConst ||
kind == SectionKind::RODataMergeStr))
return getReadOnlySection();
}
return getDataSection();
}

12
lib/Target/X86/X86TargetAsmInfo.cpp
View File

@ -494,7 +494,7 @@ std::string X86TargetAsmInfo::SectionForGlobal(const GlobalValue *GV) const {
case Function::InternalLinkage:
case Function::DLLExportLinkage:
case Function::ExternalLinkage:
Name = TextSection;
Name = getTextSection();
break;
case Function::WeakLinkage:
case Function::LinkOnceLinkage:
@ -509,22 +509,22 @@ std::string X86TargetAsmInfo::SectionForGlobal(const GlobalValue *GV) const {
else {
switch (kind) {
case SectionKind::Data:
Name = DataSection;
Name = getDataSection();
break;
case SectionKind::BSS:
Name = (BSSSection ? BSSSection : DataSection);
Name = (getBSSSection() ? getBSSSection() : getDataSection());
break;
case SectionKind::ROData:
case SectionKind::RODataMergeStr:
case SectionKind::RODataMergeConst:
// FIXME: Temporary
Name = DataSection;
Name = getDataSection();
break;
case SectionKind::ThreadData:
Name = (TLSDataSection ? TLSDataSection : DataSection);
Name = (getTLSDataSection() ? getTLSDataSection() : getDataSection());
break;
case SectionKind::ThreadBSS:
Name = (TLSBSSSection ? TLSBSSSection : DataSection);
Name = (getTLSBSSSection() ? getTLSBSSSection() : getDataSection());
default:
assert(0 && "Unsuported section kind for global");
}