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Add a variable to track whether or not we've used a unique section,

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e.g. linkonce, to TargetMachine and set it when we've done so
for ELF targets currently. This involved making TargetMachine
non-const in a TLOF use and propagating that change around - I'm
open to other ideas.

This will be used in a future commit to handle emitting debug
information with ranges.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199871 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2014-01-23 06:47:25 +00:00
parent fa6e5cb511
commit 80664e50cd
14 changed files with 38 additions and 33 deletions
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8
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -232,7 +232,7 @@ static const char *getSectionPrefixForGlobal(SectionKind Kind) {
const MCSection *TargetLoweringObjectFileELF::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
Mangler *Mang, TargetMachine &TM) const {
// If we have -ffunction-section or -fdata-section then we should emit the
// global value to a uniqued section specifically for it.
bool EmitUniquedSection;
@ -258,6 +258,8 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Flags |= ELF::SHF_GROUP;
}
// Set that we've used a unique section name in the target machine.
TM.setDebugUseUniqueSections(true);
return getContext().getELFSection(Name.str(),
getELFSectionType(Name.str(), Kind),
Flags, Kind, 0, Group);
@ -529,7 +531,7 @@ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
const MCSection *TargetLoweringObjectFileMachO::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
Mangler *Mang, TargetMachine &TM) const {
// Handle thread local data.
if (Kind.isThreadBSS()) return TLSBSSSection;
@ -754,7 +756,7 @@ static const char *getCOFFSectionNameForUniqueGlobal(SectionKind Kind) {
const MCSection *TargetLoweringObjectFileCOFF::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
Mangler *Mang, TargetMachine &TM) const {
// If this global is linkonce/weak and the target handles this by emitting it
// into a 'uniqued' section name, create and return the section now.