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Stop emitting weak symbols into the "coal" sections.

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The Mach-O linker has been able to support the weak-def bit on any symbol for
quite a while now. The compiler however continued to place these symbols into a
"coal" section, which required the linker to map them back to the base section
name.

Replace the sections like this:

  __TEXT/__textcoal_nt   instead use  __TEXT/__text
  __TEXT/__const_coal    instead use  __TEXT/__const
  __DATA/__datacoal_nt   instead use  __DATA/__data

<rdar://problem/14265330>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185872 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2013-07-08 21:34:52 +00:00
parent 69097a29ce
commit 8722e25715
3 changed files with 83 additions and 10 deletions
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12
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -524,14 +524,14 @@ const MCSection *TargetLoweringObjectFileMachO::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
if (Kind.isText())
return GV->isWeakForLinker() ? TextCoalSection : TextSection;
// If this is weak/linkonce, put this in a coalescable section, either in text
// or data depending on if it is writable.
return TextSection;
// If this is weak/linkonce, put this in a read only or data section depending
// on whether or not it's writable.
if (GV->isWeakForLinker()) {
if (Kind.isReadOnly())
return ConstTextCoalSection;
return DataCoalSection;
return ReadOnlySection;
return DataSection;
}
// FIXME: Alignment check should be handled by section classifier.