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Recommit r224935 with a fix for the ObjC++/AArch64 bug that that revision

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introduced.

A test case for the bug was already committed in r225385.

Patch by Rafael Espindola.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225534 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2015-01-09 18:55:42 +00:00
parent 98e3b1abbf
commit 4c553e0367
15 changed files with 83 additions and 104 deletions
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54
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -573,60 +573,6 @@ const MCSection *TargetLoweringObjectFileMachO::getExplicitSectionGlobal(
return S;
}
bool TargetLoweringObjectFileMachO::isSectionAtomizableBySymbols(
const MCSection &Section) const {
const MCSectionMachO &SMO = static_cast<const MCSectionMachO&>(Section);
// Sections holding 1 byte strings are atomized based on the data
// they contain.
// Sections holding 2 byte strings require symbols in order to be
// atomized.
// There is no dedicated section for 4 byte strings.
if (SMO.getKind().isMergeable1ByteCString())
return false;
if (SMO.getSegmentName() == "__TEXT" &&
SMO.getSectionName() == "__objc_classname" &&
SMO.getType() == MachO::S_CSTRING_LITERALS)
return false;
if (SMO.getSegmentName() == "__TEXT" &&
SMO.getSectionName() == "__objc_methname" &&
SMO.getType() == MachO::S_CSTRING_LITERALS)
return false;
if (SMO.getSegmentName() == "__TEXT" &&
SMO.getSectionName() == "__objc_methtype" &&
SMO.getType() == MachO::S_CSTRING_LITERALS)
return false;
if (SMO.getSegmentName() == "__DATA" &&
SMO.getSectionName() == "__cfstring")
return false;
// no_dead_strip sections are not atomized in practice.
if (SMO.hasAttribute(MachO::S_ATTR_NO_DEAD_STRIP))
return false;
switch (SMO.getType()) {
default:
return true;
// These sections are atomized at the element boundaries without using
// symbols.
case MachO::S_4BYTE_LITERALS:
case MachO::S_8BYTE_LITERALS:
case MachO::S_16BYTE_LITERALS:
case MachO::S_LITERAL_POINTERS:
case MachO::S_NON_LAZY_SYMBOL_POINTERS:
case MachO::S_LAZY_SYMBOL_POINTERS:
case MachO::S_MOD_INIT_FUNC_POINTERS:
case MachO::S_MOD_TERM_FUNC_POINTERS:
case MachO::S_INTERPOSING:
return false;
}
}
const MCSection *TargetLoweringObjectFileMachO::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler &Mang, const TargetMachine &TM) const {