diff options
Diffstat (limited to 'lib/Target/TargetLoweringObjectFile.cpp')
-rw-r--r-- | lib/Target/TargetLoweringObjectFile.cpp | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp index 01139fb..faa6fbe 100644 --- a/lib/Target/TargetLoweringObjectFile.cpp +++ b/lib/Target/TargetLoweringObjectFile.cpp @@ -43,7 +43,7 @@ using namespace llvm; void TargetLoweringObjectFile::Initialize(MCContext &ctx, const TargetMachine &TM) { Ctx = &ctx; - DL = TM.getSubtargetImpl()->getDataLayout(); + DL = TM.getDataLayout(); InitMCObjectFileInfo(TM.getTargetTriple(), TM.getRelocationModel(), TM.getCodeModel(), *Ctx); } @@ -200,12 +200,12 @@ SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV, // Otherwise, just drop it into a mergable constant section. If we have // a section for this size, use it, otherwise use the arbitrary sized // mergable section. - switch (TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize( - C->getType())) { + switch (TM.getDataLayout()->getTypeAllocSize(C->getType())) { case 4: return SectionKind::getMergeableConst4(); case 8: return SectionKind::getMergeableConst8(); case 16: return SectionKind::getMergeableConst16(); - default: return SectionKind::getMergeableConst(); + default: + return SectionKind::getReadOnly(); } case Constant::LocalRelocation: @@ -270,11 +270,28 @@ SectionForGlobal(const GlobalValue *GV, SectionKind Kind, Mangler &Mang, return SelectSectionForGlobal(GV, Kind, Mang, TM); } -bool TargetLoweringObjectFile::isSectionAtomizableBySymbols( - const MCSection &Section) const { - return false; +const MCSection *TargetLoweringObjectFile::getSectionForJumpTable( + const Function &F, Mangler &Mang, const TargetMachine &TM) const { + return getSectionForConstant(SectionKind::getReadOnly(), /*C=*/nullptr); } +bool TargetLoweringObjectFile::shouldPutJumpTableInFunctionSection( + bool UsesLabelDifference, const Function &F) const { + // In PIC mode, we need to emit the jump table to the same section as the + // function body itself, otherwise the label differences won't make sense. + // FIXME: Need a better predicate for this: what about custom entries? + if (UsesLabelDifference) + return true; + + // We should also do if the section name is NULL or function is declared + // in discardable section + // FIXME: this isn't the right predicate, should be based on the MCSection + // for the function. + if (F.isWeakForLinker()) + return true; + + return false; +} /// getSectionForConstant - Given a mergable constant with the /// specified size and relocation information, return a section that it |