#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
InitMCObjectFileInfo(TM.getTargetTriple(),
TM.getRelocationModel(), TM.getCodeModel(), *Ctx);
}
-
+
TargetLoweringObjectFile::~TargetLoweringObjectFile() {
}
return false;
// If the global has an explicit section specified, don't put it in BSS.
- if (!GV->getSection().empty())
+ if (GV->hasSection())
return false;
// If -nozero-initialized-in-bss is specified, don't ever use BSS.
NameStr += DL->getPrivateGlobalPrefix();
TM.getNameWithPrefix(NameStr, GV, Mang);
NameStr.append(Suffix.begin(), Suffix.end());
- return Ctx->GetOrCreateSymbol(NameStr.str());
+ return Ctx->GetOrCreateSymbol(NameStr);
}
MCSymbol *TargetLoweringObjectFile::getCFIPersonalitySymbol(
// Early exit - functions should be always in text sections.
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV);
- if (GVar == 0)
+ if (!GVar)
return SectionKind::getText();
// Handle thread-local data first.
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:
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);
}
-// Lame default implementation. Calculate the section name for global.
-const MCSection *
-TargetLoweringObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
- SectionKind Kind,
- Mangler &Mang,
- const TargetMachine &TM) const{
- assert(!Kind.isThreadLocal() && "Doesn't support TLS");
-
- if (Kind.isText())
- return getTextSection();
-
- if (Kind.isBSS() && BSSSection != 0)
- return BSSSection;
+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;
- if (Kind.isReadOnly() && ReadOnlySection != 0)
- return ReadOnlySection;
+ // 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 getDataSection();
+ return false;
}
/// getSectionForConstant - Given a mergable constant with the
/// specified size and relocation information, return a section that it
/// should be placed in.
const MCSection *
-TargetLoweringObjectFile::getSectionForConstant(SectionKind Kind) const {
- if (Kind.isReadOnly() && ReadOnlySection != 0)
+TargetLoweringObjectFile::getSectionForConstant(SectionKind Kind,
+ const Constant *C) const {
+ if (Kind.isReadOnly() && ReadOnlySection != nullptr)
return ReadOnlySection;
return DataSection;
// null return could mean 'no location' & we should just do that here.
return MCSymbolRefExpr::Create(Sym, *Ctx);
}
+
+void TargetLoweringObjectFile::getNameWithPrefix(
+ SmallVectorImpl<char> &OutName, const GlobalValue *GV,
+ bool CannotUsePrivateLabel, Mangler &Mang, const TargetMachine &TM) const {
+ Mang.getNameWithPrefix(OutName, GV, CannotUsePrivateLabel);
+}