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[MC] Add MCSection::NonUniqueID and delete one MCContext::getELFSection overload

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This commit is contained in:
Fangrui Song 2020-02-14 20:15:55 -08:00
parent fdfda04ad5
commit 48a7715451
6 changed files with 11 additions and 14 deletions
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10
include/llvm/MC/MCContext.h
View File

@ -435,14 +435,8 @@ namespace llvm {
MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
unsigned Flags, unsigned EntrySize,
const Twine &Group) {
return getELFSection(Section, Type, Flags, EntrySize, Group, ~0);
}
MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
unsigned Flags, unsigned EntrySize,
const Twine &Group, unsigned UniqueID) {
return getELFSection(Section, Type, Flags, EntrySize, Group, UniqueID,
nullptr);
return getELFSection(Section, Type, Flags, EntrySize, Group,
MCSection::NonUniqueID, nullptr);
}
MCSectionELF *getELFSection(const Twine &Section, unsigned Type,

2
include/llvm/MC/MCSection.h
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@ -38,6 +38,8 @@ template <> struct ilist_alloc_traits<MCFragment> {
/// current translation unit. The MCContext class uniques and creates these.
class MCSection {
public:
static constexpr unsigned NonUniqueID = ~0U;
enum SectionVariant { SV_COFF = 0, SV_ELF, SV_MachO, SV_Wasm, SV_XCOFF };
/// Express the state of bundle locked groups while emitting code.

2
include/llvm/MC/MCSectionELF.h
View File

@ -81,7 +81,7 @@ public:
bool UseCodeAlign() const override;
bool isVirtualSection() const override;
bool isUnique() const { return UniqueID != ~0U; }
bool isUnique() const { return UniqueID != NonUniqueID; }
unsigned getUniqueID() const { return UniqueID; }
const MCSection *getLinkedToSection() const {

5
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@ -1670,8 +1670,9 @@ bool AsmPrinter::doFinalization(Module &M) {
GV.getVisibility() != GlobalValue::DefaultVisibility)
continue;
OutStreamer->SwitchSection(OutContext.getELFSection(
".llvm_sympart", ELF::SHT_LLVM_SYMPART, 0, 0, "", ++UniqueID));
OutStreamer->SwitchSection(
OutContext.getELFSection(".llvm_sympart", ELF::SHT_LLVM_SYMPART, 0, 0,
"", ++UniqueID, nullptr));
OutStreamer->emitBytes(GV.getPartition());
OutStreamer->EmitZeros(1);
OutStreamer->EmitValue(

4
lib/MC/MCContext.cpp
View File

@ -433,8 +433,8 @@ MCSectionELF *MCContext::getELFSection(const Twine &Section, unsigned Type,
MCSectionELF *MCContext::createELFGroupSection(const MCSymbolELF *Group) {
return createELFSectionImpl(".group", ELF::SHT_GROUP, 0,
SectionKind::getReadOnly(), 4, Group, ~0,
nullptr);
SectionKind::getReadOnly(), 4, Group,
MCSection::NonUniqueID, nullptr);
}
MCSectionCOFF *MCContext::getCOFFSection(StringRef Section,

2
lib/Target/ARM/ARMTargetObjectFile.cpp
View File

@ -49,7 +49,7 @@ void ARMElfTargetObjectFile::Initialize(MCContext &Ctx,
// Since we cannot modify flags for an existing section, we create a new
// section with the right flags, and use 0 as the unique ID for
// execute-only text
TextSection = Ctx.getELFSection(".text", Type, Flags, 0, "", 0U);
TextSection = Ctx.getELFSection(".text", Type, Flags, 0, "", 0U, nullptr);
}
}