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-rw-r--r--lib/MC/MCContext.cpp71
1 files changed, 42 insertions, 29 deletions
diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
index 1f2f034a3acb..1e52eedaf188 100644
--- a/lib/MC/MCContext.cpp
+++ b/lib/MC/MCContext.cpp
@@ -20,7 +20,9 @@
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCSymbolCOFF.h"
+#include "llvm/MC/MCSymbolELF.h"
+#include "llvm/MC/MCSymbolMachO.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
@@ -114,13 +116,13 @@ MCSymbol *MCContext::getOrCreateSymbol(const Twine &Name) {
MCSymbol *&Sym = Symbols[NameRef];
if (!Sym)
- Sym = CreateSymbol(NameRef, false);
+ Sym = createSymbol(NameRef, false, false);
return Sym;
}
-MCSymbol *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) {
- MCSymbol *&Sym = SectionSymbols[&Section];
+MCSymbolELF *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) {
+ MCSymbolELF *&Sym = SectionSymbols[&Section];
if (Sym)
return Sym;
@@ -128,12 +130,12 @@ MCSymbol *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) {
MCSymbol *&OldSym = Symbols[Name];
if (OldSym && OldSym->isUndefined()) {
- Sym = OldSym;
- return OldSym;
+ Sym = cast<MCSymbolELF>(OldSym);
+ return Sym;
}
auto NameIter = UsedNames.insert(std::make_pair(Name, true)).first;
- Sym = new (*this) MCSymbol(&*NameIter, /*isTemporary*/ false);
+ Sym = new (*this) MCSymbolELF(&*NameIter, /*isTemporary*/ false);
if (!OldSym)
OldSym = Sym;
@@ -157,15 +159,32 @@ MCSymbol *MCContext::getOrCreateLSDASymbol(StringRef FuncName) {
FuncName);
}
-MCSymbol *MCContext::CreateSymbol(StringRef Name, bool AlwaysAddSuffix) {
- // Determine whether this is an assembler temporary or normal label, if used.
- bool IsTemporary = false;
+MCSymbol *MCContext::createSymbolImpl(const StringMapEntry<bool> *Name,
+ bool IsTemporary) {
+ if (MOFI) {
+ switch (MOFI->getObjectFileType()) {
+ case MCObjectFileInfo::IsCOFF:
+ return new (*this) MCSymbolCOFF(Name, IsTemporary);
+ case MCObjectFileInfo::IsELF:
+ return new (*this) MCSymbolELF(Name, IsTemporary);
+ case MCObjectFileInfo::IsMachO:
+ return new (*this) MCSymbolMachO(Name, IsTemporary);
+ }
+ }
+ return new (*this) MCSymbol(MCSymbol::SymbolKindUnset, Name, IsTemporary);
+}
+
+MCSymbol *MCContext::createSymbol(StringRef Name, bool AlwaysAddSuffix,
+ bool IsTemporary) {
+ if (IsTemporary && !UseNamesOnTempLabels)
+ return createSymbolImpl(nullptr, true);
+
+ // Determine whether this is an user writter assembler temporary or normal
+ // label, if used.
+ IsTemporary = false;
if (AllowTemporaryLabels)
IsTemporary = Name.startswith(MAI->getPrivateGlobalPrefix());
- if (IsTemporary && AlwaysAddSuffix && !UseNamesOnTempLabels)
- return new (*this) MCSymbol(nullptr, true);
-
SmallString<128> NewName = Name;
bool AddSuffix = AlwaysAddSuffix;
unsigned &NextUniqueID = NextID[Name];
@@ -178,8 +197,7 @@ MCSymbol *MCContext::CreateSymbol(StringRef Name, bool AlwaysAddSuffix) {
if (NameEntry.second) {
// Ok, we found a name. Have the MCSymbol object itself refer to the copy
// of the string that is embedded in the UsedNames entry.
- MCSymbol *Result = new (*this) MCSymbol(&*NameEntry.first, IsTemporary);
- return Result;
+ return createSymbolImpl(&*NameEntry.first, IsTemporary);
}
assert(IsTemporary && "Cannot rename non-temporary symbols");
AddSuffix = true;
@@ -190,13 +208,13 @@ MCSymbol *MCContext::CreateSymbol(StringRef Name, bool AlwaysAddSuffix) {
MCSymbol *MCContext::createTempSymbol(const Twine &Name, bool AlwaysAddSuffix) {
SmallString<128> NameSV;
raw_svector_ostream(NameSV) << MAI->getPrivateGlobalPrefix() << Name;
- return CreateSymbol(NameSV, AlwaysAddSuffix);
+ return createSymbol(NameSV, AlwaysAddSuffix, true);
}
MCSymbol *MCContext::createLinkerPrivateTempSymbol() {
SmallString<128> NameSV;
raw_svector_ostream(NameSV) << MAI->getLinkerPrivateGlobalPrefix() << "tmp";
- return CreateSymbol(NameSV, true);
+ return createSymbol(NameSV, true, false);
}
MCSymbol *MCContext::createTempSymbol() {
@@ -295,7 +313,7 @@ void MCContext::renameELFSection(MCSectionELF *Section, StringRef Name) {
MCSectionELF *MCContext::createELFRelSection(StringRef Name, unsigned Type,
unsigned Flags, unsigned EntrySize,
- const MCSymbol *Group,
+ const MCSymbolELF *Group,
const MCSectionELF *Associated) {
StringMap<bool>::iterator I;
bool Inserted;
@@ -310,9 +328,9 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
unsigned Flags, unsigned EntrySize,
StringRef Group, unsigned UniqueID,
const char *BeginSymName) {
- MCSymbol *GroupSym = nullptr;
+ MCSymbolELF *GroupSym = nullptr;
if (!Group.empty())
- GroupSym = getOrCreateSymbol(Group);
+ GroupSym = cast<MCSymbolELF>(getOrCreateSymbol(Group));
return getELFSection(Section, Type, Flags, EntrySize, GroupSym, UniqueID,
BeginSymName, nullptr);
@@ -320,7 +338,7 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
unsigned Flags, unsigned EntrySize,
- const MCSymbol *GroupSym,
+ const MCSymbolELF *GroupSym,
unsigned UniqueID,
const char *BeginSymName,
const MCSectionELF *Associated) {
@@ -353,7 +371,7 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
return Result;
}
-MCSectionELF *MCContext::createELFGroupSection(const MCSymbol *Group) {
+MCSectionELF *MCContext::createELFGroupSection(const MCSymbolELF *Group) {
MCSectionELF *Result = new (*this)
MCSectionELF(".group", ELF::SHT_GROUP, 0, SectionKind::getReadOnly(), 4,
Group, ~0, nullptr, nullptr);
@@ -447,13 +465,8 @@ bool MCContext::isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID) {
/// Remove empty sections from SectionStartEndSyms, to avoid generating
/// useless debug info for them.
void MCContext::finalizeDwarfSections(MCStreamer &MCOS) {
- std::vector<MCSection *> Keep;
- for (MCSection *Sec : SectionsForRanges) {
- if (MCOS.mayHaveInstructions(*Sec))
- Keep.push_back(Sec);
- }
- SectionsForRanges.clear();
- SectionsForRanges.insert(Keep.begin(), Keep.end());
+ SectionsForRanges.remove_if(
+ [&](MCSection *Sec) { return !MCOS.mayHaveInstructions(*Sec); });
}
void MCContext::reportFatalError(SMLoc Loc, const Twine &Msg) const {
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-26 12:58:54 +0000