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[MC] Delete use of *structors_used.

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Jim Grosbach and Kevin Enderby think those are not used anymore.
Originally submitted by: Rafael Espindola

llvm-svn: 277973
This commit is contained in:
Davide Italiano 2016-08-08 03:30:01 +00:00
parent d5f633ab43
commit 2477d6f994
4 changed files with 0 additions and 23 deletions
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9
include/llvm/MC/MCAsmInfo.h
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@ -85,12 +85,6 @@ protected:
/// directive for emitting thread local BSS Symbols. Default is false.
bool HasMachoTBSSDirective;
/// True if the compiler should emit a ".reference .constructors_used" or
/// ".reference .destructors_used" directive after the static ctor/dtor
/// list. This directive is only emitted in Static relocation model. Default
/// is false.
bool HasStaticCtorDtorReferenceInStaticMode;
/// This is the maximum possible length of an instruction, which is needed to
/// compute the size of an inline asm. Defaults to 4.
unsigned MaxInstLength;
@ -449,9 +443,6 @@ public:
bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; }
bool hasMachoTBSSDirective() const { return HasMachoTBSSDirective; }
bool hasStaticCtorDtorReferenceInStaticMode() const {
return HasStaticCtorDtorReferenceInStaticMode;
}
unsigned getMaxInstLength() const { return MaxInstLength; }
unsigned getMinInstAlignment() const { return MinInstAlignment; }
bool getDollarIsPC() const { return DollarIsPC; }

12
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@ -1536,12 +1536,6 @@ bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
EmitXXStructorList(GV->getParent()->getDataLayout(), GV->getInitializer(),
/* isCtor */ true);
if (TM.getRelocationModel() == Reloc::Static &&
MAI->hasStaticCtorDtorReferenceInStaticMode()) {
StringRef Sym(".constructors_used");
OutStreamer->EmitSymbolAttribute(OutContext.getOrCreateSymbol(Sym),
MCSA_Reference);
}
return true;
}
@ -1549,12 +1543,6 @@ bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
EmitXXStructorList(GV->getParent()->getDataLayout(), GV->getInitializer(),
/* isCtor */ false);
if (TM.getRelocationModel() == Reloc::Static &&
MAI->hasStaticCtorDtorReferenceInStaticMode()) {
StringRef Sym(".destructors_used");
OutStreamer->EmitSymbolAttribute(OutContext.getOrCreateSymbol(Sym),
MCSA_Reference);
}
return true;
}

1
lib/MC/MCAsmInfo.cpp
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@ -31,7 +31,6 @@ MCAsmInfo::MCAsmInfo() {
HasSubsectionsViaSymbols = false;
HasMachoZeroFillDirective = false;
HasMachoTBSSDirective = false;
HasStaticCtorDtorReferenceInStaticMode = false;
MaxInstLength = 4;
MinInstAlignment = 1;
DollarIsPC = false;

1
lib/MC/MCAsmInfoDarwin.cpp
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@ -76,7 +76,6 @@ MCAsmInfoDarwin::MCAsmInfoDarwin() {
ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
HasMachoZeroFillDirective = true; // Uses .zerofill
HasMachoTBSSDirective = true; // Uses .tbss
HasStaticCtorDtorReferenceInStaticMode = true;
// FIXME: Change this once MC is the system assembler.
HasAggressiveSymbolFolding = false;