forked from OSchip/llvm-project
Stop producing func.eh symbols on Darwin.
According Nick Kledzik (http://llvm.org/bugs/show_bug.cgi?id=19430#c2): "... mach-o no longer needs names in the __eh_frame section (and has not for years)." Iain Sandoe confirms it is also unnecessary for their old darwin support. llvm-svn: 211500
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@ -33,12 +33,6 @@ protected:
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/// weak_definition of constant 0 for an omitted EH frame.
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bool SupportsWeakOmittedEHFrame;
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/// IsFunctionEHFrameSymbolPrivate - This flag is set to true if the
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/// "EH_frame" symbol for EH information should be an assembler temporary (aka
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/// private linkage, aka an L or .L label) or false if it should be a normal
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/// non-.globl label. This defaults to true.
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bool IsFunctionEHFrameSymbolPrivate;
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/// SupportsCompactUnwindWithoutEHFrame - True if the target object file
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/// supports emitting a compact unwind section without an associated EH frame
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/// section.
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@ -201,9 +195,6 @@ public:
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void InitMCObjectFileInfo(StringRef TT, Reloc::Model RM, CodeModel::Model CM,
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MCContext &ctx);
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bool isFunctionEHFrameSymbolPrivate() const {
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return IsFunctionEHFrameSymbolPrivate;
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}
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bool getSupportsWeakOmittedEHFrame() const {
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return SupportsWeakOmittedEHFrame;
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}
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@ -1459,13 +1459,6 @@ MCSymbol *FrameEmitterImpl::EmitFDE(MCObjectStreamer &streamer,
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const MCObjectFileInfo *MOFI = context.getObjectFileInfo();
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bool verboseAsm = streamer.isVerboseAsm();
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if (IsEH && frame.Function && !MOFI->isFunctionEHFrameSymbolPrivate()) {
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MCSymbol *EHSym =
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context.GetOrCreateSymbol(frame.Function->getName() + Twine(".eh"));
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streamer.EmitEHSymAttributes(frame.Function, EHSym);
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streamer.EmitLabel(EHSym);
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}
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// Length
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const MCExpr *Length = MakeStartMinusEndExpr(streamer, *fdeStart, *fdeEnd, 0);
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if (verboseAsm) streamer.AddComment("FDE Length");
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@ -41,7 +41,6 @@ static bool useCompactUnwind(const Triple &T) {
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void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
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// MachO
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IsFunctionEHFrameSymbolPrivate = false;
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SupportsWeakOmittedEHFrame = false;
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if (T.isOSDarwin() &&
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@ -802,7 +801,6 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef T, Reloc::Model relocm,
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// Common.
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CommDirectiveSupportsAlignment = true;
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SupportsWeakOmittedEHFrame = true;
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IsFunctionEHFrameSymbolPrivate = true;
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SupportsCompactUnwindWithoutEHFrame = false;
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PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
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@ -24,7 +24,7 @@ _bar:
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// OLD64: Relocations [
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// OLD64-NEXT: Section __eh_frame {
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// OLD64-NEXT: 0x20 0 3 1 X86_64_RELOC_SUBTRACTOR 0 _bar.eh
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// OLD64-NEXT: 0x20 0 3 0 X86_64_RELOC_SUBTRACTOR 0
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// OLD64-NEXT: 0x20 0 3 1 X86_64_RELOC_UNSIGNED 0 _bar
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// OLD64-NEXT: }
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// OLD64-NEXT: ]
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@ -1,25 +0,0 @@
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// RUN: llvm-mc -filetype=obj -triple i686-apple-darwin %s -o - | llvm-readobj -t | FileCheck %s
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// Make sure that the exception handling data has the same visibility as the
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// function it's generated for.
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.private_extern _main
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.globl _main
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_main:
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.cfi_startproc
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retl
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.cfi_endproc
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"_-[NSString(local) isNullOrNil]":
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.cfi_startproc
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retl
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.cfi_endproc
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// CHECK: Name: _-[NSString(local) isNullOrNil].eh
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// CHECK: Name: _main
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// CHECK-NEXT: PrivateExtern
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// CHECK: Name: _main.eh
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// CHECK-NEXT: PrivateExtern
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