[llvm-commits] [llvm] r167904 - in /llvm/trunk: include/llvm/CodeGen/ include/llvm/Target/ lib/CodeGen/ lib/CodeGen/AsmPrinter/ lib/Target/ lib/Target/ARM/ lib/Target/X86/ test/CodeGen/ARM/
Chad Rosier
mcrosier at apple.com
Wed Nov 14 11:03:31 PST 2012
Anton,
I think one of the comments needs updating. See below.
On Nov 13, 2012, at 5:47 PM, Anton Korobeynikov <asl at math.spbu.ru> wrote:
> Author: asl
> Date: Tue Nov 13 19:47:00 2012
> New Revision: 167904
>
> URL: http://llvm.org/viewvc/llvm-project?rev=167904&view=rev
> Log:
> Use TARGET2 relocation for TType references on ARM.
> Do some cleanup of the code while here.
>
> Inspired by patch by Logan Chien!
>
> Added:
> llvm/trunk/test/CodeGen/ARM/arm-ttype-target2.ll
> Modified:
> llvm/trunk/include/llvm/CodeGen/AsmPrinter.h
> llvm/trunk/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
> llvm/trunk/include/llvm/Target/TargetLoweringObjectFile.h
> llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
> llvm/trunk/lib/CodeGen/AsmPrinter/DwarfException.cpp
> llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
> llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.cpp
> llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.h
> llvm/trunk/lib/Target/TargetLoweringObjectFile.cpp
> llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp
> llvm/trunk/lib/Target/X86/X86TargetObjectFile.h
>
> Modified: llvm/trunk/include/llvm/CodeGen/AsmPrinter.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/AsmPrinter.h?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/AsmPrinter.h (original)
> +++ llvm/trunk/include/llvm/CodeGen/AsmPrinter.h Tue Nov 13 19:47:00 2012
> @@ -385,10 +385,8 @@
> /// GetSizeOfEncodedValue - Return the size of the encoding in bytes.
> unsigned GetSizeOfEncodedValue(unsigned Encoding) const;
>
> - /// EmitReference - Emit a reference to a label with a specified encoding.
> - ///
> - void EmitReference(const MCSymbol *Sym, unsigned Encoding) const;
> - void EmitReference(const GlobalValue *GV, unsigned Encoding) const;
> + /// EmitReference - Emit reference to a ttype global with a specified encoding.
> + void EmitTTypeReference(const GlobalValue *GV, unsigned Encoding) const;
>
> /// EmitSectionOffset - Emit the 4-byte offset of Label from the start of
> /// its section. This can be done with a special directive if the target
>
> Modified: llvm/trunk/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h (original)
> +++ llvm/trunk/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h Tue Nov 13 19:47:00 2012
> @@ -57,11 +57,10 @@
>
> /// getExprForDwarfGlobalReference - Return an MCExpr to use for a reference
> /// to the specified global variable from exception handling information.
Should this comment be updated?
> - ///
> virtual const MCExpr *
> - getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI, unsigned Encoding,
> - MCStreamer &Streamer) const;
> + getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const;
>
> // getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
> virtual MCSymbol *
> @@ -103,12 +102,12 @@
> virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV,
> Mangler *) const;
>
> - /// getExprForDwarfGlobalReference - The mach-o version of this method
> + /// getTTypeGlobalReference - The mach-o version of this method
> /// defaults to returning a stub reference.
> virtual const MCExpr *
> - getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI, unsigned Encoding,
> - MCStreamer &Streamer) const;
> + getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const;
>
> // getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
> virtual MCSymbol *
>
> Modified: llvm/trunk/include/llvm/Target/TargetLoweringObjectFile.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLoweringObjectFile.h?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Target/TargetLoweringObjectFile.h (original)
> +++ llvm/trunk/include/llvm/Target/TargetLoweringObjectFile.h Tue Nov 13 19:47:00 2012
> @@ -27,6 +27,7 @@
> class MCExpr;
> class MCSection;
> class MCSymbol;
> + class MCSymbolRefExpr;
> class MCStreamer;
> class GlobalValue;
> class TargetMachine;
> @@ -108,13 +109,13 @@
> return 0;
> }
>
> - /// getExprForDwarfGlobalReference - Return an MCExpr to use for a reference
> + /// getTTypeGlobalReference - Return an MCExpr to use for a reference
> /// to the specified global variable from exception handling information.
> ///
> virtual const MCExpr *
> - getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI, unsigned Encoding,
> - MCStreamer &Streamer) const;
> + getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const;
>
> // getCFIPersonalitySymbol - The symbol that gets passed to .cfi_personality.
> virtual MCSymbol *
> @@ -123,8 +124,8 @@
>
> ///
> const MCExpr *
> - getExprForDwarfReference(const MCSymbol *Sym, unsigned Encoding,
> - MCStreamer &Streamer) const;
> + getTTypeReference(const MCSymbolRefExpr *Sym, unsigned Encoding,
> + MCStreamer &Streamer) const;
>
> virtual const MCSection *
> getStaticCtorSection(unsigned Priority = 65535) const {
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp Tue Nov 13 19:47:00 2012
> @@ -119,19 +119,11 @@
> }
> }
>
> -void AsmPrinter::EmitReference(const MCSymbol *Sym, unsigned Encoding) const {
> +void AsmPrinter::EmitTTypeReference(const GlobalValue *GV, unsigned Encoding)const{
> const TargetLoweringObjectFile &TLOF = getObjFileLowering();
>
> const MCExpr *Exp =
> - TLOF.getExprForDwarfReference(Sym, Encoding, OutStreamer);
> - OutStreamer.EmitAbsValue(Exp, GetSizeOfEncodedValue(Encoding));
> -}
> -
> -void AsmPrinter::EmitReference(const GlobalValue *GV, unsigned Encoding)const{
> - const TargetLoweringObjectFile &TLOF = getObjFileLowering();
> -
> - const MCExpr *Exp =
> - TLOF.getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, OutStreamer);
> + TLOF.getTTypeGlobalReference(GV, Mang, MMI, Encoding, OutStreamer);
> OutStreamer.EmitValue(Exp, GetSizeOfEncodedValue(Encoding), /*addrspace*/0);
> }
>
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfException.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfException.cpp?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfException.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfException.cpp Tue Nov 13 19:47:00 2012
> @@ -685,7 +685,7 @@
> if (VerboseAsm)
> Asm->OutStreamer.AddComment("TypeInfo " + Twine(Entry--));
> if (GV)
> - Asm->EmitReference(GV, TTypeEncoding);
> + Asm->EmitTTypeReference(GV, TTypeEncoding);
> else
> Asm->OutStreamer.EmitIntValue(0,Asm->GetSizeOfEncodedValue(TTypeEncoding),
> 0);
>
> Modified: llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp (original)
> +++ llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp Tue Nov 13 19:47:00 2012
> @@ -88,6 +88,36 @@
> Streamer.EmitSymbolValue(Sym, Size);
> }
>
> +const MCExpr *TargetLoweringObjectFileELF::
> +getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const {
> +
> + if (Encoding & dwarf::DW_EH_PE_indirect) {
> + MachineModuleInfoELF &ELFMMI = MMI->getObjFileInfo<MachineModuleInfoELF>();
> +
> + SmallString<128> Name;
> + Mang->getNameWithPrefix(Name, GV, true);
> + Name += ".DW.stub";
> +
> + // Add information about the stub reference to ELFMMI so that the stub
> + // gets emitted by the asmprinter.
> + MCSymbol *SSym = getContext().GetOrCreateSymbol(Name.str());
> + MachineModuleInfoImpl::StubValueTy &StubSym = ELFMMI.getGVStubEntry(SSym);
> + if (StubSym.getPointer() == 0) {
> + MCSymbol *Sym = Mang->getSymbol(GV);
> + StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
> + }
> +
> + return TargetLoweringObjectFile::
> + getTTypeReference(MCSymbolRefExpr::Create(SSym, getContext()),
> + Encoding & ~dwarf::DW_EH_PE_indirect, Streamer);
> + }
> +
> + return TargetLoweringObjectFile::
> + getTTypeGlobalReference(GV, Mang, MMI, Encoding, Streamer);
> +}
> +
> static SectionKind
> getELFKindForNamedSection(StringRef Name, SectionKind K) {
> // N.B.: The defaults used in here are no the same ones used in MC.
> @@ -314,35 +344,6 @@
> return DataRelROSection;
> }
>
> -const MCExpr *TargetLoweringObjectFileELF::
> -getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI,
> - unsigned Encoding, MCStreamer &Streamer) const {
> -
> - if (Encoding & dwarf::DW_EH_PE_indirect) {
> - MachineModuleInfoELF &ELFMMI = MMI->getObjFileInfo<MachineModuleInfoELF>();
> -
> - SmallString<128> Name;
> - Mang->getNameWithPrefix(Name, GV, true);
> - Name += ".DW.stub";
> -
> - // Add information about the stub reference to ELFMMI so that the stub
> - // gets emitted by the asmprinter.
> - MCSymbol *SSym = getContext().GetOrCreateSymbol(Name.str());
> - MachineModuleInfoImpl::StubValueTy &StubSym = ELFMMI.getGVStubEntry(SSym);
> - if (StubSym.getPointer() == 0) {
> - MCSymbol *Sym = Mang->getSymbol(GV);
> - StubSym = MachineModuleInfoImpl::StubValueTy(Sym, !GV->hasLocalLinkage());
> - }
> -
> - return TargetLoweringObjectFile::
> - getExprForDwarfReference(SSym, Encoding & ~dwarf::DW_EH_PE_indirect, Streamer);
> - }
> -
> - return TargetLoweringObjectFile::
> - getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, Streamer);
> -}
> -
> const MCSection *
> TargetLoweringObjectFileELF::getStaticCtorSection(unsigned Priority) const {
> // The default scheme is .ctor / .dtor, so we have to invert the priority
> @@ -604,9 +605,9 @@
> }
>
> const MCExpr *TargetLoweringObjectFileMachO::
> -getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI, unsigned Encoding,
> - MCStreamer &Streamer) const {
> +getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const {
> // The mach-o version of this method defaults to returning a stub reference.
>
> if (Encoding & DW_EH_PE_indirect) {
> @@ -629,11 +630,12 @@
> }
>
> return TargetLoweringObjectFile::
> - getExprForDwarfReference(SSym, Encoding & ~dwarf::DW_EH_PE_indirect, Streamer);
> + getTTypeReference(MCSymbolRefExpr::Create(SSym, getContext()),
> + Encoding & ~dwarf::DW_EH_PE_indirect, Streamer);
> }
>
> return TargetLoweringObjectFile::
> - getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, Streamer);
> + getTTypeGlobalReference(GV, Mang, MMI, Encoding, Streamer);
> }
>
> MCSymbol *TargetLoweringObjectFileMachO::
>
> Modified: llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.cpp?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.cpp (original)
> +++ llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.cpp Tue Nov 13 19:47:00 2012
> @@ -10,10 +10,12 @@
> #include "ARMTargetObjectFile.h"
> #include "ARMSubtarget.h"
> #include "llvm/MC/MCContext.h"
> +#include "llvm/MC/MCExpr.h"
> #include "llvm/MC/MCSectionELF.h"
> +#include "llvm/Target/Mangler.h"
> +#include "llvm/Target/TargetMachine.h"
> #include "llvm/Support/Dwarf.h"
> #include "llvm/Support/ELF.h"
> -#include "llvm/Target/TargetMachine.h"
> #include "llvm/ADT/StringExtras.h"
> using namespace llvm;
> using namespace dwarf;
> @@ -38,3 +40,14 @@
> 0,
> SectionKind::getMetadata());
> }
> +
> +const MCExpr *ARMElfTargetObjectFile::
> +getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const {
> + assert(Encoding == DW_EH_PE_absptr && "Can handle absptr encoding only");
> +
> + return MCSymbolRefExpr::Create(Mang->getSymbol(GV),
> + MCSymbolRefExpr::VK_ARM_TARGET2,
> + getContext());
> +}
>
> Modified: llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.h?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.h (original)
> +++ llvm/trunk/lib/Target/ARM/ARMTargetObjectFile.h Tue Nov 13 19:47:00 2012
> @@ -28,6 +28,11 @@
>
> virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
>
> + const MCExpr *
> + getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const;
> +
> virtual const MCSection *getAttributesSection() const {
> return AttributesSection;
> }
>
> Modified: llvm/trunk/lib/Target/TargetLoweringObjectFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/TargetLoweringObjectFile.cpp?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/TargetLoweringObjectFile.cpp (original)
> +++ llvm/trunk/lib/Target/TargetLoweringObjectFile.cpp Tue Nov 13 19:47:00 2012
> @@ -285,35 +285,35 @@
> return DataSection;
> }
>
> -/// getExprForDwarfGlobalReference - Return an MCExpr to use for a
> +/// getTTypeGlobalReference - Return an MCExpr to use for a
> /// reference to the specified global variable from exception
> /// handling information.
> const MCExpr *TargetLoweringObjectFile::
> -getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI, unsigned Encoding,
> - MCStreamer &Streamer) const {
> - const MCSymbol *Sym = Mang->getSymbol(GV);
> - return getExprForDwarfReference(Sym, Encoding, Streamer);
> +getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const {
> + const MCSymbolRefExpr *Ref =
> + MCSymbolRefExpr::Create(Mang->getSymbol(GV), getContext());
> +
> + return getTTypeReference(Ref, Encoding, Streamer);
> }
>
> const MCExpr *TargetLoweringObjectFile::
> -getExprForDwarfReference(const MCSymbol *Sym, unsigned Encoding,
> - MCStreamer &Streamer) const {
> - const MCExpr *Res = MCSymbolRefExpr::Create(Sym, getContext());
> -
> +getTTypeReference(const MCSymbolRefExpr *Sym, unsigned Encoding,
> + MCStreamer &Streamer) const {
> switch (Encoding & 0x70) {
> default:
> report_fatal_error("We do not support this DWARF encoding yet!");
> case dwarf::DW_EH_PE_absptr:
> // Do nothing special
> - return Res;
> + return Sym;
> case dwarf::DW_EH_PE_pcrel: {
> // Emit a label to the streamer for the current position. This gives us
> // .-foo addressing.
> MCSymbol *PCSym = getContext().CreateTempSymbol();
> Streamer.EmitLabel(PCSym);
> const MCExpr *PC = MCSymbolRefExpr::Create(PCSym, getContext());
> - return MCBinaryExpr::CreateSub(Res, PC, getContext());
> + return MCBinaryExpr::CreateSub(Sym, PC, getContext());
> }
> }
> }
>
> Modified: llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp (original)
> +++ llvm/trunk/lib/Target/X86/X86TargetObjectFile.cpp Tue Nov 13 19:47:00 2012
> @@ -22,9 +22,9 @@
> using namespace dwarf;
>
> const MCExpr *X86_64MachoTargetObjectFile::
> -getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI, unsigned Encoding,
> - MCStreamer &Streamer) const {
> +getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const {
>
> // On Darwin/X86-64, we can reference dwarf symbols with foo at GOTPCREL+4, which
> // is an indirect pc-relative reference.
> @@ -37,7 +37,7 @@
> }
>
> return TargetLoweringObjectFileMachO::
> - getExprForDwarfGlobalReference(GV, Mang, MMI, Encoding, Streamer);
> + getTTypeGlobalReference(GV, Mang, MMI, Encoding, Streamer);
> }
>
> MCSymbol *X86_64MachoTargetObjectFile::
>
> Modified: llvm/trunk/lib/Target/X86/X86TargetObjectFile.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86TargetObjectFile.h?rev=167904&r1=167903&r2=167904&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/X86/X86TargetObjectFile.h (original)
> +++ llvm/trunk/lib/Target/X86/X86TargetObjectFile.h Tue Nov 13 19:47:00 2012
> @@ -21,9 +21,9 @@
> class X86_64MachoTargetObjectFile : public TargetLoweringObjectFileMachO {
> public:
> virtual const MCExpr *
> - getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
> - MachineModuleInfo *MMI, unsigned Encoding,
> - MCStreamer &Streamer) const;
> + getTTypeGlobalReference(const GlobalValue *GV, Mangler *Mang,
> + MachineModuleInfo *MMI, unsigned Encoding,
> + MCStreamer &Streamer) const;
>
> // getCFIPersonalitySymbol - The symbol that gets passed to
> // .cfi_personality.
>
> Added: llvm/trunk/test/CodeGen/ARM/arm-ttype-target2.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/arm-ttype-target2.ll?rev=167904&view=auto
> ==============================================================================
> --- llvm/trunk/test/CodeGen/ARM/arm-ttype-target2.ll (added)
> +++ llvm/trunk/test/CodeGen/ARM/arm-ttype-target2.ll Tue Nov 13 19:47:00 2012
> @@ -0,0 +1,44 @@
> +; RUN: llc -mtriple=armv7-none-linux-gnueabi -arm-enable-ehabi -arm-enable-ehabi-descriptors < %s | FileCheck %s
> +
> + at _ZTVN10__cxxabiv117__class_type_infoE = external global i8*
> + at _ZTS3Foo = linkonce_odr constant [5 x i8] c"3Foo\00"
> + at _ZTI3Foo = linkonce_odr unnamed_addr constant { i8*, i8* } { i8* bitcast (i8** getelementptr inbounds (i8** @_ZTVN10__cxxabiv117__class_type_infoE, i32 2) to i8*), i8* getelementptr inbounds ([5 x i8]* @_ZTS3Foo, i32 0, i32 0) }
> +
> +define i32 @main() {
> +entry:
> + invoke void @_Z3foov()
> + to label %return unwind label %lpad
> +
> +lpad: ; preds = %entry
> + %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
> + catch i8* bitcast ({ i8*, i8* }* @_ZTI3Foo to i8*)
> + %1 = extractvalue { i8*, i32 } %0, 1
> + %2 = tail call i32 @llvm.eh.typeid.for(i8* bitcast ({ i8*, i8* }* @_ZTI3Foo to i8*)) nounwind
> +; CHECK: _ZTI3Foo(target2)
> +
> + %matches = icmp eq i32 %1, %2
> + br i1 %matches, label %catch, label %eh.resume
> +
> +catch: ; preds = %lpad
> + %3 = extractvalue { i8*, i32 } %0, 0
> + %4 = tail call i8* @__cxa_begin_catch(i8* %3) nounwind
> + tail call void @__cxa_end_catch()
> + br label %return
> +
> +return: ; preds = %entry, %catch
> + %retval.0 = phi i32 [ 1, %catch ], [ 0, %entry ]
> + ret i32 %retval.0
> +
> +eh.resume: ; preds = %lpad
> + resume { i8*, i32 } %0
> +}
> +
> +declare void @_Z3foov()
> +
> +declare i32 @__gxx_personality_v0(...)
> +
> +declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone
> +
> +declare i8* @__cxa_begin_catch(i8*)
> +
> +declare void @__cxa_end_catch()
>
>
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