[lld] r267164 - GC entries of SHF_MERGE sections.
Peter Collingbourne via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 22 12:23:16 PDT 2016
Up to you. Reverting locally gets me past the problem for now.
Peter
On Fri, Apr 22, 2016 at 12:22 PM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:
> Debugging.
>
> Do you want me to revert for now?
>
> Cheers,
> Rafael
>
>
> On 22 April 2016 at 15:14, Peter Collingbourne <peter at pcc.me.uk> wrote:
> > This change appears to break the bootstrap when using the steps given in
> > PR27482.
> >
> > I get:
> >
> > ld.lld: ../lib/MC/StringTableBuilder.cpp:180: size_t
> > llvm::StringTableBuilder::getOffset(llvm::StringRef) const: Assertion `I
> !=
> > StringIndexMap.end() && "String is not in table!"' failed.
> >
> > when linking llvm-profdata during stage 2.
> >
> > Peter
> >
> > On Fri, Apr 22, 2016 at 9:46 AM, Rafael Espindola via llvm-commits
> > <llvm-commits at lists.llvm.org> wrote:
> >>
> >> Author: rafael
> >> Date: Fri Apr 22 11:46:08 2016
> >> New Revision: 267164
> >>
> >> URL: http://llvm.org/viewvc/llvm-project?rev=267164&view=rev
> >> Log:
> >> GC entries of SHF_MERGE sections.
> >>
> >> It is a fairly direct extension of the gc algorithm. For merge sections
> >> instead of remembering just a live bit, we remember which offsets were
> >> used.
> >>
> >> This reduces the .rodata sections in chromium from 9648861 to 9477472
> >> bytes.
> >>
> >> Added:
> >> lld/trunk/test/ELF/gc-sections-merge-addend.s
> >> lld/trunk/test/ELF/gc-sections-merge-implicit-addend.s
> >> lld/trunk/test/ELF/gc-sections-merge.s
> >> Modified:
> >> lld/trunk/ELF/InputSection.cpp
> >> lld/trunk/ELF/InputSection.h
> >> lld/trunk/ELF/MarkLive.cpp
> >> lld/trunk/ELF/OutputSections.cpp
> >>
> >> Modified: lld/trunk/ELF/InputSection.cpp
> >> URL:
> >>
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/InputSection.cpp?rev=267164&r1=267163&r2=267164&view=diff
> >>
> >>
> ==============================================================================
> >> --- lld/trunk/ELF/InputSection.cpp (original)
> >> +++ lld/trunk/ELF/InputSection.cpp Fri Apr 22 11:46:08 2016
> >> @@ -77,23 +77,41 @@ InputSectionBase<ELFT>::getOffset(const
> >> return getOffset(Sym.Value);
> >> }
> >>
> >> -// Returns a section that Rel relocation is pointing to.
> >> template <class ELFT>
> >> -InputSectionBase<ELFT> *
> >> -InputSectionBase<ELFT>::getRelocTarget(const Elf_Rel &Rel) const {
> >> - // Global symbol
> >> +static DefinedRegular<ELFT> *getRelocTargetSym(ObjectFile<ELFT> *File,
> >> + const typename ELFT::Rel
> >> &Rel) {
> >> uint32_t SymIndex = Rel.getSymbol(Config->Mips64EL);
> >> SymbolBody &B = File->getSymbolBody(SymIndex).repl();
> >> if (auto *D = dyn_cast<DefinedRegular<ELFT>>(&B))
> >> if (D->Section)
> >> - return D->Section->Repl;
> >> + return D;
> >> return nullptr;
> >> }
> >>
> >> +// Returns a section that Rel relocation is pointing to.
> >> +template <class ELFT>
> >> +std::pair<InputSectionBase<ELFT> *, typename ELFT::uint>
> >> +InputSectionBase<ELFT>::getRelocTarget(const Elf_Rel &Rel) const {
> >> + auto *D = getRelocTargetSym(File, Rel);
> >> + if (!D)
> >> + return std::make_pair(nullptr, 0);
> >> + if (!D->isSection())
> >> + return std::make_pair(D->Section->Repl, D->Value);
> >> + const uint8_t *BufLoc = getSectionData().begin() + Rel.r_offset;
> >> + uintX_t Addend =
> >> + Target->getImplicitAddend(BufLoc, Rel.getType(Config->Mips64EL));
> >> + return std::make_pair(D->Section->Repl, D->Value + Addend);
> >> +}
> >> +
> >> template <class ELFT>
> >> -InputSectionBase<ELFT> *
> >> +std::pair<InputSectionBase<ELFT> *, typename ELFT::uint>
> >> InputSectionBase<ELFT>::getRelocTarget(const Elf_Rela &Rel) const {
> >> - return getRelocTarget(reinterpret_cast<const Elf_Rel &>(Rel));
> >> + auto *D = getRelocTargetSym(File, Rel);
> >> + if (!D)
> >> + return std::make_pair(nullptr, 0);
> >> + if (!D->isSection())
> >> + return std::make_pair(D->Section->Repl, D->Value);
> >> + return std::make_pair(D->Section->Repl, D->Value + Rel.r_addend);
> >> }
> >>
> >> template <class ELFT>
> >> @@ -368,10 +386,49 @@ typename ELFT::uint EHInputSection<ELFT>
> >> return Base + Addend;
> >> }
> >>
> >> +static size_t findNull(StringRef S, size_t EntSize) {
> >> + // Optimize the common case.
> >> + if (EntSize == 1)
> >> + return S.find(0);
> >> +
> >> + for (unsigned I = 0, N = S.size(); I != N; I += EntSize) {
> >> + const char *B = S.begin() + I;
> >> + if (std::all_of(B, B + EntSize, [](char C) { return C == 0; }))
> >> + return I;
> >> + }
> >> + return StringRef::npos;
> >> +}
> >> +
> >> template <class ELFT>
> >> MergeInputSection<ELFT>::MergeInputSection(elf::ObjectFile<ELFT> *F,
> >> const Elf_Shdr *Header)
> >> - : SplitInputSection<ELFT>(F, Header, InputSectionBase<ELFT>::Merge)
> >> {}
> >> + : SplitInputSection<ELFT>(F, Header,
> InputSectionBase<ELFT>::Merge) {
> >> + uintX_t EntSize = Header->sh_entsize;
> >> + ArrayRef<uint8_t> D = this->getSectionData();
> >> + StringRef Data((const char *)D.data(), D.size());
> >> + std::vector<std::pair<uintX_t, uintX_t>> &Offsets = this->Offsets;
> >> +
> >> + uintX_t V = Config->GcSections ? -1 : 0;
> >> + if (Header->sh_flags & SHF_STRINGS) {
> >> + uintX_t Offset = 0;
> >> + while (!Data.empty()) {
> >> + size_t End = findNull(Data, EntSize);
> >> + if (End == StringRef::npos)
> >> + fatal("string is not null terminated");
> >> + Offsets.push_back(std::make_pair(Offset, V));
> >> + uintX_t Size = End + EntSize;
> >> + Data = Data.substr(Size);
> >> + Offset += Size;
> >> + }
> >> + return;
> >> + }
> >> +
> >> + // If this is not of type string, every entry has the same size.
> >> + size_t Size = Data.size();
> >> + assert((Size % EntSize) == 0);
> >> + for (unsigned I = 0, N = Size; I != N; I += EntSize)
> >> + Offsets.push_back(std::make_pair(I, V));
> >> +}
> >>
> >> template <class ELFT>
> >> bool MergeInputSection<ELFT>::classof(const InputSectionBase<ELFT> *S)
> {
> >>
> >> Modified: lld/trunk/ELF/InputSection.h
> >> URL:
> >>
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/InputSection.h?rev=267164&r1=267163&r2=267164&view=diff
> >>
> >>
> ==============================================================================
> >> --- lld/trunk/ELF/InputSection.h (original)
> >> +++ lld/trunk/ELF/InputSection.h Fri Apr 22 11:46:08 2016
> >> @@ -124,8 +124,10 @@ public:
> >> ArrayRef<uint8_t> getSectionData() const;
> >>
> >> // Returns a section that Rel is pointing to. Used by the garbage
> >> collector.
> >> - InputSectionBase<ELFT> *getRelocTarget(const Elf_Rel &Rel) const;
> >> - InputSectionBase<ELFT> *getRelocTarget(const Elf_Rela &Rel) const;
> >> + std::pair<InputSectionBase<ELFT> *, uintX_t>
> >> + getRelocTarget(const Elf_Rel &Rel) const;
> >> + std::pair<InputSectionBase<ELFT> *, uintX_t>
> >> + getRelocTarget(const Elf_Rela &Rel) const;
> >>
> >> void relocate(uint8_t *Buf, uint8_t *BufEnd);
> >> std::vector<Relocation> Relocations;
> >>
> >> Modified: lld/trunk/ELF/MarkLive.cpp
> >> URL:
> >>
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/MarkLive.cpp?rev=267164&r1=267163&r2=267164&view=diff
> >>
> >>
> ==============================================================================
> >> --- lld/trunk/ELF/MarkLive.cpp (original)
> >> +++ lld/trunk/ELF/MarkLive.cpp Fri Apr 22 11:46:08 2016
> >> @@ -40,20 +40,29 @@ using namespace lld::elf;
> >>
> >> // Calls Fn for each section that Sec refers to via relocations.
> >> template <class ELFT>
> >> -static void forEachSuccessor(InputSection<ELFT> *Sec,
> >> - std::function<void(InputSectionBase<ELFT>
> >> *)> Fn) {
> >> +static void forEachSuccessor(
> >> + InputSection<ELFT> *Sec,
> >> + std::function<void(InputSectionBase<ELFT> *, typename ELFT::uint
> >> Offset)>
> >> + Fn) {
> >> typedef typename ELFT::Rel Elf_Rel;
> >> typedef typename ELFT::Rela Elf_Rela;
> >> typedef typename ELFT::Shdr Elf_Shdr;
> >> + typedef typename ELFT::uint uintX_t;
> >>
> >> ELFFile<ELFT> &Obj = Sec->getFile()->getObj();
> >> for (const Elf_Shdr *RelSec : Sec->RelocSections) {
> >> if (RelSec->sh_type == SHT_RELA) {
> >> - for (const Elf_Rela &RI : Obj.relas(RelSec))
> >> - Fn(Sec->getRelocTarget(RI));
> >> + for (const Elf_Rela &RI : Obj.relas(RelSec)) {
> >> + std::pair<InputSectionBase<ELFT> *, uintX_t> P =
> >> + Sec->getRelocTarget(RI);
> >> + Fn(P.first, P.second);
> >> + }
> >> } else {
> >> - for (const Elf_Rel &RI : Obj.rels(RelSec))
> >> - Fn(Sec->getRelocTarget(RI));
> >> + for (const Elf_Rel &RI : Obj.rels(RelSec)) {
> >> + std::pair<InputSectionBase<ELFT> *, uintX_t> P =
> >> + Sec->getRelocTarget(RI);
> >> + Fn(P.first, P.second);
> >> + }
> >> }
> >> }
> >> }
> >> @@ -85,10 +94,18 @@ template <class ELFT> static bool isRese
> >> // Starting from GC-root sections, this function visits all reachable
> >> // sections to set their "Live" bits.
> >> template <class ELFT> void elf::markLive(SymbolTable<ELFT> *Symtab) {
> >> + typedef typename ELFT::uint uintX_t;
> >> SmallVector<InputSection<ELFT> *, 256> Q;
> >>
> >> - auto Enqueue = [&](InputSectionBase<ELFT> *Sec) {
> >> - if (!Sec || Sec->Live)
> >> + auto Enqueue = [&](InputSectionBase<ELFT> *Sec, uintX_t Offset) {
> >> + if (!Sec)
> >> + return;
> >> + if (auto *MS = dyn_cast<MergeInputSection<ELFT>>(Sec)) {
> >> + std::pair<std::pair<uintX_t, uintX_t> *, uintX_t> T =
> >> + MS->getRangeAndSize(Offset);
> >> + T.first->second = 0;
> >> + }
> >> + if (Sec->Live)
> >> return;
> >> Sec->Live = true;
> >> if (InputSection<ELFT> *S = dyn_cast<InputSection<ELFT>>(Sec))
> >> @@ -98,7 +115,7 @@ template <class ELFT> void elf::markLive
> >> auto MarkSymbol = [&](SymbolBody *Sym) {
> >> if (Sym)
> >> if (auto *D = dyn_cast<DefinedRegular<ELFT>>(Sym))
> >> - Enqueue(D->Section);
> >> + Enqueue(D->Section, D->Value);
> >> };
> >>
> >> // Add GC root symbols.
> >> @@ -125,7 +142,7 @@ template <class ELFT> void elf::markLive
> >> for (InputSectionBase<ELFT> *Sec : F->getSections())
> >> if (Sec && Sec != &InputSection<ELFT>::Discarded)
> >> if (isReserved(Sec) || Script<ELFT>::X->shouldKeep(Sec))
> >> - Enqueue(Sec);
> >> + Enqueue(Sec, 0);
> >>
> >> // Mark all reachable sections.
> >> while (!Q.empty())
> >>
> >> Modified: lld/trunk/ELF/OutputSections.cpp
> >> URL:
> >>
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/OutputSections.cpp?rev=267164&r1=267163&r2=267164&view=diff
> >>
> >>
> ==============================================================================
> >> --- lld/trunk/ELF/OutputSections.cpp (original)
> >> +++ lld/trunk/ELF/OutputSections.cpp Fri Apr 22 11:46:08 2016
> >> @@ -1132,7 +1132,7 @@ void EHOutputSection<ELFT>::addSectionAu
> >> } else {
> >> if (!HasReloc)
> >> fatal("FDE doesn't reference another section");
> >> - InputSectionBase<ELFT> *Target = S->getRelocTarget(*RelI);
> >> + InputSectionBase<ELFT> *Target = S->getRelocTarget(*RelI).first;
> >> if (Target && Target->Live) {
> >> uint32_t CieOffset = Offset + 4 - ID;
> >> auto I = OffsetToIndex.find(CieOffset);
> >> @@ -1227,19 +1227,6 @@ template <class ELFT> void MergeOutputSe
> >> }
> >> }
> >>
> >> -static size_t findNull(StringRef S, size_t EntSize) {
> >> - // Optimize the common case.
> >> - if (EntSize == 1)
> >> - return S.find(0);
> >> -
> >> - for (unsigned I = 0, N = S.size(); I != N; I += EntSize) {
> >> - const char *B = S.begin() + I;
> >> - if (std::all_of(B, B + EntSize, [](char C) { return C == 0; }))
> >> - return I;
> >> - }
> >> - return StringRef::npos;
> >> -}
> >> -
> >> template <class ELFT>
> >> void MergeOutputSection<ELFT>::addSection(InputSectionBase<ELFT> *C) {
> >> auto *S = cast<MergeInputSection<ELFT>>(C);
> >> @@ -1250,31 +1237,32 @@ void MergeOutputSection<ELFT>::addSectio
> >> StringRef Data((const char *)D.data(), D.size());
> >> uintX_t EntSize = S->getSectionHdr()->sh_entsize;
> >> this->Header.sh_entsize = EntSize;
> >> + MutableArrayRef<std::pair<uintX_t, uintX_t>> Offsets = S->Offsets;
> >>
> >> // If this is of type string, the contents are null-terminated
> strings.
> >> if (this->Header.sh_flags & SHF_STRINGS) {
> >> - uintX_t Offset = 0;
> >> - while (!Data.empty()) {
> >> - size_t End = findNull(Data, EntSize);
> >> - if (End == StringRef::npos)
> >> - fatal("string is not null terminated");
> >> - StringRef Entry = Data.substr(0, End + EntSize);
> >> + for (unsigned I = 0, N = Offsets.size(); I != N; ++I) {
> >> + auto &P = Offsets[I];
> >> + if (P.second == (uintX_t)-1)
> >> + continue;
> >> +
> >> + uintX_t Start = P.first;
> >> + uintX_t End = (I == N - 1) ? Data.size() : Offsets[I + 1].first;
> >> + StringRef Entry = Data.substr(Start, End - Start);
> >> uintX_t OutputOffset = Builder.add(Entry);
> >> if (shouldTailMerge())
> >> OutputOffset = -1;
> >> - S->Offsets.push_back(std::make_pair(Offset, OutputOffset));
> >> - uintX_t Size = End + EntSize;
> >> - Data = Data.substr(Size);
> >> - Offset += Size;
> >> + P.second = OutputOffset;
> >> }
> >> return;
> >> }
> >>
> >> // If this is not of type string, every entry has the same size.
> >> - for (unsigned I = 0, N = Data.size(); I != N; I += EntSize) {
> >> - StringRef Entry = Data.substr(I, EntSize);
> >> - size_t OutputOffset = Builder.add(Entry);
> >> - S->Offsets.push_back(std::make_pair(I, OutputOffset));
> >> + for (auto &P : Offsets) {
> >> + if (P.second == (uintX_t)-1)
> >> + continue;
> >> + StringRef Entry = Data.substr(P.first, EntSize);
> >> + P.second = Builder.add(Entry);
> >> }
> >> }
> >>
> >>
> >> Added: lld/trunk/test/ELF/gc-sections-merge-addend.s
> >> URL:
> >>
> http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/gc-sections-merge-addend.s?rev=267164&view=auto
> >>
> >>
> ==============================================================================
> >> --- lld/trunk/test/ELF/gc-sections-merge-addend.s (added)
> >> +++ lld/trunk/test/ELF/gc-sections-merge-addend.s Fri Apr 22 11:46:08
> 2016
> >> @@ -0,0 +1,39 @@
> >> +// RUN: llvm-mc %s -o %t.o -filetype=obj -triple=x86_64-pc-linux
> >> +// RUN: ld.lld %t.o -o %t.so -shared --gc-sections
> >> +// RUN: llvm-readobj -s -section-data %t.so | FileCheck %s
> >> +
> >> +
> >> +// CHECK: Name: .rodata
> >> +// CHECK-NEXT: Type: SHT_PROGBITS
> >> +// CHECK-NEXT: Flags [
> >> +// CHECK-NEXT: SHF_ALLOC
> >> +// CHECK-NEXT: SHF_MERGE
> >> +// CHECK-NEXT: SHF_STRINGS
> >> +// CHECK-NEXT: ]
> >> +// CHECK-NEXT: Address:
> >> +// CHECK-NEXT: Offset:
> >> +// CHECK-NEXT: Size: 4
> >> +// CHECK-NEXT: Link: 0
> >> +// CHECK-NEXT: Info: 0
> >> +// CHECK-NEXT: AddressAlignment: 1
> >> +// CHECK-NEXT: EntrySize: 1
> >> +// CHECK-NEXT: SectionData (
> >> +// CHECK-NEXT: 0000: 62617200 |bar.|
> >> +// CHECK-NEXT: )
> >> +
> >> + .section .data.f,"aw", at progbits
> >> + .globl f
> >> +f:
> >> + .quad .rodata.str1.1 + 4
> >> +
> >> + .section .data.g,"aw", at progbits
> >> + .hidden g
> >> + .globl g
> >> +g:
> >> + .quad .rodata.str1.1
> >> +
> >> + .section .rodata.str1.1,"aMS", at progbits,1
> >> +.L.str:
> >> + .asciz "foo"
> >> +.L.str.1:
> >> + .asciz "bar"
> >>
> >> Added: lld/trunk/test/ELF/gc-sections-merge-implicit-addend.s
> >> URL:
> >>
> http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/gc-sections-merge-implicit-addend.s?rev=267164&view=auto
> >>
> >>
> ==============================================================================
> >> --- lld/trunk/test/ELF/gc-sections-merge-implicit-addend.s (added)
> >> +++ lld/trunk/test/ELF/gc-sections-merge-implicit-addend.s Fri Apr 22
> >> 11:46:08 2016
> >> @@ -0,0 +1,39 @@
> >> +// RUN: llvm-mc %s -o %t.o -filetype=obj -triple=i386-pc-linux
> >> +// RUN: ld.lld %t.o -o %t.so -shared --gc-sections
> >> +// RUN: llvm-readobj -s -section-data %t.so | FileCheck %s
> >> +
> >> +
> >> +// CHECK: Name: .rodata
> >> +// CHECK-NEXT: Type: SHT_PROGBITS
> >> +// CHECK-NEXT: Flags [
> >> +// CHECK-NEXT: SHF_ALLOC
> >> +// CHECK-NEXT: SHF_MERGE
> >> +// CHECK-NEXT: SHF_STRINGS
> >> +// CHECK-NEXT: ]
> >> +// CHECK-NEXT: Address:
> >> +// CHECK-NEXT: Offset:
> >> +// CHECK-NEXT: Size: 4
> >> +// CHECK-NEXT: Link: 0
> >> +// CHECK-NEXT: Info: 0
> >> +// CHECK-NEXT: AddressAlignment: 1
> >> +// CHECK-NEXT: EntrySize: 1
> >> +// CHECK-NEXT: SectionData (
> >> +// CHECK-NEXT: 0000: 62617200 |bar.|
> >> +// CHECK-NEXT: )
> >> +
> >> + .section .data.f,"aw", at progbits
> >> + .globl f
> >> +f:
> >> + .long .rodata.str1.1 + 4
> >> +
> >> + .section .data.g,"aw", at progbits
> >> + .hidden g
> >> + .globl g
> >> +g:
> >> + .long .rodata.str1.1
> >> +
> >> + .section .rodata.str1.1,"aMS", at progbits,1
> >> +.L.str:
> >> + .asciz "foo"
> >> +.L.str.1:
> >> + .asciz "bar"
> >>
> >> Added: lld/trunk/test/ELF/gc-sections-merge.s
> >> URL:
> >>
> http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/gc-sections-merge.s?rev=267164&view=auto
> >>
> >>
> ==============================================================================
> >> --- lld/trunk/test/ELF/gc-sections-merge.s (added)
> >> +++ lld/trunk/test/ELF/gc-sections-merge.s Fri Apr 22 11:46:08 2016
> >> @@ -0,0 +1,61 @@
> >> +// RUN: llvm-mc %s -o %t.o -filetype=obj -triple=x86_64-pc-linux
> >> +// RUN: ld.lld %t.o -o %t.so -shared
> >> +// RUN: ld.lld %t.o -o %t.gc.so -shared --gc-sections
> >> +// RUN: llvm-readobj -s -section-data %t.so | FileCheck %s
> >> +// RUN: llvm-readobj -s -section-data %t.gc.so | FileCheck
> >> --check-prefix=GC %s
> >> +
> >> +
> >> +// CHECK: Name: .rodata
> >> +// CHECK-NEXT: Type: SHT_PROGBITS
> >> +// CHECK-NEXT: Flags [
> >> +// CHECK-NEXT: SHF_ALLOC
> >> +// CHECK-NEXT: SHF_MERGE
> >> +// CHECK-NEXT: SHF_STRINGS
> >> +// CHECK-NEXT: ]
> >> +// CHECK-NEXT: Address:
> >> +// CHECK-NEXT: Offset:
> >> +// CHECK-NEXT: Size: 8
> >> +// CHECK-NEXT: Link: 0
> >> +// CHECK-NEXT: Info: 0
> >> +// CHECK-NEXT: AddressAlignment: 1
> >> +// CHECK-NEXT: EntrySize: 1
> >> +// CHECK-NEXT: SectionData (
> >> +// CHECK-NEXT: 0000: 666F6F00 62617200 |foo.bar.|
> >> +// CHECK-NEXT: )
> >> +
> >> +// GC: Name: .rodata
> >> +// GC-NEXT: Type: SHT_PROGBITS
> >> +// GC-NEXT: Flags [
> >> +// GC-NEXT: SHF_ALLOC
> >> +// GC-NEXT: SHF_MERGE
> >> +// GC-NEXT: SHF_STRINGS
> >> +// GC-NEXT: ]
> >> +// GC-NEXT: Address:
> >> +// GC-NEXT: Offset:
> >> +// GC-NEXT: Size: 4
> >> +// GC-NEXT: Link: 0
> >> +// GC-NEXT: Info: 0
> >> +// GC-NEXT: AddressAlignment: 1
> >> +// GC-NEXT: EntrySize: 1
> >> +// GC-NEXT: SectionData (
> >> +// GC-NEXT: 0000: 666F6F00 |foo.|
> >> +// GC-NEXT: )
> >> +
> >> + .section .text.f,"ax", at progbits
> >> + .globl f
> >> +f:
> >> + leaq .L.str(%rip), %rax
> >> + retq
> >> +
> >> + .section .text.g,"ax", at progbits
> >> + .hidden g
> >> + .globl g
> >> +g:
> >> + leaq .L.str.1(%rip), %rax
> >> + retq
> >> +
> >> + .section .rodata.str1.1,"aMS", at progbits,1
> >> +.L.str:
> >> + .asciz "foo"
> >> +.L.str.1:
> >> + .asciz "bar"
> >>
> >>
> >> _______________________________________________
> >> llvm-commits mailing list
> >> llvm-commits at lists.llvm.org
> >> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
> >
> >
> >
> >
> > --
> > --
> > Peter
>
--
--
Peter
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