[lld] r258104 - Delete addIgnoredStrong.

Rui Ueyama via llvm-commits llvm-commits at lists.llvm.org
Tue Jan 19 12:17:56 PST 2016


You want to rename IgnoredWeak -> Ignored since the counterpart has been
removed?

On Mon, Jan 18, 2016 at 4:05 PM, Rafael Espindola via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> Author: rafael
> Date: Mon Jan 18 18:05:54 2016
> New Revision: 258104
>
> URL: http://llvm.org/viewvc/llvm-project?rev=258104&view=rev
> Log:
> Delete addIgnoredStrong.
>
> It is not needed now that we resolve symbols is shared libraries
> correctly.
>
> Modified:
>     lld/trunk/ELF/Driver.cpp
>     lld/trunk/ELF/SymbolTable.cpp
>     lld/trunk/ELF/SymbolTable.h
>     lld/trunk/ELF/Symbols.cpp
>     lld/trunk/ELF/Symbols.h
>     lld/trunk/ELF/Writer.cpp
>
> Modified: lld/trunk/ELF/Driver.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Driver.cpp?rev=258104&r1=258103&r2=258104&view=diff
>
> ==============================================================================
> --- lld/trunk/ELF/Driver.cpp (original)
> +++ lld/trunk/ELF/Driver.cpp Mon Jan 18 18:05:54 2016
> @@ -308,7 +308,7 @@ template <class ELFT> void LinkerDriver:
>      // On MIPS O32 ABI, _gp_disp is a magic symbol designates offset
> between
>      // start of function and gp pointer into GOT. Use 'strong' variant of
>      // the addIgnored to prevent '_gp_disp' substitution.
> -    Config->MipsGpDisp = Symtab.addIgnoredStrong("_gp_disp");
> +    Config->MipsGpDisp = Symtab.addIgnored("_gp_disp");
>
>      // Define _gp for MIPS. st_value of _gp symbol will be updated by
> Writer
>      // so that it points to an absolute address which is relative to GOT.
>
> Modified: lld/trunk/ELF/SymbolTable.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/SymbolTable.cpp?rev=258104&r1=258103&r2=258104&view=diff
>
> ==============================================================================
> --- lld/trunk/ELF/SymbolTable.cpp (original)
> +++ lld/trunk/ELF/SymbolTable.cpp Mon Jan 18 18:05:54 2016
> @@ -123,13 +123,6 @@ SymbolBody *SymbolTable<ELFT>::addIgnore
>    return addAbsolute(Name, ElfSym<ELFT>::IgnoredWeak);
>  }
>
> -// The 'strong' variant of the addIgnored. Adds symbol which has a global
> -// binding and cannot be substituted.
> -template <class ELFT>
> -SymbolBody *SymbolTable<ELFT>::addIgnoredStrong(StringRef Name) {
> -  return addAbsolute(Name, ElfSym<ELFT>::Ignored);
> -}
> -
>  // Rename SYM as __wrap_SYM. The original symbol is preserved as
> __real_SYM.
>  // Used to implement --wrap.
>  template <class ELFT> void SymbolTable<ELFT>::wrap(StringRef Name) {
>
> Modified: lld/trunk/ELF/SymbolTable.h
> URL:
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/SymbolTable.h?rev=258104&r1=258103&r2=258104&view=diff
>
> ==============================================================================
> --- lld/trunk/ELF/SymbolTable.h (original)
> +++ lld/trunk/ELF/SymbolTable.h Mon Jan 18 18:05:54 2016
> @@ -55,7 +55,6 @@ public:
>    SymbolBody *addSynthetic(StringRef Name, OutputSectionBase<ELFT>
> &Section,
>                             uintX_t Value);
>    SymbolBody *addIgnored(StringRef Name);
> -  SymbolBody *addIgnoredStrong(StringRef Name);
>
>    void scanShlibUndefined();
>    SymbolBody *find(StringRef Name);
>
> Modified: lld/trunk/ELF/Symbols.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Symbols.cpp?rev=258104&r1=258103&r2=258104&view=diff
>
> ==============================================================================
> --- lld/trunk/ELF/Symbols.cpp (original)
> +++ lld/trunk/ELF/Symbols.cpp Mon Jan 18 18:05:54 2016
> @@ -124,8 +124,6 @@ template <class ELFT> static void doInit
>    ElfSym<ELFT>::End.setBinding(STB_GLOBAL);
>    ElfSym<ELFT>::IgnoredWeak.setBinding(STB_WEAK);
>    ElfSym<ELFT>::IgnoredWeak.setVisibility(STV_HIDDEN);
> -  ElfSym<ELFT>::Ignored.setBinding(STB_GLOBAL);
> -  ElfSym<ELFT>::Ignored.setVisibility(STV_HIDDEN);
>  }
>
>  void elf2::initSymbols() {
>
> Modified: lld/trunk/ELF/Symbols.h
> URL:
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Symbols.h?rev=258104&r1=258103&r2=258104&view=diff
>
> ==============================================================================
> --- lld/trunk/ELF/Symbols.h (original)
> +++ lld/trunk/ELF/Symbols.h Mon Jan 18 18:05:54 2016
> @@ -306,10 +306,8 @@ template <class ELFT> struct ElfSym {
>
>    // Used to represent an undefined symbol which we don't want
>    // to add to the output file's symbol table. The `IgnoredWeak`
> -  // has weak binding and can be substituted. The `Ignore` has
> -  // global binding and gets priority over symbols from shared libs.
> +  // has weak binding and can be substituted.
>    static Elf_Sym IgnoredWeak;
> -  static Elf_Sym Ignored;
>
>    // The content for _end and end symbols.
>    static Elf_Sym End;
> @@ -324,7 +322,6 @@ template <class ELFT> struct ElfSym {
>  };
>
>  template <class ELFT> typename ElfSym<ELFT>::Elf_Sym
> ElfSym<ELFT>::IgnoredWeak;
> -template <class ELFT> typename ElfSym<ELFT>::Elf_Sym
> ElfSym<ELFT>::Ignored;
>  template <class ELFT> typename ElfSym<ELFT>::Elf_Sym ElfSym<ELFT>::End;
>  template <class ELFT> typename ElfSym<ELFT>::Elf_Sym ElfSym<ELFT>::MipsGp;
>  template <class ELFT>
>
> Modified: lld/trunk/ELF/Writer.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Writer.cpp?rev=258104&r1=258103&r2=258104&view=diff
>
> ==============================================================================
> --- lld/trunk/ELF/Writer.cpp (original)
> +++ lld/trunk/ELF/Writer.cpp Mon Jan 18 18:05:54 2016
> @@ -613,8 +613,7 @@ template <class ELFT> static bool includ
>
>    // Don't include synthetic symbols like __init_array_start in every
> output.
>    if (auto *U = dyn_cast<DefinedRegular<ELFT>>(&B))
> -    if (&U->Sym == &ElfSym<ELFT>::IgnoredWeak ||
> -        &U->Sym == &ElfSym<ELFT>::Ignored)
> +    if (&U->Sym == &ElfSym<ELFT>::IgnoredWeak)
>        return false;
>
>    return true;
>
>
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