From 17eff10f6806bbf676fc0c4731c9940c61d90cc0 Mon Sep 17 00:00:00 2001 From: Peter Collingbourne Date: Sat, 4 Jul 2015 03:42:35 +0000 Subject: [PATCH] LTO: expose LTO_SYMBOL_ALIAS, which indicates that the symbol is an alias. This is needed for COFF linkers to distinguish between weak external aliases and regular symbols with LLVM weak linkage, which are represented as strong symbols in COFF. llvm-svn: 241389 --- llvm/include/llvm-c/lto.h | 5 +++-- llvm/lib/LTO/LTOModule.cpp | 3 +++ 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/llvm/include/llvm-c/lto.h b/llvm/include/llvm-c/lto.h index 42c05a2fc59e..cb3a69160454 100644 --- a/llvm/include/llvm-c/lto.h +++ b/llvm/include/llvm-c/lto.h @@ -40,7 +40,7 @@ typedef bool lto_bool_t; * @{ */ -#define LTO_API_VERSION 16 +#define LTO_API_VERSION 17 /** * \since prior to LTO_API_VERSION=3 @@ -63,7 +63,8 @@ typedef enum { LTO_SYMBOL_SCOPE_PROTECTED = 0x00002000, LTO_SYMBOL_SCOPE_DEFAULT = 0x00001800, LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN = 0x00002800, - LTO_SYMBOL_COMDAT = 0x00004000 + LTO_SYMBOL_COMDAT = 0x00004000, + LTO_SYMBOL_ALIAS = 0x00008000 } lto_symbol_attributes; /** diff --git a/llvm/lib/LTO/LTOModule.cpp b/llvm/lib/LTO/LTOModule.cpp index 6131c3180249..53ed4175f8e3 100644 --- a/llvm/lib/LTO/LTOModule.cpp +++ b/llvm/lib/LTO/LTOModule.cpp @@ -473,6 +473,9 @@ void LTOModule::addDefinedSymbol(const char *Name, const GlobalValue *def, if (def->hasComdat()) attr |= LTO_SYMBOL_COMDAT; + if (isa(def)) + attr |= LTO_SYMBOL_ALIAS; + auto Iter = _defines.insert(Name).first; // fill information structure