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LTO: expose LTO_SYMBOL_ALIAS, which indicates that the symbol is an alias.

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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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241389 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Peter Collingbourne 2015-07-04 03:42:35 +00:00
parent 392450ed6f
commit dfe478600b
2 changed files with 6 additions and 2 deletions
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5
include/llvm-c/lto.h
View File

@ -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;
/**

3
lib/LTO/LTOModule.cpp
View File

@ -473,6 +473,9 @@ void LTOModule::addDefinedSymbol(const char *Name, const GlobalValue *def,
if (def->hasComdat())
attr |= LTO_SYMBOL_COMDAT;
if (isa<GlobalAlias>(def))
attr |= LTO_SYMBOL_ALIAS;
auto Iter = _defines.insert(Name).first;
// fill information structure