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| author | Bill Wendling <isanbard@gmail.com> | 2010-06-29 21:24:00 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2010-06-29 21:24:00 +0000 |
| commit | 207855cff9b4811004b9720f28a5bd0adf3784b7 (patch) | |
| tree | 341cb2f4392d2d0af87f4cd7b694a87333c47cc7 /lib/AsmParser | |
| parent | 147b7cad2fefa3260e2da8f7cfe31ac07f352ceb (diff) | |
| download | external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.zip external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.tar.gz external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.tar.bz2 | |
Introducing the "linker_weak" linkage type. This will be used for Objective-C
metadata types which should be marked as "weak", but which the linker will
remove upon final linkage. For example, the "objc_msgSend_fixup_alloc" symbol is
defined like this:
.globl l_objc_msgSend_fixup_alloc
.weak_definition l_objc_msgSend_fixup_alloc
.section __DATA, __objc_msgrefs, coalesced
.align 3
l_objc_msgSend_fixup_alloc:
.quad _objc_msgSend_fixup
.quad L_OBJC_METH_VAR_NAME_1
This is different from the "linker_private" linkage type, because it can't have
the metadata defined with ".weak_definition".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107205 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser')
| -rw-r--r-- | lib/AsmParser/LLLexer.cpp | 1 | ||||
| -rw-r--r-- | lib/AsmParser/LLParser.cpp | 7 | ||||
| -rw-r--r-- | lib/AsmParser/LLToken.h | 5 |
3 files changed, 10 insertions, 3 deletions
diff --git a/lib/AsmParser/LLLexer.cpp b/lib/AsmParser/LLLexer.cpp index 9b4370f..3e8414a 100644 --- a/lib/AsmParser/LLLexer.cpp +++ b/lib/AsmParser/LLLexer.cpp @@ -492,6 +492,7 @@ lltok::Kind LLLexer::LexIdentifier() { KEYWORD(private); KEYWORD(linker_private); + KEYWORD(linker_weak); KEYWORD(internal); KEYWORD(available_externally); KEYWORD(linkonce); diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp index 1cd66e5..9a9bd12 100644 --- a/lib/AsmParser/LLParser.cpp +++ b/lib/AsmParser/LLParser.cpp @@ -198,6 +198,7 @@ bool LLParser::ParseTopLevelEntities() { // OptionalAddrSpace ('constant'|'global') ... case lltok::kw_private : // OptionalLinkage case lltok::kw_linker_private: // OptionalLinkage + case lltok::kw_linker_weak: // OptionalLinkage case lltok::kw_internal: // OptionalLinkage case lltok::kw_weak: // OptionalLinkage case lltok::kw_weak_odr: // OptionalLinkage @@ -629,7 +630,8 @@ bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, Linkage != GlobalValue::WeakODRLinkage && Linkage != GlobalValue::InternalLinkage && Linkage != GlobalValue::PrivateLinkage && - Linkage != GlobalValue::LinkerPrivateLinkage) + Linkage != GlobalValue::LinkerPrivateLinkage && + Linkage != GlobalValue::LinkerWeakLinkage) return Error(LinkageLoc, "invalid linkage type for alias"); Constant *Aliasee; @@ -1013,6 +1015,7 @@ bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) { /// ::= /*empty*/ /// ::= 'private' /// ::= 'linker_private' +/// ::= 'linker_weak' /// ::= 'internal' /// ::= 'weak' /// ::= 'weak_odr' @@ -1030,6 +1033,7 @@ bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) { default: Res=GlobalValue::ExternalLinkage; return false; case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break; case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break; + case lltok::kw_linker_weak: Res = GlobalValue::LinkerWeakLinkage; break; case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break; case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break; case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break; @@ -2704,6 +2708,7 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) { break; case GlobalValue::PrivateLinkage: case GlobalValue::LinkerPrivateLinkage: + case GlobalValue::LinkerWeakLinkage: case GlobalValue::InternalLinkage: case GlobalValue::AvailableExternallyLinkage: case GlobalValue::LinkOnceAnyLinkage: diff --git a/lib/AsmParser/LLToken.h b/lib/AsmParser/LLToken.h index 5eed170..9430f5d 100644 --- a/lib/AsmParser/LLToken.h +++ b/lib/AsmParser/LLToken.h @@ -37,8 +37,9 @@ namespace lltok { kw_declare, kw_define, kw_global, kw_constant, - kw_private, kw_linker_private, kw_internal, kw_linkonce, kw_linkonce_odr, - kw_weak, kw_weak_odr, kw_appending, kw_dllimport, kw_dllexport, kw_common, + kw_private, kw_linker_private, kw_linker_weak, kw_internal, kw_linkonce, + kw_linkonce_odr, kw_weak, kw_weak_odr, kw_appending, kw_dllimport, + kw_dllexport, kw_common, kw_available_externally, kw_default, kw_hidden, kw_protected, kw_extern_weak, |