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Introducing the "linker_weak" linkage type. This will be used for Objective-C

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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
This commit is contained in:
Bill Wendling
2010-06-29 21:24:00 +00:00
parent 147b7cad2f
commit 207855cff9
26 changed files with 94 additions and 39 deletions
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1
lib/AsmParser/LLLexer.cpp
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@ -492,6 +492,7 @@ lltok::Kind LLLexer::LexIdentifier() {
KEYWORD(private);
KEYWORD(linker_private);
KEYWORD(linker_weak);
KEYWORD(internal);
KEYWORD(available_externally);
KEYWORD(linkonce);