From 207855cff9b4811004b9720f28a5bd0adf3784b7 Mon Sep 17 00:00:00 2001 From: Bill Wendling Date: Tue, 29 Jun 2010 21:24:00 +0000 Subject: 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 --- lib/CodeGen/MachineFunction.cpp | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'lib/CodeGen/MachineFunction.cpp') diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp index a38c881982..c84c31ec10 100644 --- a/lib/CodeGen/MachineFunction.cpp +++ b/lib/CodeGen/MachineFunction.cpp @@ -410,17 +410,18 @@ unsigned MachineFunction::addLiveIn(unsigned PReg, } /// getJTISymbol - Return the MCSymbol for the specified non-empty jump table. -/// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a -/// normal 'L' label is returned. -MCSymbol *MachineFunction::getJTISymbol(unsigned JTI, MCContext &Ctx, - bool isLinkerPrivate) const { +/// If isLinkerPrivate or isLinkerWeak is specified, an 'l' label is returned, +/// otherwise a normal 'L' label is returned. +MCSymbol *MachineFunction::getJTISymbol(unsigned JTI, MCContext &Ctx, + bool PassToLinker) const { assert(JumpTableInfo && "No jump tables"); assert(JTI < JumpTableInfo->getJumpTables().size() && "Invalid JTI!"); const MCAsmInfo &MAI = *getTarget().getMCAsmInfo(); - const char *Prefix = isLinkerPrivate ? MAI.getLinkerPrivateGlobalPrefix() : - MAI.getPrivateGlobalPrefix(); + const char *Prefix = PassToLinker ? + MAI.getLinkerPrivateGlobalPrefix() : + MAI.getPrivateGlobalPrefix(); SmallString<60> Name; raw_svector_ostream(Name) << Prefix << "JTI" << getFunctionNumber() << '_' << JTI; -- cgit v1.2.3-18-g5258