From ba2f4c3884d999904143e755ffa0f05ca2b532c4 Mon Sep 17 00:00:00 2001 From: Daniel Dunbar Date: Wed, 12 May 2010 00:38:17 +0000 Subject: MC/Mach-O/x86_64: Add a new hook for checking whether a particular section can be diced into atoms, and adjust getAtom() to take this into account. - This fixes relocations to symbols in fixed size literal sections, for example. llvm-svn: 103532 --- llvm/lib/Target/X86/X86AsmBackend.cpp | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'llvm/lib/Target') diff --git a/llvm/lib/Target/X86/X86AsmBackend.cpp b/llvm/lib/Target/X86/X86AsmBackend.cpp index b72601ae586..8ee836e1c61 100644 --- a/llvm/lib/Target/X86/X86AsmBackend.cpp +++ b/llvm/lib/Target/X86/X86AsmBackend.cpp @@ -259,6 +259,26 @@ public: const MCSectionMachO &SMO = static_cast(Section); return SMO.getType() == MCSectionMachO::S_CSTRING_LITERALS; } + + virtual bool isSectionAtomizable(const MCSection &Section) const { + const MCSectionMachO &SMO = static_cast(Section); + // Fixed sized data sections are uniqued, they cannot be diced into atoms. + switch (SMO.getType()) { + default: + return true; + + case MCSectionMachO::S_4BYTE_LITERALS: + case MCSectionMachO::S_8BYTE_LITERALS: + case MCSectionMachO::S_16BYTE_LITERALS: + case MCSectionMachO::S_LITERAL_POINTERS: + case MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS: + case MCSectionMachO::S_LAZY_SYMBOL_POINTERS: + case MCSectionMachO::S_MOD_INIT_FUNC_POINTERS: + case MCSectionMachO::S_MOD_TERM_FUNC_POINTERS: + case MCSectionMachO::S_INTERPOSING: + return false; + } + } }; } -- cgit v1.2.3