return S;
}
+bool TargetLoweringObjectFileMachO::isSectionAtomizableBySymbols(
+ const MCSection &Section) const {
+ const MCSectionMachO &SMO = static_cast<const MCSectionMachO&>(Section);
+
+ // Sections holding 1 byte strings are atomized based on the data
+ // they contain.
+ // Sections holding 2 byte strings require symbols in order to be
+ // atomized.
+ // There is no dedicated section for 4 byte strings.
+ if (SMO.getKind().isMergeable1ByteCString())
+ return false;
+
+ if (SMO.getSegmentName() == "__TEXT" &&
+ SMO.getSectionName() == "__objc_classname" &&
+ SMO.getType() == MachO::S_CSTRING_LITERALS)
+ return false;
+
+ if (SMO.getSegmentName() == "__TEXT" &&
+ SMO.getSectionName() == "__objc_methname" &&
+ SMO.getType() == MachO::S_CSTRING_LITERALS)
+ return false;
+
+ if (SMO.getSegmentName() == "__TEXT" &&
+ SMO.getSectionName() == "__objc_methtype" &&
+ SMO.getType() == MachO::S_CSTRING_LITERALS)
+ return false;
+
+ if (SMO.getSegmentName() == "__DATA" &&
+ SMO.getSectionName() == "__cfstring")
+ return false;
+
+ // no_dead_strip sections are not atomized in practice.
+ if (SMO.hasAttribute(MachO::S_ATTR_NO_DEAD_STRIP))
+ return false;
+
+ switch (SMO.getType()) {
+ default:
+ return true;
+
+ // These sections are atomized at the element boundaries without using
+ // symbols.
+ case MachO::S_4BYTE_LITERALS:
+ case MachO::S_8BYTE_LITERALS:
+ case MachO::S_16BYTE_LITERALS:
+ case MachO::S_LITERAL_POINTERS:
+ case MachO::S_NON_LAZY_SYMBOL_POINTERS:
+ case MachO::S_LAZY_SYMBOL_POINTERS:
+ case MachO::S_MOD_INIT_FUNC_POINTERS:
+ case MachO::S_MOD_TERM_FUNC_POINTERS:
+ case MachO::S_INTERPOSING:
+ return false;
+ }
+}
+
const MCSection *TargetLoweringObjectFileMachO::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler &Mang, const TargetMachine &TM) const {