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| author | Dimitry Andric <dim@FreeBSD.org> | 2015-01-31 19:27:28 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2015-01-31 19:27:28 +0000 |
| commit | ec304151b74f9254d7029ee4d197ce1f7cbe501a (patch) | |
| tree | 63e4ed55e4fbb581fd4731d44a327a7b3278e0a1 /lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp | |
| parent | 67c32a98315f785a9ec9d531c1f571a0196c7463 (diff) | |
| download | src-ec304151b74f9254d7029ee4d197ce1f7cbe501a.tar.gz src-ec304151b74f9254d7029ee4d197ce1f7cbe501a.zip | |
Vendor import of llvm RELEASE_360/rc2 tag r227651 (effectively, 3.6.0 RC2):vendor/llvm/llvm-release_360-r227651
Notes
Notes:
svn path=/vendor/llvm/dist/; revision=277992
svn path=/vendor/llvm/llvm-release_360-r227651/; revision=277993; tag=vendor/llvm/llvm-release_360-r227651
Diffstat (limited to 'lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp')
| -rw-r--r-- | lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp b/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp index 423da6500c48..27cbac9f12e2 100644 --- a/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp +++ b/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp @@ -317,6 +317,42 @@ public: MachO::CPU_SUBTYPE_ARM64_ALL); } + bool doesSectionRequireSymbols(const MCSection &Section) const override { + // Any section for which the linker breaks things into atoms needs to + // preserve symbols, including assembler local symbols, to identify + // those atoms. These sections are: + // Sections of type: + // + // S_CSTRING_LITERALS (e.g. __cstring) + // S_LITERAL_POINTERS (e.g. objc selector pointers) + // S_16BYTE_LITERALS, S_8BYTE_LITERALS, S_4BYTE_LITERALS + // + // Sections named: + // + // __TEXT,__eh_frame + // __TEXT,__ustring + // __DATA,__cfstring + // __DATA,__objc_classrefs + // __DATA,__objc_catlist + // + // FIXME: It would be better if the compiler used actual linker local + // symbols for each of these sections rather than preserving what + // are ostensibly assembler local symbols. + const MCSectionMachO &SMO = static_cast<const MCSectionMachO &>(Section); + return (SMO.getType() == MachO::S_CSTRING_LITERALS || + SMO.getType() == MachO::S_4BYTE_LITERALS || + SMO.getType() == MachO::S_8BYTE_LITERALS || + SMO.getType() == MachO::S_16BYTE_LITERALS || + SMO.getType() == MachO::S_LITERAL_POINTERS || + (SMO.getSegmentName() == "__TEXT" && + (SMO.getSectionName() == "__eh_frame" || + SMO.getSectionName() == "__ustring")) || + (SMO.getSegmentName() == "__DATA" && + (SMO.getSectionName() == "__cfstring" || + SMO.getSectionName() == "__objc_classrefs" || + SMO.getSectionName() == "__objc_catlist"))); + } + /// \brief Generate the compact unwind encoding from the CFI directives. uint32_t generateCompactUnwindEncoding( ArrayRef<MCCFIInstruction> Instrs) const override { |