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| author | Logan Chien <loganchien@google.com> | 2011-12-16 09:08:45 +0800 |
|---|---|---|
| committer | Logan Chien <loganchien@google.com> | 2011-12-16 13:28:58 +0800 |
| commit | a1e6e241a813f81be2d2f36ab60c950ca297574b (patch) | |
| tree | cf2d7ec5c63f40e2b66d8be7737496719a0d7902 /lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp | |
| parent | ac212abcc6d858470ad35ce7d660af0c1800364a (diff) | |
| parent | ddecfe54a35ffbe0675f7f33e493734fd60b2495 (diff) | |
| download | external_llvm-a1e6e241a813f81be2d2f36ab60c950ca297574b.zip external_llvm-a1e6e241a813f81be2d2f36ab60c950ca297574b.tar.gz external_llvm-a1e6e241a813f81be2d2f36ab60c950ca297574b.tar.bz2 | |
Merge with LLVM upstream r146714 (Dec 16th 2011)
Change-Id: Ied458adb08bf9a69250cbcee9b14b44d17e8701a
Diffstat (limited to 'lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp')
| -rw-r--r-- | lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp b/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp index 69ad7d7..87b2b05 100644 --- a/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp +++ b/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp @@ -107,6 +107,11 @@ public: bool MayNeedRelaxation(const MCInst &Inst) const; + bool fixupNeedsRelaxation(const MCFixup &Fixup, + uint64_t Value, + const MCInstFragment *DF, + const MCAsmLayout &Layout) const; + void RelaxInstruction(const MCInst &Inst, MCInst &Res) const; bool WriteNopData(uint64_t Count, MCObjectWriter *OW) const; @@ -244,6 +249,14 @@ bool X86AsmBackend::MayNeedRelaxation(const MCInst &Inst) const { return hasExp && !hasRIP; } +bool X86AsmBackend::fixupNeedsRelaxation(const MCFixup &Fixup, + uint64_t Value, + const MCInstFragment *DF, + const MCAsmLayout &Layout) const { + // Relax if the value is too big for a (signed) i8. + return int64_t(Value) != int64_t(int8_t(Value)); +} + // FIXME: Can tblgen help at all here to verify there aren't other instructions // we can relax? void X86AsmBackend::RelaxInstruction(const MCInst &Inst, MCInst &Res) const { |