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Use instruction itinerary to determine what instructions are 'cheap'.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117348 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2010-10-26 02:08:50 +00:00
parent 0e9996ca94
commit c8141dfc7f
5 changed files with 69 additions and 4 deletions
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2
lib/Target/ARM/ARMBaseInstrInfo.h
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@@ -382,6 +382,8 @@ private:
const MachineRegisterInfo *MRI,
const MachineInstr *DefMI, unsigned DefIdx,
const MachineInstr *UseMI, unsigned UseIdx) const;
bool hasLowDefLatency(const InstrItineraryData *ItinData,
const MachineInstr *DefMI, unsigned DefIdx) const;
};
static inline