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Diffstat (limited to 'lib/Transforms/InstCombine/InstCombine.h')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombine.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Transforms/InstCombine/InstCombine.h b/lib/Transforms/InstCombine/InstCombine.h index 90637a9d7b..ff5eeb6192 100644 --- a/lib/Transforms/InstCombine/InstCombine.h +++ b/lib/Transforms/InstCombine/InstCombine.h @@ -327,6 +327,11 @@ private: bool SimplifyDemandedBits(Use &U, APInt DemandedMask, APInt& KnownZero, APInt& KnownOne, unsigned Depth=0); + /// Helper routine of SimplifyDemandedUseBits. It tries to simplify demanded + /// bit for "r1 = shr x, c1; r2 = shl r1, c2" instruction sequence. + Value *SimplifyShrShlDemandedBits(Instruction *Lsr, Instruction *Sftl, + APInt DemandedMask, APInt &KnownZero, + APInt &KnownOne); /// SimplifyDemandedInstructionBits - Inst is an integer instruction that /// SimplifyDemandedBits knows about. See if the instruction has any |