diff options
Diffstat (limited to 'include/llvm/Target/TargetLowering.h')
| -rw-r--r-- | include/llvm/Target/TargetLowering.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h index c1d0b32f7d75..994480ebc90e 100644 --- a/include/llvm/Target/TargetLowering.h +++ b/include/llvm/Target/TargetLowering.h @@ -2678,6 +2678,15 @@ public: const SelectionDAG &DAG, unsigned Depth = 0) const; + /// Determine which of the bits of FrameIndex \p FIOp are known to be 0. + /// Default implementation computes low bits based on alignment + /// information. This should preserve known bits passed into it. + virtual void computeKnownBitsForFrameIndex(const SDValue FIOp, + KnownBits &Known, + const APInt &DemandedElts, + const SelectionDAG &DAG, + unsigned Depth = 0) const; + /// This method can be implemented by targets that want to expose additional /// information about sign bits to the DAG Combiner. The DemandedElts /// argument allows us to only collect the minimum sign bits that are shared |