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| author | Daniel Dunbar <daniel@zuster.org> | 2010-06-23 17:09:26 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2010-06-23 17:09:26 +0000 |
| commit | cbe762b5d165c565feb98b745e93b71d208a1e36 (patch) | |
| tree | 0f6f0b75c5f50a24a09c41e4224b54fc1c4c0123 /lib/CodeGen/SelectionDAG/TargetLowering.cpp | |
| parent | f1ab49e83abccd9f7b885e74172419249bd5fd8a (diff) | |
| download | external_llvm-cbe762b5d165c565feb98b745e93b71d208a1e36.zip external_llvm-cbe762b5d165c565feb98b745e93b71d208a1e36.tar.gz external_llvm-cbe762b5d165c565feb98b745e93b71d208a1e36.tar.bz2 | |
Revert r106263, "Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass,"... it was causing both 'file' (with clang) and 176.gcc (with llvm-gcc) to be miscompiled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106634 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/TargetLowering.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/TargetLowering.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp index bfd689b..06f29b8 100644 --- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1075,7 +1075,7 @@ bool TargetLowering::SimplifyDemandedBits(SDValue Op, if (TLO.ShrinkDemandedConstant(Op, ~KnownZero2 & NewMask)) return true; // If the operation can be done in a smaller type, do so. - if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) + if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) return true; // Output known-1 bits are only known if set in both the LHS & RHS. @@ -1109,7 +1109,7 @@ bool TargetLowering::SimplifyDemandedBits(SDValue Op, if (TLO.ShrinkDemandedConstant(Op, NewMask)) return true; // If the operation can be done in a smaller type, do so. - if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) + if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) return true; // Output known-0 bits are only known if clear in both the LHS & RHS. @@ -1134,7 +1134,7 @@ bool TargetLowering::SimplifyDemandedBits(SDValue Op, if ((KnownZero2 & NewMask) == NewMask) return TLO.CombineTo(Op, Op.getOperand(1)); // If the operation can be done in a smaller type, do so. - if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) + if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) return true; // If all of the unknown bits are known to be zero on one side or the other @@ -1581,7 +1581,7 @@ bool TargetLowering::SimplifyDemandedBits(SDValue Op, KnownOne2, TLO, Depth+1)) return true; // See if the operation should be performed at a smaller bit width. - if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) + if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl)) return true; } // FALL THROUGH |