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| author | Dan Gohman <gohman@apple.com> | 2010-06-18 01:05:21 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-06-18 01:05:21 +0000 |
| commit | b92156d5e4e6ad86e945d51f8fbb0138db60e08a (patch) | |
| tree | 68b0f594963ff23da6745d0c69458551db6e6444 /llvm/lib/Target/X86 | |
| parent | 0136309f5aaf4fc0e11c20222ab4a3bfda1e5ec5 (diff) | |
| download | bcm5719-llvm-b92156d5e4e6ad86e945d51f8fbb0138db60e08a.tar.gz bcm5719-llvm-b92156d5e4e6ad86e945d51f8fbb0138db60e08a.zip | |
Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass,
which is faster, simpler, and less surprising.
llvm-svn: 106263
Diffstat (limited to 'llvm/lib/Target/X86')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 99070668329..f5e0b225dbb 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -9641,8 +9641,10 @@ static SDValue PerformOrCombine(SDNode *N, SelectionDAG &DAG, if (ShAmt1.getOpcode() == ISD::SUB) { SDValue Sum = ShAmt1.getOperand(0); if (ConstantSDNode *SumC = dyn_cast<ConstantSDNode>(Sum)) { - if (SumC->getSExtValue() == Bits && - ShAmt1.getOperand(1) == ShAmt0) + SDValue ShAmt1Op1 = ShAmt1.getOperand(1); + if (ShAmt1Op1.getNode()->getOpcode() == ISD::TRUNCATE) + ShAmt1Op1 = ShAmt1Op1.getOperand(0); + if (SumC->getSExtValue() == Bits && ShAmt1Op1 == ShAmt0) return DAG.getNode(Opc, DL, VT, Op0, Op1, DAG.getNode(ISD::TRUNCATE, DL, |
