[PATCH] D19391: transform masking off of an FP sign bit into a fabs...but only if it's legal!

[Simon Pilgrim via llvm-commits]

RKSimon added a subscriber: RKSimon.

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Comment at: lib/CodeGen/SelectionDAG/DAGCombiner.cpp:7344
@@ +7343,3 @@
+    SDValue AndOp0 = N0->getOperand(0);
+    ConstantSDNode *AndOp1 = dyn_cast<ConstantSDNode>(N0->getOperand(1));
+    if (AndOp1 && AndOp1->getAPIntValue().isMaxSignedValue() &&
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Can isConstOrConstSplat be used here to allow this combine to work on vectors as well?


http://reviews.llvm.org/D19391