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rargextop0
2013 Oct 03
2
[LLVMdev] Question about DAGCombiner::MatchRotate function
...ctionDAG/DAGCombiner.cpp
===================================================================
--- lib/CodeGen/SelectionDAG/DAGCombiner.cpp (revision 191902)
+++ lib/CodeGen/SelectionDAG/DAGCombiner.cpp (working copy)
@@ -3415,12 +3415,16 @@
// (*ext (rotr x, (sub 32, y)))
SDValue LArgExtOp0 = LHSShiftArg.getOperand(0);
EVT LArgVT = LArgExtOp0.getValueType();
- if (LArgVT.getSizeInBits() == SUBC->getAPIntValue()) {
- SDValue V =
- DAG.getNode(HasROTL ? ISD::ROTL : ISD::ROTR, DL, LArgVT,
- LArgExtOp0, HasROTL ? LHSShiftAm...