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| author | Bill Wendling <isanbard@gmail.com> | 2008-08-31 01:13:31 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2008-08-31 01:13:31 +0000 |
| commit | 11284ea499c5f2f1ef81b162503e5b4928d152f7 (patch) | |
| tree | 344283da4284c4c6375dbc4d72fceac4ad1f765e /llvm/lib | |
| parent | 4822a7ac8ada327008a4792db36fb645b003d02f (diff) | |
| download | bcm5719-llvm-11284ea499c5f2f1ef81b162503e5b4928d152f7.tar.gz bcm5719-llvm-11284ea499c5f2f1ef81b162503e5b4928d152f7.zip | |
Another situation where ROTR is cheaper than ROTL.
llvm-svn: 55577
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 2521609f5b6..e414fdfa7ab 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2044,10 +2044,10 @@ SDNode *DAGCombiner::MatchRotate(SDValue LHS, SDValue RHS) { if (ConstantSDNode *SUBC = dyn_cast<ConstantSDNode>(LHSShiftAmt.getOperand(0))) { if (SUBC->getAPIntValue() == OpSizeInBits) { - if (HasROTL) - return DAG.getNode(ISD::ROTL, VT, LHSShiftArg, LHSShiftAmt).getNode(); - else + if (HasROTR) return DAG.getNode(ISD::ROTR, VT, LHSShiftArg, RHSShiftAmt).getNode(); + else + return DAG.getNode(ISD::ROTL, VT, LHSShiftArg, LHSShiftAmt).getNode(); } } } |
