diff options
Diffstat (limited to 'lib/CodeGen')
-rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 1a0f503..53b4493 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -6658,6 +6658,11 @@ bool DAGCombiner::SimplifySelectOps(SDNode *TheSelect, SDValue LHS, LLD->isVolatile() || RLD->isVolatile() || // If this is an EXTLOAD, the VT's must match. LLD->getMemoryVT() != RLD->getMemoryVT() || + // If this is an EXTLOAD, the kind of extension must match. + (LLD->getExtensionType() != RLD->getExtensionType() && + // The only exception is if one of the extensions is anyext. + LLD->getExtensionType() != ISD::EXTLOAD && + RLD->getExtensionType() != ISD::EXTLOAD) || // FIXME: this discards src value information. This is // over-conservative. It would be beneficial to be able to remember // both potential memory locations. Since we are discarding |