Changes in directory llvm/lib/CodeGen/SelectionDAG:
DAGCombiner.cpp updated: 1.279 -> 1.280
---
Log message:
Make sure SEXTLOAD of the specific type is supported on the target.
---
Diffs of the changes: (+4 -0)
DAGCombiner.cpp | 4 ++++
1 files changed, 4 insertions(+)
Index: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.279
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.280
--- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.279 Fri Mar 23 15:55:21 2007
+++ llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Fri Mar 23 17:13:36 2007
@@ -2272,9 +2272,13 @@
MVT::ValueType VT = N->getValueType(0);
MVT::ValueType EVT = N->getValueType(0);
+ // Special case: SIGN_EXTEND_INREG is basically truncating to EVT then
+ // extended to VT.
if (Opc == ISD::SIGN_EXTEND_INREG) {
ExtType = ISD::SEXTLOAD;
EVT = cast<VTSDNode>(N->getOperand(1))->getVT();
+ if (AfterLegalize && !TLI.isLoadXLegal(ISD::SEXTLOAD, EVT))
+ return SDOperand();
}
unsigned EVTBits = MVT::getSizeInBits(EVT);
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