Add support for targets that have a legal ISD::TRAP.

llvm-svn: 46014
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index ac2ce8a..cb12b7c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -175,6 +175,9 @@
     setOperationAction(ISD::FGETSIGN, (MVT::ValueType)VT, Expand);
   }
 
+  // Default ISD::TRAP to expand (which turns it into abort).
+  setOperationAction(ISD::TRAP, MVT::Other, Expand);
+    
   IsLittleEndian = TD->isLittleEndian();
   UsesGlobalOffsetTable = false;
   ShiftAmountTy = SetCCResultTy = PointerTy = getValueType(TD->getIntPtrType());