[llvm] r244859 - [CodeGen] Assert on getNode(FP_EXTEND) with a smaller dst type.

[Ahmed Bougacha via llvm-commits]

Author: ab
Date: Wed Aug 12 20:10:29 2015
New Revision: 244859

URL: http://llvm.org/viewvc/llvm-project?rev=244859&view=rev
Log:
[CodeGen] Assert on getNode(FP_EXTEND) with a smaller dst type.

This would have caught the problem in r244858.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=244859&r1=244858&r2=244859&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Wed Aug 12 20:10:29 2015
@@ -3010,6 +3010,8 @@ SDValue SelectionDAG::getNode(unsigned O
             VT.getVectorNumElements() ==
             Operand.getValueType().getVectorNumElements()) &&
            "Vector element count mismatch!");
+    assert(Operand.getValueType().bitsLT(VT) &&
+           "Invalid fpext node, dst < src!");
     if (Operand.getOpcode() == ISD::UNDEF)
       return getUNDEF(VT);
     break;