Fix a ppc long double regression I introduced yesterday due to a
simplification. This fixes automotive-basicmath on PPC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46072 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 67da854..34825be 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1753,6 +1753,7 @@
case ISD::FP_EXTEND:
assert(MVT::isFloatingPoint(VT) &&
MVT::isFloatingPoint(Operand.getValueType()) && "Invalid FP cast!");
+ if (Operand.getValueType() == VT) return Operand; // noop conversion.
break;
case ISD::SIGN_EXTEND:
assert(MVT::isInteger(VT) && MVT::isInteger(Operand.getValueType()) &&