Fix f80 UNDEF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42359 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index a903011d85826a9b2ceaf3b0ddcf4773d4d14308..b5c160a1a77df1af00de132e302b01b554f3b198 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -893,7 +893,8 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
       if (MVT::isInteger(VT))
         Result = DAG.getConstant(0, VT);
       else if (MVT::isFloatingPoint(VT))
-        Result = DAG.getConstantFP(0, VT);
+        Result = DAG.getConstantFP(APFloat(APInt(MVT::getSizeInBits(VT), 0)),
+                                   VT);
       else
         assert(0 && "Unknown value type!");
       break;