More soft fp fixes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49016 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 7812187..5cb13e3 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -5369,7 +5369,8 @@
   MVT::ValueType SourceVT = Source.getValueType();
   bool ExpandSource = getTypeAction(SourceVT) == Expand;
 
-  if (!isSigned) {
+  // Special case for i32 source to take advantage of UINTTOFP_I32_F32, etc.
+  if (!isSigned && SourceVT != MVT::i32) {
     // The integer value loaded will be incorrectly if the 'sign bit' of the
     // incoming integer is set.  To handle this, we dynamically test to see if
     // it is set, and, if so, add a fudge factor.