Remove unnecessary FP_EXTEND. This causes worse codegen for SSE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22469 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 05d84609a0f3a211f25220e19152daa6c1c78782..dae4ddd8cf183149e4df84953b0c84db34a44007 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -403,9 +403,6 @@ void SelectionDAGLowering::visitRet(ReturnInst &I) {
       Op1 = DAG.getNode(ISD::ZERO_EXTEND, TmpVT, Op1);
     break;
   case MVT::f32:
-    // Extend float to double.
-    Op1 = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Op1);
-    break;
   case MVT::i64:
   case MVT::f64:
     break; // No extension needed!