Handle perfect shuffle case that generates a vrev for vectors of floats.
Add test case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131582 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 94f220b..802c999 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -4184,7 +4184,8 @@
   default: llvm_unreachable("Unknown shuffle opcode!");
   case OP_VREV:
     // VREV divides the vector in half and swaps within the half.
-    if (VT.getVectorElementType() == MVT::i32)
+    if (VT.getVectorElementType() == MVT::i32 ||
+        VT.getVectorElementType() == MVT::f32)
       return DAG.getNode(ARMISD::VREV64, dl, VT, OpLHS);
     // vrev <4 x i16> -> VREV32
     if (VT.getVectorElementType() == MVT::i16)