[Bug target/52457] Wrong VSX code generation bug when compiled with -O1 -m32 -mcpu=power7

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52457

--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> 2012-03-02 
01:59:22 UTC ---
I'm bootstrapping the following patch which fixes the bug for me.

Index: gcc/config/rs6000/vsx.md
===================================================================
--- gcc/config/rs6000/vsx.md    (revision 184649)
+++ gcc/config/rs6000/vsx.md    (working copy)
@@ -1119,9 +1119,9 @@ (define_insn "vsx_set_<mode>"
   "VECTOR_MEM_VSX_P (<MODE>mode)"
 {
   if (INTVAL (operands[3]) == 0)
-    return \"xxpermdi %x0,%x1,%x2,1\";
+    return \"xxpermdi %x0,%x2,%x1,1\";
   else if (INTVAL (operands[3]) == 1)
-    return \"xxpermdi %x0,%x2,%x1,0\";
+    return \"xxpermdi %x0,%x1,%x2,0\";
   else
     gcc_unreachable ();
 }