[PATCH, i386, PR61827] Fix fuse-caller-save-xmm.c test-case

[Tom de Vries <Tom_deVries at mentor dot com>]

Uros,

this patch fixes the problems in test-case 
gcc.target/i386/fuse-caller-save-xmm.c reported in PR 61827. I've removed the 
checks for cfi_def_cfa_offset, which were not robust enough for the different 
configurations.

Furthermore, I've:
- added checks for all insns that handle the xmm registers, to make sure we're
  actually using the xmm1 register.
- fixed the scan-assembler-not lines to allow both %esp and %rsp.
- removed main, which was really only intended for the
  fuse-caller-save-xmm-run.c test-case.

Tested with -m32 and -m64.

OK for trunk?

Thanks,
- Tom

2014-07-20  Tom de Vries  <tom@codesourcery.com>

	PR target/61827
	* gcc.target/i386/fuse-caller-save-xmm.c: Add checks for insns with xmm
	registers.  Remove cfi_def_cfa_offset checks.  Generalize checks
	containing %rsp.
	(main): Remove.

diff --git a/gcc/testsuite/gcc.target/i386/fuse-caller-save-xmm.c b/gcc/testsuite/gcc.target/i386/fuse-caller-save-xmm.c
index ff21f0c..3754b01 100644
--- a/gcc/testsuite/gcc.target/i386/fuse-caller-save-xmm.c
+++ b/gcc/testsuite/gcc.target/i386/fuse-caller-save-xmm.c
@@ -15,23 +15,12 @@ foo (v2df y)
   return y + bar (y);
 }
 
-int
-main (void)
-{
-  int success;
-  union {
-    v2df v;
-    double d[2];
-  } u;
-
-  u.v = foo ((v2df){ 5.0, 5.0});
-  success = (u.d[0] == 13.0
-	     && u.d[1] == 13.0);
-
-  return !success;
-}
+/* Check presence of all insns on xmm registers.  These checks are expected to
+   pass with both -fuse-caller-save and -fno-use-caller-save.  */
+/* { dg-final { scan-assembler-times "addpd\t\\.LC0.*, %xmm0" 1 } } */
+/* { dg-final { scan-assembler-times "addpd\t%xmm1, %xmm0" 1 } } */
+/* { dg-final { scan-assembler-times "movapd\t%xmm0, %xmm1" 1 } } */
 
-/* { dg-final { scan-assembler-not "movaps\t%xmm1, \\(%rsp\\)" } } */
-/* { dg-final { scan-assembler-not "movapd\t\\(%rsp\\), %xmm1" } } */
-/* { dg-final { scan-assembler-times ".cfi_def_cfa_offset 16" 1 } } */
-/* { dg-final { scan-assembler-times ".cfi_def_cfa_offset 32" 1 } } */
+/* Check absence of save/restore of xmm1 register.  */
+/* { dg-final { scan-assembler-not "movaps\t%xmm1, \\(%.sp\\)" } } */
+/* { dg-final { scan-assembler-not "movapd\t\\(%.sp\\), %xmm1" } } */