re PR target/35907 (64-bit power6 glibc miscompilation)

	PR target/35907
	* gcc.target/powerpc/pr35907.c: New test.

Co-Authored-By: Peter Bergner <bergner@vnet.ibm.com>

From-SVN: r134447

gcc/testsuite/ChangeLog

+2008-04-18  Jakub Jelinek  <jakub@redhat.com>
+	    Peter Bergner  <bergner@vnet.ibm.com>
+
+	PR target/35907
+	* gcc.target/powerpc/pr35907.c: New test.
+
 2008-04-18  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gnat.dg/dynamic_elab_pkg.ads: New helper.

gcc/testsuite/gcc.target/powerpc/pr35907.c

+/* PR target/35907 */
+/* { dg-do run { target powerpc*-*-* } } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-O2 -maltivec" } */
+
+#include "altivec_check.h"
+
+#define vector __attribute__((vector_size (16)))
+union
+{
+  vector int k;
+  int c[16];
+} u, v, w;
+vector int m;
+
+void __attribute__((noinline))
+bar (void *i, vector int j)
+{
+  asm volatile ("" : : "r" (i), "r" (&j) : "memory");
+}
+
+int __attribute__((noinline))
+foo (int i, vector int j)
+{
+  char *p = __builtin_alloca (64 + i);
+  m += u.k;
+  v.k = m;
+  w.k = j;
+  if (__builtin_memcmp (&v.c, &w.c, 16) != 0)
+    __builtin_abort ();
+  j += u.k;
+  bar (p, j);
+  j += u.k;
+  bar (p, j);
+  return 0;
+}
+
+void
+test (void)
+{
+  vector int l;
+  int i;
+  for (i = 0; i < 4; i++)
+    u.c[i] = i;
+  l = u.k;
+  if (foo (64, l))
+    __builtin_abort ();
+  l += u.k;
+  if (foo (64, l))
+    __builtin_abort ();
+}
+
+int
+main ()
+{
+  altivec_check ();
+  test ();
+  return 0;
+}