obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 39 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/asm-b.c b/gcc/testsuite/gcc.dg/asm-b.c
new file mode 100644
index 000000000..f888839ab
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/asm-b.c
@@ -0,0 +1,39 @@
+/* { dg-do run  { target powerpc*-*-* i?86-*-* x86_64-*-* } } */
+/* { dg-options "-O1" } */
+/* Test to make sure that inline-asm causes the tree optimizers to get the
+   V_MAY_DEFs and clobber memory.  */
+/* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets.  */
+extern void abort (void);
+
+unsigned short v = 0x0300;
+
+void
+foo (unsigned short *p)
+{
+  *p = v;
+}
+
+int
+bar (void)
+{
+  unsigned short x;
+  volatile unsigned short *z;
+  foo (&x);
+  const unsigned int y = x;
+  z = &x;
+#if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER) || defined (__ppc64__) || defined (__ppc)
+  __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z));
+#elif defined __i386__ || defined __x86_64__
+  __asm __volatile ("movb %b1,1(%2)\n\tmovb %h1,(%2)"
+		    : "=m" (*z) : "Q" (y), "R" (z));
+#endif
+  return (x & 1) == 0;
+}
+
+int
+main (void)
+{
+  if (bar ())
+    abort ();
+  return 0;
+}