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, 42 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/builtin-apply-mmx.c b/gcc/testsuite/gcc.target/i386/builtin-apply-mmx.c
new file mode 100644
index 000000000..f6477e264
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/builtin-apply-mmx.c
@@ -0,0 +1,42 @@
+/* __builtin_apply_args () and __builtin_return () built-in functions does
+   not function properly when -mmmx is used in compile flags.
+   __builtin_apply_args () saves all registers that pass arguments to a
+   function, including %mm0-%mm3, to a memory block, and __builtin_return ()
+   restores %mm0, from a return memory block, as it can be used as a
+   function return register.  Unfortunatelly, when MMX registers are touched,
+   i387 FPU switches to MMX mode, and no FP operation is possible until emms
+   instruction is issued.  */
+
+/* This test case is adapted from gcc.dg/builtin-apply4.c.  */
+ 
+/* { dg-do run { xfail { ! *-*-darwin* } } } */
+/* { dg-options "-O2 -mmmx" } */
+/* { dg-require-effective-target ilp32 } */
+
+#include "mmx-check.h"
+
+extern void abort (void);
+
+double
+foo (double arg)
+{
+  if (arg != 116.0)
+    abort ();
+
+  return arg + 1.0;
+}
+
+inline double
+bar (double arg)
+{
+  foo (arg);
+  __builtin_return (__builtin_apply ((void (*)()) foo,
+				     __builtin_apply_args (), 16));
+}
+
+static void
+mmx_test (void)
+{
+  if (bar (116.0) != 117.0)
+    abort ();
+}