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, 38 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/opt-2.c b/gcc/testsuite/gcc.target/i386/opt-2.c
new file mode 100644
index 000000000..d2791e071
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/opt-2.c
@@ -0,0 +1,38 @@
+/* Test the attribute((optimize)) really works.  Do this test by checking
+   whether we vectorize a simple loop.  */
+/* { dg-do compile } */
+/* { dg-options "-O1 -msse2 -mfpmath=sse -march=k8" } */
+/* { dg-final { scan-assembler "prefetcht0" } } */
+/* { dg-final { scan-assembler "addps" } } */
+/* { dg-final { scan-assembler "subss" } } */
+
+#define SIZE 10240
+float a[SIZE] __attribute__((__aligned__(32)));
+float b[SIZE] __attribute__((__aligned__(32)));
+float c[SIZE] __attribute__((__aligned__(32)));
+
+/* This should vectorize.  */
+#pragma GCC push_options
+#pragma GCC optimize (3, "unroll-all-loops", "-fprefetch-loop-arrays")
+
+void
+opt3 (void)
+{
+  int i;
+
+  for (i = 0; i < SIZE; i++)
+    a[i] = b[i] + c[i];
+}
+
+#pragma GCC pop_options
+
+/* This should not vectorize.  */
+void
+not_opt3 (void)
+{
+  int i;
+
+  for (i = 0; i < SIZE; i++)
+    a[i] = b[i] - c[i];
+}
+