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, 45 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/mips/r10k-cache-barrier-1.c b/gcc/testsuite/gcc.target/mips/r10k-cache-barrier-1.c
new file mode 100644
index 000000000..b271e2bf4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/r10k-cache-barrier-1.c
@@ -0,0 +1,45 @@
+/* { dg-options "-O2 -mabi=64 -mr10k-cache-barrier=store" } */
+
+/* Test that stores to uncached addresses do not get unnecessary
+   cache barriers.  */
+
+#define TEST(ADDR)					\
+  NOMIPS16 void						\
+  test_##ADDR (int n)					\
+  {							\
+    while (n--)						\
+      {							\
+	*(volatile char *) (0x##ADDR##UL) = 1;		\
+	*(volatile short *) (0x##ADDR##UL + 2) = 2;	\
+	*(volatile int *) (0x##ADDR##UL + 4) = 0;	\
+      }							\
+  }
+
+TEST (9000000000000000)
+TEST (900000fffffffff8)
+
+TEST (9200000000000000)
+TEST (920000fffffffff8)
+
+TEST (9400000000000000)
+TEST (940000fffffffff8)
+
+TEST (9600000000000000)
+TEST (960000fffffffff8)
+
+TEST (b800000000000000)
+TEST (b80000fffffffff8)
+
+TEST (ba00000000000000)
+TEST (ba0000fffffffff8)
+
+TEST (bc00000000000000)
+TEST (bc0000fffffffff8)
+
+TEST (be00000000000000)
+TEST (be0000fffffffff8)
+
+TEST (ffffffffa0000000)
+TEST (ffffffffbffffff8)
+
+/* { dg-final { scan-assembler-not "\tcache\t" } } */