diff mbox

[committed] Add fgcse-sm test with scan-rtl-dump

Message ID 546F3165.8060809@mentor.com
State New
Headers show

Commit Message

Tom de Vries Nov. 21, 2014, 12:34 p.m. UTC 
Hi,

this patch adds a fgcse-sm test with a scan-rtl-dump directive.

The other fgcse-sm tests:
...
./gcc/testsuite/gcc.dg/pr45352-3.c
./gcc/testsuite/gcc.dg/torture/pr24257.c
./gcc/testsuite/gcc.target/i386/movsi-sm-1.c
./gcc/testsuite/g++.dg/opt/pr36185.C
...
do not check whether fgcse-sm actually does something.

Committed as trivial.

Thanks,
- Tom
diff mbox

Patch

2014-11-21  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/store-motion-fgcse-sm.c: New test.
---
 gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c | 32 ++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c

diff --git a/gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c b/gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c
new file mode 100644
index 0000000..b331a24
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c
@@ -0,0 +1,32 @@ 
+/* { dg-do run } */
+/* { dg-options "-O2 -ftree-pre -fno-tree-loop-im -fgcse-sm -fdump-rtl-store_motion" } */
+
+/* tree-pre moves the *sum load out of the loop.  ftree-loop-im moves the *sum
+   store out of the loop, so we disable it, to allow fgcse-sm to do it
+   instead.  */
+
+#include <stdlib.h>
+
+void __attribute__((noinline))
+f (unsigned int *__restrict__ a, unsigned int *__restrict__ sum, unsigned int n)
+{
+  unsigned int i;
+  for (i = 0; i < n; ++i)
+    *sum += a[i];
+}
+
+int
+main ()
+{
+  unsigned int a[] = { 1, 10, 100 };
+  unsigned sum = 1000;
+
+  f (a, &sum, 3);
+  if (sum != 1111)
+    abort ();
+
+  return 0;
+}
+
+/* Check that -fgcse-sm did something for f.  */
+/* { dg-final { scan-rtl-dump "STORE_MOTION of f, .* basic blocks, 1 insns deleted, 1 insns created" "store_motion" } } */
-- 
1.9.1