From ba483b00de68c9d5dfca8de0789aa66dd3433d10 Mon Sep 17 00:00:00 2001
From: Tom de Vries <tom@codesourcery.com>
Date: Fri, 21 Nov 2014 12:26:11 +0000
Subject: [PATCH] Add fgcse-sm test with scan-rtl-dump
2014-11-21 Tom de Vries <tom@codesourcery.com>
* gcc.dg/store-motion-fgcse-sm.c: New test.
From-SVN: r217916
---
gcc/testsuite/ChangeLog | 4 +++
gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c | 32 ++++++++++++++++++++
2 files changed, 36 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 26b2c25073a9..1c6cb24869f4 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2014-11-21 Tom de Vries <tom@codesourcery.com>
+
+ * gcc.dg/store-motion-fgcse-sm.c: New test.
+
2014-11-21 Evgeny Stupachenko <evstupac@gmail.com>
PR target/60451
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 000000000000..b331a24e3461
--- /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" } } */
--
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