From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; 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.
---
 gcc/testsuite/gcc.dg/tree-ssa/ldist-8.c | 34 +++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/ldist-8.c

(limited to 'gcc/testsuite/gcc.dg/tree-ssa/ldist-8.c')

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ldist-8.c b/gcc/testsuite/gcc.dg/tree-ssa/ldist-8.c
new file mode 100644
index 000000000..4a8e06600
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ldist-8.c
@@ -0,0 +1,34 @@
+/* { dg-do compile } */ 
+/* { dg-options "-O2 -ftree-loop-distribution -fdump-tree-ldist-all" } */
+
+int loop1 (int k)
+{
+  unsigned int i;
+  int a[1000], b[1000], c[1000], d[1000];
+
+  for (i = 2; i < (1000-1); i ++)
+    {
+      a[i] = k * i; /* S1 */
+      b[i] = a[i+1] + k; /* S2 */
+      c[i] = a[i-1] + b[i-1] + d[i-1]; /* S3 */
+      d[i] = a[i-1] + b[i+1] + k + i; /* S4 */
+    }
+  /* Dependences:
+     S1->S2 (anti, level 1)
+     S1->S3 (flow, level 1)
+     S1->S4 (flow, level 1)
+     S2->S3 (flow, level 1)
+     S2->S4 (anti, level 1)
+     S4->S3 (flow, level 1)
+
+     Two partitions: {S1, S2, S4} produce information that is consumed in {S3}.
+
+     So that means that the current cost model will also fuse these
+     two partitions into a single one for avoiding cache misses.
+  */
+
+  return a[1000-2] + b[1000-1] + c[1000-2] + d[1000-2];
+}
+
+/* { dg-final { scan-tree-dump-times "distributed: split to 2 loops" 0 "ldist" } } */
+/* { dg-final { cleanup-tree-dump "ldist" } } */
-- 
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