From 626f4dd8f52c0e85892dc4bd9f7bb2a1c87e2f3c Mon Sep 17 00:00:00 2001 From: Richard Guenther Date: Fri, 28 Mar 2008 13:44:41 +0000 Subject: [PATCH] re PR rtl-optimization/19580 (missed load/store motion) 2008-03-28 Richard Guenther PR tree-optimization/19580 * gcc.dg/tree-ssa/loop-34.c: New testcase. From-SVN: r133683 --- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.dg/tree-ssa/loop-34.c | 21 +++++++++++++++++++++ 2 files changed, 26 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/loop-34.c diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 3fd0aa2c65bb..8392cfe454cf 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-03-28 Richard Guenther + + PR tree-optimization/19580 + * gcc.dg/tree-ssa/loop-34.c: New testcase. + 2008-03-28 Richard Guenther PR tree-optimization/30317 diff --git a/gcc/testsuite/gcc.dg/tree-ssa/loop-34.c b/gcc/testsuite/gcc.dg/tree-ssa/loop-34.c new file mode 100644 index 000000000000..4a0d1eaad561 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/loop-34.c @@ -0,0 +1,21 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-lim-details" } */ + +int r[6]; + +void f (int n) +{ + while (-- n) + { + r [0] += r [5]; + r [1] += r [0]; + r [2] += r [1]; + r [3] += r [2]; + r [4] += r [3]; + r [5] += r [4]; + } +} + + +/* { dg-final { scan-tree-dump-times "Executing store motion of r" 6 "lim" } } */ +/* { dg-final { cleanup-tree-dump "lim" } } */ -- 2.47.2