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| author | Richard Guenther <rguenther@suse.de> | 2012-02-08 15:28:01 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-02-08 15:28:01 +0000 |
| commit | 31432e219f044eb7195b9f802db88ace3e7fe8a1 (patch) | |
| tree | 1efa0d6fbc6e7f4dd31d427ac6c423dc2e46bc4e /libgomp/testsuite | |
| parent | c51ec0a3d68c86ba9b2e2d0c61556fee8308d570 (diff) | |
| download | gcc-31432e219f044eb7195b9f802db88ace3e7fe8a1.zip gcc-31432e219f044eb7195b9f802db88ace3e7fe8a1.tar.gz gcc-31432e219f044eb7195b9f802db88ace3e7fe8a1.tar.bz2 | |
re PR tree-optimization/46886 (wrong code with -ftree-parallelize-loops -fno-tree-ch)
2012-03-08 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46886
* tree-flow.h (do_while_loop_p): Declare.
* tree-ssa-loop-ch.c (do_while_loop_p): Export.
* tree-parloops.c (parallelize_loops): Only parallelize do-while
loops.
* testsuite/libgomp.c/pr46886.c: New testcase.
From-SVN: r184010
Diffstat (limited to 'libgomp/testsuite')
| -rw-r--r-- | libgomp/testsuite/libgomp.c/pr46886.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/libgomp/testsuite/libgomp.c/pr46886.c b/libgomp/testsuite/libgomp.c/pr46886.c new file mode 100644 index 0000000..fbdc4e1 --- /dev/null +++ b/libgomp/testsuite/libgomp.c/pr46886.c @@ -0,0 +1,28 @@ +/* { dg-do run } */ +/* { dg-options "-O -ftree-parallelize-loops=4 -fno-tree-ch -fno-tree-dominator-opts" } */ + +void abort(void); + +int d[1024], e[1024]; + +int foo (void) +{ + int s = 0; + int i; + for (i = 0; i < 1024; i++) + s += d[i] - e[i]; + return s; +} + +int main () +{ + int i; + for (i = 0; i < 1024; i++) + { + d[i] = i * 2; + e[i] = i; + } + if (foo () != 1023 * 1024 / 2) + abort (); + return 0; +} |