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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 /gcc/tree-parloops.c | |
| 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 'gcc/tree-parloops.c')
| -rw-r--r-- | gcc/tree-parloops.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/tree-parloops.c b/gcc/tree-parloops.c index 28c450d..221f257 100644 --- a/gcc/tree-parloops.c +++ b/gcc/tree-parloops.c @@ -2183,7 +2183,10 @@ parallelize_loops (void) || loop_has_blocks_with_irreducible_flag (loop) || (loop_preheader_edge (loop)->src->flags & BB_IRREDUCIBLE_LOOP) /* FIXME: the check for vector phi nodes could be removed. */ - || loop_has_vector_phi_nodes (loop)) + || loop_has_vector_phi_nodes (loop) + /* FIXME: transform_to_exit_first_loop does not handle not + header-copied loops correctly - see PR46886. */ + || !do_while_loop_p (loop)) continue; estimated = max_stmt_executions_int (loop, false); /* FIXME: Bypass this check as graphite doesn't update the |