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| author | Jan Hubicka <jh@suse.cz> | 2012-10-12 22:38:19 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2012-10-12 20:38:19 +0000 |
| commit | 535269f4f984e10f912283b2817ec86f0004e442 (patch) | |
| tree | 538b2f557aad7f31543b71fd37f642ef0b2cdef1 /gcc/tree-ssa-threadupdate.c | |
| parent | 46042c015e2827a82487956b0f50995e4fb80dc4 (diff) | |
| download | gcc-535269f4f984e10f912283b2817ec86f0004e442.zip gcc-535269f4f984e10f912283b2817ec86f0004e442.tar.gz gcc-535269f4f984e10f912283b2817ec86f0004e442.tar.bz2 | |
tree-ssa-threadupdate.c (def_split_header_continue_p): Do not escape the loop.
* tree-ssa-threadupdate.c (def_split_header_continue_p): Do not
escape the loop.
From-SVN: r192414
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index 2eee50e..ad64876 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -846,9 +846,15 @@ static bool def_split_header_continue_p (const_basic_block bb, const void *data) { const_basic_block new_header = (const_basic_block) data; - return (bb != new_header - && (loop_depth (bb->loop_father) - >= loop_depth (new_header->loop_father))); + const struct loop *l; + + if (bb == new_header + || loop_depth (bb->loop_father) < loop_depth (new_header->loop_father)) + return false; + for (l = bb->loop_father; l; l = loop_outer (l)) + if (l == new_header->loop_father) + return true; + return false; } /* Thread jumps through the header of LOOP. Returns true if cfg changes. |