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| author | Sebastian Pop <sebastian.pop@amd.com> | 2008-11-03 16:17:33 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2008-11-03 16:17:33 +0000 |
| commit | ede7cba0dd81777994a1d22b582ddb785b949224 (patch) | |
| tree | 0945fff32b773460231721e9efc16a21d46d6f8c /gcc | |
| parent | f4c59f4fd20bf116aa94e1efdd131746b1f3daa6 (diff) | |
| download | gcc-ede7cba0dd81777994a1d22b582ddb785b949224.zip gcc-ede7cba0dd81777994a1d22b582ddb785b949224.tar.gz gcc-ede7cba0dd81777994a1d22b582ddb785b949224.tar.bz2 | |
cfghooks.c (split_block): Set BB_IRREDUCIBLE_LOOP and EDGE_IRREDUCIBLE_LOOP.
2008-11-03 Sebastian Pop <sebastian.pop@amd.com>
* cfghooks.c (split_block): Set BB_IRREDUCIBLE_LOOP and
EDGE_IRREDUCIBLE_LOOP.
From-SVN: r141549
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cfghooks.c | 11 |
2 files changed, 15 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 32ebb5d..5d9bfaa 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-11-03 Sebastian Pop <sebastian.pop@amd.com> + + * cfghooks.c (split_block): Set BB_IRREDUCIBLE_LOOP and + EDGE_IRREDUCIBLE_LOOP. + 2008-11-03 Bernd Schmidt <bernd.schmidt@analog.com> * config/bfin/bfin.c (bfin_optimize_loop): Properly handle case diff --git a/gcc/cfghooks.c b/gcc/cfghooks.c index 0897b0d..10c04a8 100644 --- a/gcc/cfghooks.c +++ b/gcc/cfghooks.c @@ -425,6 +425,7 @@ edge split_block (basic_block bb, void *i) { basic_block new_bb; + edge res; if (!cfg_hooks->split_block) internal_error ("%s does not support split_block", cfg_hooks->name); @@ -450,7 +451,15 @@ split_block (basic_block bb, void *i) bb->loop_father->latch = new_bb; } - return make_single_succ_edge (bb, new_bb, EDGE_FALLTHRU); + res = make_single_succ_edge (bb, new_bb, EDGE_FALLTHRU); + + if (bb->flags & BB_IRREDUCIBLE_LOOP) + { + new_bb->flags |= BB_IRREDUCIBLE_LOOP; + res->flags |= EDGE_IRREDUCIBLE_LOOP; + } + + return res; } /* Splits block BB just after labels. The newly created edge is returned. */ |