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| author | Jakub Jelinek <jakub@redhat.com> | 2001-11-15 11:41:48 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2001-11-15 11:41:48 +0100 |
| commit | feb265abdb7bce4cb67733dc1c1c96644e6f790f (patch) | |
| tree | 361d0de7f868ea7e399a885307f7d6c9618fee0f /gcc/cfgcleanup.c | |
| parent | 8f5a5db8187f51e0cbbf8bbb1b13be97fdf2fe4b (diff) | |
| download | gcc-feb265abdb7bce4cb67733dc1c1c96644e6f790f.zip gcc-feb265abdb7bce4cb67733dc1c1c96644e6f790f.tar.gz gcc-feb265abdb7bce4cb67733dc1c1c96644e6f790f.tar.bz2 | |
cfgcleanup.c (try_optimize_cfg): If try_simplify_condjump optimized conditional jump...
* cfgcleanup.c (try_optimize_cfg): If try_simplify_condjump optimized
conditional jump, request updating life into for the block
containing it. Fix a typo which prevented life info update.
Clear blocks bitmap before using it.
* gcc.c-torture/compile/20011114-3.c: New test.
From-SVN: r47050
Diffstat (limited to 'gcc/cfgcleanup.c')
| -rw-r--r-- | gcc/cfgcleanup.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index 03f767a..28f3a1f 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -1211,7 +1211,10 @@ try_optimize_cfg (mode) /* Simplify branch over branch. */ if ((mode & CLEANUP_EXPENSIVE) && try_simplify_condjump (b)) - changed_here = true; + { + BB_SET_FLAG (b, BB_UPDATE_LIFE); + changed_here = true; + } /* If B has a single outgoing edge, but uses a non-trivial jump instruction without side-effects, we can either delete the @@ -1261,10 +1264,11 @@ try_optimize_cfg (mode) if (mode & CLEANUP_CROSSJUMP) remove_fake_edges (); - if ((mode & CLEANUP_UPDATE_LIFE) & changed_overall) + if ((mode & CLEANUP_UPDATE_LIFE) && changed_overall) { bool found = 0; blocks = sbitmap_alloc (n_basic_blocks); + sbitmap_zero (blocks); for (i = 0; i < n_basic_blocks; i++) if (BB_FLAGS (BASIC_BLOCK (i)) & BB_UPDATE_LIFE) { |