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| author | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-02-04 23:51:28 +0000 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-02-04 23:51:28 +0000 |
| commit | 83bd032b4b837724b81c7db25be205771311a3a3 (patch) | |
| tree | cb5883febf06ea7e39d3e7a41458c08e927af1a5 /gcc/cfgcleanup.c | |
| parent | 14fa2cc05762323f22f92cdb1dee039277bc6292 (diff) | |
| download | gcc-83bd032b4b837724b81c7db25be205771311a3a3.zip gcc-83bd032b4b837724b81c7db25be205771311a3a3.tar.gz gcc-83bd032b4b837724b81c7db25be205771311a3a3.tar.bz2 | |
cfgcleanup.c (try_optimize_cfg): Avoid removing ENTRY_BLOCK_PTR.
* cfgcleanup.c (try_optimize_cfg): Avoid removing ENTRY_BLOCK_PTR.
From-SVN: r121584
Diffstat (limited to 'gcc/cfgcleanup.c')
| -rw-r--r-- | gcc/cfgcleanup.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index 7c5b745..ee5c69b 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -1992,7 +1992,7 @@ try_optimize_cfg (int mode) bool changed_here = false; /* Delete trivially dead basic blocks. */ - while (EDGE_COUNT (b->preds) == 0) + if (EDGE_COUNT (b->preds) == 0) { c = b->prev_bb; if (dump_file) @@ -2002,7 +2002,9 @@ try_optimize_cfg (int mode) delete_basic_block (b); if (!(mode & CLEANUP_CFGLAYOUT)) changed = true; - b = c; + /* Avoid trying to remove ENTRY_BLOCK_PTR. */ + b = (c == ENTRY_BLOCK_PTR ? c->next_bb : c); + continue; } /* Remove code labels no longer used. */ |