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| author | Richard Guenther <rguenther@suse.de> | 2008-09-18 12:52:31 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2008-09-18 12:52:31 +0000 |
| commit | 3d9fbb9abd4785660983bc1d239f3f03e8dbc67c (patch) | |
| tree | 61f41c90f3305be3ed3d3d0a98c933c45e676023 /gcc/tree-cfg.c | |
| parent | 35f2d8efd6b2d344c2147f13b8757547afc8a604 (diff) | |
| download | gcc-3d9fbb9abd4785660983bc1d239f3f03e8dbc67c.zip gcc-3d9fbb9abd4785660983bc1d239f3f03e8dbc67c.tar.gz gcc-3d9fbb9abd4785660983bc1d239f3f03e8dbc67c.tar.bz2 | |
re PR middle-end/37284 (ICE on valid code with -fstrict-aliasing)
2008-09-18 Richard Guenther <rguenther@suse.de>
PR middle-end/37284
* tree-cfg.c (remove_useless_stmts_1): Remove
GIMPLE_CHANGE_DYNAMIC_TYPE if not optimizing.
* g++.dg/tree-ssa/pr37284.C: New testcase.
From-SVN: r140453
Diffstat (limited to 'gcc/tree-cfg.c')
| -rw-r--r-- | gcc/tree-cfg.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index ef891e5..e9f315c 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -1997,6 +1997,18 @@ remove_useless_stmts_1 (gimple_stmt_iterator *gsi, struct rus_data *data) } break; + case GIMPLE_CHANGE_DYNAMIC_TYPE: + /* If we do not optimize remove GIMPLE_CHANGE_DYNAMIC_TYPE as + expansion is confused about them and we only remove them + during alias computation otherwise. */ + if (!optimize) + { + data->last_was_goto = false; + gsi_remove (gsi, false); + break; + } + /* Fallthru. */ + default: data->last_was_goto = false; gsi_next (gsi); |