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| author | Daniel Berlin <dberlin@dberlin.org> | 2006-03-25 19:17:26 +0000 |
|---|---|---|
| committer | Daniel Berlin <dberlin@gcc.gnu.org> | 2006-03-25 19:17:26 +0000 |
| commit | fe1f8f442ef9952650c38ae0383498d41965775c (patch) | |
| tree | 224a37b6b651b721ab029a9a7063751f561e976e /gcc/tree-ssa-alias.c | |
| parent | 1d8b38a080f6862c5e0e1f407851e9b73c622e33 (diff) | |
| download | gcc-fe1f8f442ef9952650c38ae0383498d41965775c.tar.gz | |
re PR tree-optimization/26804 (Alias Time explosion)
2006-03-25 Daniel Berlin <dberlin@dberlin.org>
PR tree-optimization/26804
* tree.h (DECL_CALL_CLOBBERED): New macro.
(tree_decl_common): Add call_clobbered_flag.
* tree-flow-inline.h (is_call_clobbered): Use DECL_CALL_CLOBBERED.
(mark_call_clobbered): Set DECL_CALL_CLOBBERED.
(clear_call_clobbered): Clear DECL_CALL_CLOBBERED.
(mark_non_addressable): Ditto.
* tree-ssa.c (verify_call_clobbered): New function.
(verify_alias_info): Use it.
* tree-pass.h (pass_reset_cc_flags): New prototype.
* tree-ssa-alias.c (pass_reset_cc_flags): New structure.
(reset_cc_flags): New function.
* passes.c (init_optimization_passes): Call reset_cc_flags after
initializing referenced_vars.
From-SVN: r112380
Diffstat (limited to 'gcc/tree-ssa-alias.c')
| -rw-r--r-- | gcc/tree-ssa-alias.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 7b702f00765..e1fcb0be831 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -3193,3 +3193,34 @@ struct tree_opt_pass pass_create_structure_vars = TODO_dump_func, /* todo_flags_finish */ 0 /* letter */ }; + +/* Reset the DECL_CALL_CLOBBERED flags on our referenced vars. In + theory, this only needs to be done for globals. */ + +static unsigned int +reset_cc_flags (void) +{ + tree var; + referenced_var_iterator rvi; + + FOR_EACH_REFERENCED_VAR (var, rvi) + DECL_CALL_CLOBBERED (var) = false; + return 0; +} + +struct tree_opt_pass pass_reset_cc_flags = +{ + NULL, /* name */ + NULL, /* gate */ + reset_cc_flags, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + 0, /* tv_id */ + PROP_referenced_vars |PROP_cfg, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + 0, /* todo_flags_finish */ + 0 /* letter */ +}; |