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tree-ssa-phiopt.c (tree_ssa_phiopt): Add cfgchanged variable.

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2006-03-09  Andrew Pinski  <pinskia@physics.uc.edu>

        * tree-ssa-phiopt.c (tree_ssa_phiopt): Add cfgchanged variable.
        Set it when one of the replacement functions returned true.
        Return TODO_cleanup_cfg if cfgchanged is true.
        (pass_phiopt) <todo_flags_finish>: Remove TODO_cleanup_cfg.

From-SVN: r111920
This commit is contained in:
Andrew Pinski 2006-03-10 01:22:54 +00:00 committed by Andrew Pinski
parent 0ade2ddf23
commit 3e0a08d711
2 changed files with 17 additions and 8 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2006-03-09 Andrew Pinski <pinskia@physics.uc.edu>
* tree-ssa-phiopt.c (tree_ssa_phiopt): Add cfgchanged variable.
Set it when one of the replacement functions returned true.
Return TODO_cleanup_cfg if cfgchanged is true.
(pass_phiopt) <todo_flags_finish>: Remove TODO_cleanup_cfg.
2006-03-09 Adam Nemet <anemet@caviumnetworks.com>
* combine.c (simplify_shift_const_1): Use gen_lowpart_or_truncate

18
gcc/tree-ssa-phiopt.c
View File

@ -139,6 +139,7 @@ tree_ssa_phiopt (void)
basic_block bb;
basic_block *bb_order;
unsigned n, i;
bool cfgchanged = false;
/* Search every basic block for COND_EXPR we may be able to optimize.
@ -227,17 +228,19 @@ tree_ssa_phiopt (void)
/* Do the replacement of conditional if it can be done. */
if (conditional_replacement (bb, bb1, e1, e2, phi, arg0, arg1))
;
cfgchanged = true;
else if (value_replacement (bb, bb1, e1, e2, phi, arg0, arg1))
;
cfgchanged = true;
else if (abs_replacement (bb, bb1, e1, e2, phi, arg0, arg1))
;
else
minmax_replacement (bb, bb1, e1, e2, phi, arg0, arg1);
cfgchanged = true;
else if (minmax_replacement (bb, bb1, e1, e2, phi, arg0, arg1))
cfgchanged = true;
}
free (bb_order);
return 0;
/* If the CFG has changed, we should cleanup the CFG. */
return cfgchanged ? TODO_cleanup_cfg : 0;
}
/* Returns the list of basic blocks in the function in an order that guarantees
@ -1010,8 +1013,7 @@ struct tree_opt_pass pass_phiopt =
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_cleanup_cfg
| TODO_dump_func
TODO_dump_func
| TODO_ggc_collect
| TODO_verify_ssa
| TODO_verify_flow