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tree-eh.c (cleanup_empty_eh_merge_phis): Remove rename_virts bitmap and its handling.

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* tree-eh.c (cleanup_empty_eh_merge_phis): Remove rename_virts
	bitmap and its handling.
	(pass_cleanup_eh): Set todo_flags_finish to TODO_verify_ssa.

From-SVN: r198552
This commit is contained in:
Richard Biener 2013-05-02 17:24:26 +00:00 • committed by Jakub Jelinek
parent 1634e53f83
commit d90e76d4e1
2 changed files with 8 additions and 28 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2013-05-02 Richard Biener <rguenther@suse.de>
* tree-eh.c (cleanup_empty_eh_merge_phis): Remove rename_virts
bitmap and its handling.
(pass_cleanup_eh): Set todo_flags_finish to TODO_verify_ssa.
2013-05-02 Richard Biener <rguenther@suse.de>
PR middle-end/57140

30
gcc/tree-eh.c
View file

@ -3949,7 +3949,6 @@ cleanup_empty_eh_merge_phis (basic_block new_bb, basic_block old_bb,
gimple_stmt_iterator ngsi, ogsi;
edge_iterator ei;
edge e;
bitmap rename_virts;
bitmap ophi_handled;
/* The destination block must not be a regular successor for any
@ -3972,7 +3971,6 @@ cleanup_empty_eh_merge_phis (basic_block new_bb, basic_block old_bb,
redirect_edge_var_map_clear (e);
ophi_handled = BITMAP_ALLOC (NULL);
rename_virts = BITMAP_ALLOC (NULL);
/* First, iterate through the PHIs on NEW_BB and set up the edge_var_map
for the edges we're going to move. */
@ -4025,11 +4023,7 @@ cleanup_empty_eh_merge_phis (basic_block new_bb, basic_block old_bb,
redirect_edge_var_map_add (e, nresult, oop, oloc);
}
}
/* If we didn't find the PHI, but it's a VOP, remember to rename
it later, assuming all other tests succeed. */
else if (virtual_operand_p (nresult))
bitmap_set_bit (rename_virts, SSA_NAME_VERSION (nresult));
/* If we didn't find the PHI, and it's a real variable, we know
/* If we didn't find the PHI, if it's a real variable or a VOP, we know
from the fact that OLD_BB is tree_empty_eh_handler_p that the
variable is unchanged from input to the block and we can simply
re-use the input to NEW_BB from the OLD_BB_OUT edge. */
@ -4052,24 +4046,6 @@ cleanup_empty_eh_merge_phis (basic_block new_bb, basic_block old_bb,
goto fail;
}
/* At this point we know that the merge will succeed. Remove the PHI
nodes for the virtuals that we want to rename. */
if (!bitmap_empty_p (rename_virts))
{
for (ngsi = gsi_start_phis (new_bb); !gsi_end_p (ngsi); )
{
gimple nphi = gsi_stmt (ngsi);
tree nresult = gimple_phi_result (nphi);
if (bitmap_bit_p (rename_virts, SSA_NAME_VERSION (nresult)))
{
mark_virtual_phi_result_for_renaming (nphi);
remove_phi_node (&ngsi, true);
}
else
gsi_next (&ngsi);
}
}
/* Finally, move the edges and update the PHIs. */
for (ei = ei_start (old_bb->preds); (e = ei_safe_edge (ei)); )
if (e->flags & EDGE_EH)
@ -4097,14 +4073,12 @@ cleanup_empty_eh_merge_phis (basic_block new_bb, basic_block old_bb,
ei_next (&ei);
BITMAP_FREE (ophi_handled);
BITMAP_FREE (rename_virts);
return true;
fail:
FOR_EACH_EDGE (e, ei, old_bb->preds)
redirect_edge_var_map_clear (e);
BITMAP_FREE (ophi_handled);
BITMAP_FREE (rename_virts);
return false;
}
@ -4467,7 +4441,7 @@ struct gimple_opt_pass pass_cleanup_eh = {
0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
0 /* todo_flags_finish */
TODO_verify_ssa /* todo_flags_finish */
}
};