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cfgexpand.c (gimple_expand_cfg): Free dominator info.

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2012-03-05  Richard Guenther  <rguenther@suse.de>

	* cfgexpand.c (gimple_expand_cfg): Free dominator info.
	* tree-if-conv.c (combine_blocks): Free post-dominator info
	after breaking it.
	* tree-parloops.c (create_parallel_loop): Free and re-compute
	dominator info after breaking it.

From-SVN: r184933
This commit is contained in:
Richard Guenther 2012-03-05 14:36:18 +00:00 • committed by Richard Biener
parent b55f62ccae
commit cd7d9fd77b
4 changed files with 17 additions and 0 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2012-03-05 Richard Guenther <rguenther@suse.de>
* cfgexpand.c (gimple_expand_cfg): Free dominator info.
* tree-if-conv.c (combine_blocks): Free post-dominator info
after breaking it.
* tree-parloops.c (create_parallel_loop): Free and re-compute
dominator info after breaking it.
2012-03-05 Richard Guenther <rguenther@suse.de>
PR middle-end/52353

2
gcc/cfgexpand.c
View file

@ -4362,6 +4362,8 @@ gimple_expand_cfg (void)
/* Some backends want to know that we are expanding to RTL. */
currently_expanding_to_rtl = 1;
/* Dominators are not kept up-to-date as we may create new basic-blocks. */
free_dominance_info (CDI_DOMINATORS);
rtl_profile_for_bb (ENTRY_BLOCK_PTR);

3
gcc/tree-if-conv.c
View file

@ -1712,6 +1712,9 @@ combine_blocks (struct loop *loop)
free (ifc_bbs);
ifc_bbs = NULL;
/* Post-dominators are corrupt now. */
free_dominance_info (CDI_POST_DOMINATORS);
}
/* If-convert LOOP when it is legal. For the moment this pass has no

4
gcc/tree-parloops.c
View file

@ -1740,6 +1740,10 @@ create_parallel_loop (struct loop *loop, tree loop_fn, tree data,
gimple_set_location (stmt, loc);
gsi_insert_after (&gsi, stmt, GSI_NEW_STMT);
/* After the above dom info is hosed. Re-compute it. */
free_dominance_info (CDI_DOMINATORS);
calculate_dominance_info (CDI_DOMINATORS);
return paral_bb;
}