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re PR tree-optimization/56294 (BOOT_CFLAGS='-O2 -g -fno-ipa-sra' leads to bootstrap comparison failure)

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2013-03-06  Richard Biener  <rguenther@suse.de>

	PR middle-end/56294
	* tree-into-ssa.c (insert_phi_nodes_for): Add dumping.
	(insert_updated_phi_nodes_compare_uids): New function.
	(update_ssa): Sort symbols_to_rename after UID before
	traversing it to insert PHI nodes.

From-SVN: r196488
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Richard Biener 2013-03-06 11:24:07 +00:00 • committed by Richard Biener
parent 010403d180
commit fa5556deb3
2 changed files with 26 additions and 0 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2013-03-06 Richard Biener <rguenther@suse.de>
PR middle-end/56294
* tree-into-ssa.c (insert_phi_nodes_for): Add dumping.
(insert_updated_phi_nodes_compare_uids): New function.
(update_ssa): Sort symbols_to_rename after UID before
traversing it to insert PHI nodes.
2013-03-06 Richard Biener <rguenther@suse.de>
PR middle-end/50494

18
gcc/tree-into-ssa.c
View file

@ -969,6 +969,12 @@ insert_phi_nodes_for (tree var, bitmap phi_insertion_points, bool update_p)
if (update_p)
mark_block_for_update (bb);
if (dump_file && (dump_flags & TDF_DETAILS))
{
fprintf (dump_file, "creating PHI node in block #%d for ", bb_index);
print_generic_expr (dump_file, var, TDF_SLIM);
fprintf (dump_file, "\n");
}
phi = NULL;
if (TREE_CODE (var) == SSA_NAME)
@ -3040,6 +3046,17 @@ insert_updated_phi_nodes_for (tree var, bitmap_head *dfs, bitmap blocks,
BITMAP_FREE (idf);
}
/* Sort symbols_to_rename after their DECL_UID. */
static int
insert_updated_phi_nodes_compare_uids (const void *a, const void *b)
{
const_tree syma = *(const const_tree *)a;
const_tree symb = *(const const_tree *)b;
if (DECL_UID (syma) == DECL_UID (symb))
return 0;
return DECL_UID (syma) < DECL_UID (symb) ? -1 : 1;
}
/* Given a set of newly created SSA names (NEW_SSA_NAMES) and a set of
existing SSA names (OLD_SSA_NAMES), update the SSA form so that:
@ -3250,6 +3267,7 @@ update_ssa (unsigned update_flags)
sbitmap_free (tmp);
}
symbols_to_rename.qsort (insert_updated_phi_nodes_compare_uids);
FOR_EACH_VEC_ELT (symbols_to_rename, i, sym)
insert_updated_phi_nodes_for (sym, dfs, blocks_to_update,
update_flags);