* [PATCH GCC]Preserve ssa name (thus vrp info) for IV structure. Committed.
@ 2015-06-03 7:59 Bin.Cheng
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From: Bin.Cheng @ 2015-06-03 7:59 UTC (permalink / raw)
To: gcc-patches List
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Hi,
I applied this obvious patch to trunk. It was approved in last Stage 4.
Thanks,
bin
2015-06-03 Bin Cheng <bin.cheng@arm.com>
* tree-ssa-loop-ivopts.c (dump_iv): New parameter.
(dump_use, dump_cand, find_induction_variables): Pass new argument
to dump_iv.
(record_use): Preserve the ssa name information in IV.
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Index: gcc/tree-ssa-loop-ivopts.c
===================================================================
--- gcc/tree-ssa-loop-ivopts.c (revision 224056)
+++ gcc/tree-ssa-loop-ivopts.c (working copy)
@@ -517,9 +517,9 @@ single_dom_exit (struct loop *loop)
/* Dumps information about the induction variable IV to FILE. */
void
-dump_iv (FILE *file, struct iv *iv)
+dump_iv (FILE *file, struct iv *iv, bool dump_name)
{
- if (iv->ssa_name)
+ if (iv->ssa_name && dump_name)
{
fprintf (file, "ssa name ");
print_generic_expr (file, iv->ssa_name, TDF_SLIM);
@@ -596,7 +596,7 @@ dump_use (FILE *file, struct iv_use *use)
print_generic_expr (file, *use->op_p, TDF_SLIM);
fprintf (file, "\n");
- dump_iv (file, use->iv);
+ dump_iv (file, use->iv, false);
if (use->related_cands)
{
@@ -684,7 +684,7 @@ dump_cand (FILE *file, struct iv_cand *cand)
break;
}
- dump_iv (file, iv);
+ dump_iv (file, iv, false);
}
/* Returns the info for ssa version VER. */
@@ -1326,7 +1326,7 @@ find_induction_variables (struct ivopts_data *data
EXECUTE_IF_SET_IN_BITMAP (data->relevant, 0, i, bi)
{
if (ver_info (data, i)->iv)
- dump_iv (dump_file, ver_info (data, i)->iv);
+ dump_iv (dump_file, ver_info (data, i)->iv, true);
}
}
@@ -1356,10 +1356,6 @@ record_use (struct ivopts_data *data, tree *use_p,
use->addr_base = addr_base;
use->addr_offset = addr_offset;
- /* To avoid showing ssa name in the dumps, if it was not reset by the
- caller. */
- iv->ssa_name = NULL_TREE;
-
data->iv_uses.safe_push (use);
return use;
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2015-06-03 7:59 [PATCH GCC]Preserve ssa name (thus vrp info) for IV structure. Committed Bin.Cheng
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