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tree-ssa-pre.c (get_representative_for): Make sure to return the value number of SSA names.

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2016-07-15  Richard Biener  <rguenther@suse.de>

	* tree-ssa-pre.c (get_representative_for): Make sure to return
	the value number of SSA names.
	(phi_translate_1): get_representative_for cannot return NULL.
	(do_pre_regular_insertion): Remove redundant call to
	fully_constant_expression.
	(do_pre_partial_partial_insertion): Likewise.

From-SVN: r238370
This commit is contained in:
Richard Biener 2016-07-15 10:53:29 +00:00 committed by Richard Biener
parent ddbbcb1981
commit a8e15f9074
2 changed files with 15 additions and 17 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2016-07-15 Richard Biener <rguenther@suse.de>
* tree-ssa-pre.c (get_representative_for): Make sure to return
the value number of SSA names.
(phi_translate_1): get_representative_for cannot return NULL.
(do_pre_regular_insertion): Remove redundant call to
fully_constant_expression.
(do_pre_partial_partial_insertion): Likewise.
2016-07-15 Bin Cheng <bin.cheng@arm.com>
* tree-scalar-evolution.c (simple_iv_with_niters): New funcion.

23
gcc/tree-ssa-pre.c
View File

@ -1365,7 +1365,7 @@ get_representative_for (const pre_expr e)
switch (e->kind)
{
case NAME:
return PRE_EXPR_NAME (e);
return VN_INFO (PRE_EXPR_NAME (e))->valnum;
case CONSTANT:
return PRE_EXPR_CONSTANT (e);
case NARY:
@ -1380,7 +1380,7 @@ get_representative_for (const pre_expr e)
{
pre_expr rep = expression_for_id (i);
if (rep->kind == NAME)
return PRE_EXPR_NAME (rep);
return VN_INFO (PRE_EXPR_NAME (rep))->valnum;
else if (rep->kind == CONSTANT)
return PRE_EXPR_CONSTANT (rep);
}
@ -1448,12 +1448,7 @@ phi_translate_1 (pre_expr expr, bitmap_set_t set1, bitmap_set_t set2,
leader = find_leader_in_sets (op_val_id, set1, set2);
result = phi_translate (leader, set1, set2, pred, phiblock);
if (result && result != leader)
{
tree name = get_representative_for (result);
if (!name)
return NULL;
newnary->op[i] = name;
}
newnary->op[i] = get_representative_for (result);
else if (!result)
return NULL;
@ -1543,19 +1538,15 @@ phi_translate_1 (pre_expr expr, bitmap_set_t set1, bitmap_set_t set2,
}
op_val_id = VN_INFO (op[n])->value_id;
leader = find_leader_in_sets (op_val_id, set1, set2);
if (!leader)
break;
opresult = phi_translate (leader, set1, set2, pred, phiblock);
if (!opresult)
break;
if (opresult != leader)
if (opresult && opresult != leader)
{
tree name = get_representative_for (opresult);
if (!name)
break;
changed |= name != op[n];
op[n] = name;
}
else if (!opresult)
break;
}
if (n != 3)
{
@ -3198,7 +3189,6 @@ do_pre_regular_insertion (basic_block block, basic_block dom)
break;
}
eprime = fully_constant_expression (eprime);
vprime = get_expr_value_id (eprime);
edoubleprime = bitmap_find_leader (AVAIL_OUT (bprime),
vprime);
@ -3357,7 +3347,6 @@ do_pre_partial_partial_insertion (basic_block block, basic_block dom)
break;
}
eprime = fully_constant_expression (eprime);
vprime = get_expr_value_id (eprime);
edoubleprime = bitmap_find_leader (AVAIL_OUT (bprime), vprime);
avail[pred->dest_idx] = edoubleprime;