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tree-ssa-loop-ivopts.c (force_expr_to_var_cost): Refactor the code.

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* tree-ssa-loop-ivopts.c (force_expr_to_var_cost): Refactor the code.
	Handle type conversion.

From-SVN: r204695
This commit is contained in:
Bin Cheng 2013-11-12 06:42:05 +00:00 • committed by Bin Cheng
parent 97a23b7475
commit 801a661c44
2 changed files with 28 additions and 18 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2013-11-12 Bin Cheng <bin.cheng@arm.com>
* tree-ssa-loop-ivopts.c (force_expr_to_var_cost): Refactor the code.
Handle type conversion.
2013-11-11 Martin Liska <marxin.liska@gmail.com>
Jan Hubicka <jh@suse.cz>

41
gcc/tree-ssa-loop-ivopts.c
View file

@ -3608,30 +3608,13 @@ force_expr_to_var_cost (tree expr, bool speed)
op1 = TREE_OPERAND (expr, 1);
STRIP_NOPS (op0);
STRIP_NOPS (op1);
if (is_gimple_val (op0))
cost0 = no_cost;
else
cost0 = force_expr_to_var_cost (op0, speed);
if (is_gimple_val (op1))
cost1 = no_cost;
else
cost1 = force_expr_to_var_cost (op1, speed);
break;
CASE_CONVERT:
case NEGATE_EXPR:
op0 = TREE_OPERAND (expr, 0);
STRIP_NOPS (op0);
op1 = NULL_TREE;
if (is_gimple_val (op0))
cost0 = no_cost;
else
cost0 = force_expr_to_var_cost (op0, speed);
cost1 = no_cost;
break;
default:
@ -3639,6 +3622,18 @@ force_expr_to_var_cost (tree expr, bool speed)
return new_cost (target_spill_cost[speed], 0);
}
if (op0 == NULL_TREE
|| TREE_CODE (op0) == SSA_NAME || CONSTANT_CLASS_P (op0))
cost0 = no_cost;
else
cost0 = force_expr_to_var_cost (op0, speed);
if (op1 == NULL_TREE
|| TREE_CODE (op1) == SSA_NAME || CONSTANT_CLASS_P (op1))
cost1 = no_cost;
else
cost1 = force_expr_to_var_cost (op1, speed);
mode = TYPE_MODE (TREE_TYPE (expr));
switch (TREE_CODE (expr))
{
@ -3664,6 +3659,16 @@ force_expr_to_var_cost (tree expr, bool speed)
}
break;
CASE_CONVERT:
{
tree inner_mode, outer_mode;
outer_mode = TREE_TYPE (expr);
inner_mode = TREE_TYPE (op0);
cost = new_cost (convert_cost (TYPE_MODE (outer_mode),
TYPE_MODE (inner_mode), speed), 0);
}
break;
case MULT_EXPR:
if (cst_and_fits_in_hwi (op0))
cost = new_cost (mult_by_coeff_cost (int_cst_value (op0),