[PATCH GCC8][15/33]Simplify function autoinc_possible_for_pair

[Bin Cheng]

Hi,
This patch simplifies function autoinc_possible_for_pair by deleting 
unnecessary local variables.
Is it OK?

Thanks,
bin
2017-04-11  Bin Cheng  <bin.ch...@arm.com>

        * tree-ssa-loop-ivopts.c (autoinc_possible_for_pair): Simplify.
From 09ea8cf6f542ab270ba9994f8491b926fc78237d Mon Sep 17 00:00:00 2001
From: Bin Cheng <binch...@e108451-lin.cambridge.arm.com>
Date: Wed, 1 Mar 2017 14:34:54 +0000
Subject: [PATCH 15/33] autoinc_possible_for_pair-20170220.txt

---
 gcc/tree-ssa-loop-ivopts.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index c9cf9cf..4948a47 100644
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -5232,19 +5232,12 @@ static bool
 autoinc_possible_for_pair (struct ivopts_data *data, struct iv_use *use,
                           struct iv_cand *cand)
 {
-  bitmap inv_vars;
-  bool can_autoinc;
-  comp_cost cost;
-
   if (use->type != USE_ADDRESS)
     return false;
 
-  cost = get_computation_cost (data, use, cand, true, &inv_vars,
-                              &can_autoinc, NULL);
-
-  BITMAP_FREE (inv_vars);
-
-  return !cost.infinite_cost_p () && can_autoinc;
+  bool can_autoinc = false;
+  get_computation_cost (data, use, cand, true, NULL, &can_autoinc, NULL);
+  return can_autoinc;
 }
 
 /* Examine IP_ORIGINAL candidates to see if they are incremented next to a
-- 
1.9.1