From: Bin Cheng <bin.cheng@arm.com>
Date: Thu, 7 Nov 2013 08:34:02 +0000 (+0000)
Subject: tree-ssa-loop-ivopts.c (get_shiftadd_cost): Check equality using operand_equal_p.
X-Git-Tag: upstream/12.2.0~66780
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1a1a55342cdeae4d1431b2b0c6c753939b8f1d4d;p=platform%2Fupstream%2Fgcc.git

tree-ssa-loop-ivopts.c (get_shiftadd_cost): Check equality using operand_equal_p.


	* tree-ssa-loop-ivopts.c (get_shiftadd_cost): Check equality
	using operand_equal_p.

From-SVN: r204498
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fcbcbb5..89ce097 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2013-11-07  Bin Cheng  <bin.cheng@arm.com>
 
+	* tree-ssa-loop-ivopts.c (get_shiftadd_cost): Check equality
+	using operand_equal_p.
+
+2013-11-07  Bin Cheng  <bin.cheng@arm.com>
+
 	* tree-ssa-loop-ivopts.c (alloc_iv): Lower address expressions.
 	* tree-affine.c (get_inner_reference_aff): Return base.
 	* tree-affine.h (get_inner_reference_aff): Change prototype.
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index 220aae6..f7da126 100644
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -3500,17 +3500,21 @@ get_shiftadd_cost (tree expr, enum machine_mode mode, comp_cost cost0,
   int m = exact_log2 (int_cst_value (cst));
   int maxm = MIN (BITS_PER_WORD, GET_MODE_BITSIZE (mode));
   int sa_cost;
+  bool equal_p = false;
 
   if (!(m >= 0 && m < maxm))
     return false;
 
+  if (operand_equal_p (op1, mult, 0))
+    equal_p = true;
+
   sa_cost = (TREE_CODE (expr) != MINUS_EXPR
              ? shiftadd_cost (speed, mode, m)
-             : (mult == op1
+             : (equal_p
                 ? shiftsub1_cost (speed, mode, m)
                 : shiftsub0_cost (speed, mode, m)));
   res = new_cost (sa_cost, 0);
-  res = add_costs (res, mult == op1 ? cost0 : cost1);
+  res = add_costs (res, equal_p ? cost0 : cost1);
 
   STRIP_NOPS (multop);
   if (!is_gimple_val (multop))