From: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date: Thu, 19 May 2016 13:54:31 +0000 (+0000)
Subject: [ARM] Fix costing of sign-extending load in rtx costs
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f65970cfd092c36035f7a3c683707c2604bcd4a3;p=gcc.git

[ARM] Fix costing of sign-extending load in rtx costs

	* config/arm/arm.c (arm_new_rtx_costs, SIGN_EXTEND case):
	Don't add cost of inner memory when handling sign-extended
	loads.

From-SVN: r236461
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4771d5ae1c7..42e6224c4a0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2016-05-19  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/arm/arm.c (arm_new_rtx_costs, SIGN_EXTEND case):
+	Don't add cost of inner memory when handling sign-extended
+	loads.
+
 2016-05-19  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	PR rtl-optimization/71148
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index c3f74dcd58f..12060ba569f 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -10762,8 +10762,6 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
       if ((arm_arch4 || GET_MODE (XEXP (x, 0)) == SImode)
 	  && MEM_P (XEXP (x, 0)))
 	{
-	  *cost = rtx_cost (XEXP (x, 0), VOIDmode, code, 0, speed_p);
-
 	  if (mode == DImode)
 	    *cost += COSTS_N_INSNS (1);