2011-08-18  Richard Sandiford  <richard.sandiford@linaro.org>

 	gcc/
 	Backport from mainline:
 
	2011-08-18  Richard Sandiford  <richard.sandiford@linaro.org>

	* config/arm/arm.c (arm_rtx_costs_1): Don't modify the costs of SET.
	(arm_size_rtx_costs): Likewise.

=== modified file 'gcc/config/arm/arm.c'
--- old/gcc/config/arm/arm.c	2011-08-12 08:08:31 +0000
+++ new/gcc/config/arm/arm.c	2011-08-18 13:53:37 +0000
@@ -7464,6 +7464,9 @@
 	*total = COSTS_N_INSNS (4);
       return true;
 
+    case SET:
+      return false;
+
     default:
       *total = COSTS_N_INSNS (4);
       return false;
@@ -7811,6 +7814,9 @@
       *total = COSTS_N_INSNS (1) + 1;
       return true;
 
+    case SET:
+      return false;
+
     default:
       if (mode != VOIDmode)
 	*total = COSTS_N_INSNS (ARM_NUM_REGS (mode));