Merge from Sourcery G++ 4.4:
	
	2009-08-26  Kazu Hirata  <kazu@codesourcery.com>

	Issue #6089
	gcc/
	* config/arm/arm.c (arm_rtx_costs_1): Don't special case for
	Thumb-2 in the MINUS case.

2010-07-26  Julian Brown  <julian@codesourcery.com>

 	Backport from FSF mainline:
 
 	gcc/

=== modified file 'gcc/config/arm/arm.c'
--- old/gcc/config/arm/arm.c	2010-08-12 13:35:39 +0000
+++ new/gcc/config/arm/arm.c	2010-08-12 14:08:29 +0000
@@ -6494,23 +6494,6 @@
       return true;
 
     case MINUS:
-      if (TARGET_THUMB2)
-	{
-	  if (GET_MODE_CLASS (mode) == MODE_FLOAT)
-	    {
-	      if (TARGET_HARD_FLOAT && (mode == SFmode || mode == DFmode))
-		*total = COSTS_N_INSNS (1);
-	      else
-		*total = COSTS_N_INSNS (20);
-	    }
-	  else
-	    *total = COSTS_N_INSNS (ARM_NUM_REGS (mode));
-	  /* Thumb2 does not have RSB, so all arguments must be
-	     registers (subtracting a constant is canonicalized as
-	     addition of the negated constant).  */
-	  return false;
-	}
-
       if (mode == DImode)
 	{
 	  *total = COSTS_N_INSNS (ARM_NUM_REGS (mode));