[backport r171978 from gcc-4.7/trunk, PR43920 patch 4/n <mikpe@it.uu.se>]

gcc/

2011-04-05  Tom de Vries  <tom@codesourcery.com>

	PR target/43920
	* config/arm/arm.h (BRANCH_COST): Set to 1 for Thumb-2 when optimizing
	for size.

--- gcc-4.6.0/gcc/config/arm/arm.h.~1~	2011-01-29 04:20:57.000000000 +0100
+++ gcc-4.6.0/gcc/config/arm/arm.h	2011-06-19 22:21:43.000000000 +0200
@@ -2039,7 +2039,8 @@ typedef struct
 /* Try to generate sequences that don't involve branches, we can then use
    conditional instructions */
 #define BRANCH_COST(speed_p, predictable_p) \
-  (TARGET_32BIT ? 4 : (optimize > 0 ? 2 : 0))
+  (TARGET_32BIT ? (TARGET_THUMB2 && !speed_p ? 1 : 4) \
+		: (optimize > 0 ? 2 : 0))
 
 /* Position Independent Code.  */
 /* We decide which register to use based on the compilation options and