Reposting, with ChangeLog.
2011-04-01 Tom de Vries <t...@codesourcery.com>
PR target/43920
* config/arm/arm.h (BRANCH_COST): Set to 1 for Thumb-2 when optimizing
for size.
Index: gcc/config/arm/arm.h
===================================================================
--- gcc/config/arm/arm.h (revision 293961)
+++ gcc/config/arm/arm.h (revision 293962)
@@ -2201,7 +2201,8 @@ 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 && optimize_size ? 1 : 4) \
+ : (optimize > 0 ? 2 : 0))
/* Position Independent Code. */
/* We decide which register to use based on the compilation options and
