Backport from mainline to arm-embedded branch r171096, r171251, r171379, r171632, r171978, r172297, r174035.
Committed. 2011-09-19 chengbin <bin.ch...@arm.com> Backport r174035 from mainline 2011-05-22 Tom de Vries <t...@codesourcery.com> PR middle-end/48689 * fold-const.c (fold_checksum_tree): Guard TREE_CHAIN use with CODE_CONTAINS_STRUCT (TS_COMMON). Backport r172297 from mainline 2011-04-11 Chung-Lin Tang <clt...@codesourcery.com> Richard Earnshaw <rearn...@arm.com> PR target/48250 * config/arm/arm.c (arm_legitimize_reload_address): Update cases to use sign-magnitude offsets. Reject unsupported unaligned cases. Add detailed description in comments. * config/arm/arm.md (reload_outdf): Disable for ARM mode; change condition from TARGET_32BIT to TARGET_ARM. Backport r171978 from mainline 2011-04-05 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. Backport r171632 from mainline 2011-03-28 Richard Sandiford <richard.sandif...@linaro.org> * builtins.c (expand_builtin_memset_args): Use gen_int_mode instead of GEN_INT. Backport r171379 from mainline 2011-03-23 Chung-Lin Tang <clt...@codesourcery.com> PR target/46934 * config/arm/arm.md (casesi): Use the gen_int_mode() function to subtract lower bound instead of GEN_INT(). Backport r171251 from mainline 2011-03-21 Daniel Jacobowitz <d...@codesourcery.com> * config/arm/unwind-arm.c (__gnu_unwind_pr_common): Correct test for barrier handlers. Backport r171096 from mainline 2011-03-17 Chung-Lin Tang <clt...@codesourcery.com> PR target/43872 * config/arm/arm.c (arm_get_frame_offsets): Adjust early return condition with !cfun->calls_alloca.