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| author | Georg-Johann Lay <avr@gjlay.de> | 2017-01-16 09:48:45 +0000 |
|---|---|---|
| committer | Georg-Johann Lay <gjl@gcc.gnu.org> | 2017-01-16 09:48:45 +0000 |
| commit | 1bcd0192bf2b9adbdf0fab7ab8f245d6f68aea71 (patch) | |
| tree | e9c7c025366911ab8a6c40d6d1f858fa20878934 /gcc | |
| parent | a99ce94c8acf996340013b836f45f81dc64a3f44 (diff) | |
| download | gcc-1bcd0192bf2b9adbdf0fab7ab8f245d6f68aea71.zip gcc-1bcd0192bf2b9adbdf0fab7ab8f245d6f68aea71.tar.gz gcc-1bcd0192bf2b9adbdf0fab7ab8f245d6f68aea71.tar.bz2 | |
avr.h (BRANCH_COST): Increase by 4.
gcc/
* config/avr/avr.h (BRANCH_COST) [reload_completed]: Increase by 4.
From-SVN: r244488
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/avr/avr.h | 7 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cdc423a..0df0bbc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2017-01-16 Georg-Johann Lay <avr@gjlay.de> + + * config/avr/avr.h (BRANCH_COST) [reload_completed]: Increase by 4. + 2017-01-15 Uros Bizjak <ubizjak@gmail.com> * config/i386/i386.c (ix86_legitimate_combined_insn): Do not diff --git a/gcc/config/avr/avr.h b/gcc/config/avr/avr.h index c78d4e7..3dfa8c3 100644 --- a/gcc/config/avr/avr.h +++ b/gcc/config/avr/avr.h @@ -360,7 +360,12 @@ typedef struct avr_args } \ } while (0) -#define BRANCH_COST(speed_p, predictable_p) avr_branch_cost +/* We increase branch costs after reload in order to keep basic-block + reordering from introducing out-of-line jumps and to prefer fall-through + edges instead. The default branch costs are 0, mainly because otherwise + do_store_flag might come up with bloated code. */ +#define BRANCH_COST(speed_p, predictable_p) \ + (avr_branch_cost + (reload_completed ? 4 : 0)) #define SLOW_BYTE_ACCESS 0 |