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| author | Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> | 2015-12-17 19:55:39 +0300 |
|---|---|---|
| committer | Denis Chertykov <denisc@gcc.gnu.org> | 2015-12-17 19:55:39 +0300 |
| commit | 998f15f3b6a3ec8963e5c9864480d5c990099bc8 (patch) | |
| tree | 48f5a33661807489ccc663e4534c63ea77d68b2d /gcc/config/avr/avr.h | |
| parent | 62f9ab0d432554c33c8d9c449ebcae73b2789812 (diff) | |
| download | gcc-998f15f3b6a3ec8963e5c9864480d5c990099bc8.zip gcc-998f15f3b6a3ec8963e5c9864480d5c990099bc8.tar.gz gcc-998f15f3b6a3ec8963e5c9864480d5c990099bc8.tar.bz2 | |
avr.h (MOVE_MAX): Set value to 1.
* config/avr/avr.h (MOVE_MAX): Set value to 1.
(MOVE_MAX_PIECES): Define.
(MOVE_RATIO): Define.
* config/avr/avr.c (TARGET_USE_BY_PIECES_INFRASTRUCTURE_P):
Provide target hook.
(avr_use_by_pieces_infrastructure_p): New function.
From-SVN: r231782
Diffstat (limited to 'gcc/config/avr/avr.h')
| -rw-r--r-- | gcc/config/avr/avr.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/config/avr/avr.h b/gcc/config/avr/avr.h index 7439964..9872884 100644 --- a/gcc/config/avr/avr.h +++ b/gcc/config/avr/avr.h @@ -453,7 +453,22 @@ typedef struct avr_args #undef WORD_REGISTER_OPERATIONS -#define MOVE_MAX 4 +/* Can move only a single byte from memory to reg in a + single instruction. */ + +#define MOVE_MAX 1 + +/* Allow upto two bytes moves to occur using by_pieces + infrastructure */ + +#define MOVE_MAX_PIECES 2 + +/* Set MOVE_RATIO to 3 to allow memory moves upto 4 bytes to happen + by pieces when optimizing for speed, like it did when MOVE_MAX_PIECES + was 4. When optimizing for size, allow memory moves upto 2 bytes. + Also see avr_use_by_pieces_infrastructure_p. */ + +#define MOVE_RATIO(speed) ((speed) ? 3 : 2) #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 |