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| author | Ulrich Weigand <uweigand@de.ibm.com> | 2002-09-10 18:46:06 +0000 |
|---|---|---|
| committer | Ulrich Weigand <uweigand@gcc.gnu.org> | 2002-09-10 18:46:06 +0000 |
| commit | 33b679d10a7186845cba6c783c85a7fb841aeac9 (patch) | |
| tree | 6edb00d4528800f6f25e492330a490cd81428edd /gcc/config | |
| parent | a886956a40a502e3b7ae25e6b79195985c30a1bf (diff) | |
| download | gcc-33b679d10a7186845cba6c783c85a7fb841aeac9.zip gcc-33b679d10a7186845cba6c783c85a7fb841aeac9.tar.gz gcc-33b679d10a7186845cba6c783c85a7fb841aeac9.tar.bz2 | |
s390.h (MOVE_MAX): Define to correct value.
* config/s390/s390.h (MOVE_MAX): Define to correct value.
(MAX_MOVE_MAX): Define.
(MOVE_BY_PIECES_P): Define.
(CLEAR_BY_PIECES_P): Define.
From-SVN: r57010
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/s390/s390.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/gcc/config/s390/s390.h b/gcc/config/s390/s390.h index 781dc2e..40b94f0 100644 --- a/gcc/config/s390/s390.h +++ b/gcc/config/s390/s390.h @@ -1035,10 +1035,23 @@ CUMULATIVE_ARGS; #define DEFAULT_SIGNED_CHAR 0 -/* Max number of bytes we can move from memory to memory in one reasonably - fast instruction. */ +/* The maximum number of bytes that a single instruction can move quickly + between memory and registers or between two memory locations. */ -#define MOVE_MAX 256 +#define MOVE_MAX (TARGET_64BIT ? 16 : 8) +#define MAX_MOVE_MAX 16 + +/* Determine whether to use move_by_pieces or block move insn. */ + +#define MOVE_BY_PIECES_P(SIZE, ALIGN) \ + ( (SIZE) == 1 || (SIZE) == 2 || (SIZE) == 4 \ + || (TARGET_64BIT && (SIZE) == 8) ) + +/* Determine whether to use clear_by_pieces or block clear insn. */ + +#define CLEAR_BY_PIECES_P(SIZE, ALIGN) \ + ( (SIZE) == 1 || (SIZE) == 2 || (SIZE) == 4 \ + || (TARGET_64BIT && (SIZE) == 8) ) /* Nonzero if access to memory by bytes is slow and undesirable. */ |