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avr.h (MOVE_MAX): Set value to 1.

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* 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
This commit is contained in:
Senthil Kumar Selvaraj 2015-12-17 19:55:39 +03:00 • committed by Denis Chertykov
parent 62f9ab0d43
commit 998f15f3b6
3 changed files with 51 additions and 2 deletions
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11
gcc/ChangeLog
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@ -1,3 +1,12 @@
2015-12-17 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
* 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.
2015-12-17 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* config.gcc: mark *-interix* as obsolete.
@ -349,7 +358,7 @@
* configure.ac: Remove checks for functions that exist in isl 0.13
or later.
* graphite-isl-ast-to-gimple.c: Remove #ifdefs and code for isl 0.12.
* graphite-optimize-isl.c: Same.
* graphite-optimize-isl.c: Same.
* graphite-poly.c: Same.
* graphite-sese-to-poly.c: Same.
* graphite.h: Add comment for isl 0.14.

25
gcc/config/avr/avr.c
View file

@ -2431,6 +2431,27 @@ avr_print_operand (FILE *file, rtx x, int code)
}
/* Implement TARGET_USE_BY_PIECES_INFRASTRUCTURE_P. */
/* Prefer sequence of loads/stores for moves of size upto
two - two pairs of load/store instructions are always better
than the 5 instruction sequence for a loop (1 instruction
for loop counter setup, and 4 for the body of the loop). */
static bool
avr_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT size,
unsigned int align ATTRIBUTE_UNUSED,
enum by_pieces_operation op,
bool speed_p)
{
if (op != MOVE_BY_PIECES || (speed_p && (size > (MOVE_MAX_PIECES))))
return default_use_by_pieces_infrastructure_p (size, align, op, speed_p);
return size <= (MOVE_MAX_PIECES);
}
/* Worker function for `NOTICE_UPDATE_CC'. */
/* Update the condition code in the INSN. */
@ -13763,6 +13784,10 @@ avr_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED, tree *arg,
#undef TARGET_PRINT_OPERAND_PUNCT_VALID_P
#define TARGET_PRINT_OPERAND_PUNCT_VALID_P avr_print_operand_punct_valid_p
#undef TARGET_USE_BY_PIECES_INFRASTRUCTURE_P
#define TARGET_USE_BY_PIECES_INFRASTRUCTURE_P \
avr_use_by_pieces_infrastructure_p
struct gcc_target targetm = TARGET_INITIALIZER;

17
gcc/config/avr/avr.h
View file

@ -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