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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2013-11-09 11:42:16 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2013-11-09 11:42:16 +0000 |
| commit | 1d0216c8b79931cffcc5599b8a9a4f6eaf86d2b7 (patch) | |
| tree | 5b96e2c7a588193d1b4019f9316a1ca13b8376ce /gcc/config/arc/arc.c | |
| parent | 12929715b124071e523316c28897c8a05083cf12 (diff) | |
| download | gcc-1d0216c8b79931cffcc5599b8a9a4f6eaf86d2b7.zip gcc-1d0216c8b79931cffcc5599b8a9a4f6eaf86d2b7.tar.gz gcc-1d0216c8b79931cffcc5599b8a9a4f6eaf86d2b7.tar.bz2 | |
target.def (can_use_doloop_p): New hook.
gcc/
* target.def (can_use_doloop_p): New hook.
* doc/tm.texi.in (TARGET_CAN_USE_DOLOOP_P): Add.
* doc/tm.texi: Regenerate.
* doc/md.texi (doloop_begin, doloop_end): Update documentation.
* hooks.h (hook_bool_dint_dint_uint_true): Declare.
* hooks.c (hook_bool_dint_dint_uint_true): New function.
* targhooks.h (can_use_doloop_if_innermost): Declare.
* targhooks.c (can_use_doloop_if_innermost): New function.
* target.h: Include double-int.h.
* loop-doloop.c (doloop_optimize): Call targetm.can_use_doloop_p.
Remove iteration count, maximum iteration count, loop depth and
enter-at-top inputs from doloop_begin and doloop_end.
* config/arc/arc.md (doloop_begin, doloop_end): Update for new
interface.
* config/arc/arc.c (arc_can_use_doloop_p): New function.
(TARGET_CAN_USE_DOLOOP_P): Define.
* config/arm/thumb2.md (doloop_end): Update for new interface.
* config/arm/arm.c (TARGET_CAN_USE_DOLOOP_P): Define.
* config/bfin/bfin.md (doloop_end): Update for new interface.
* config/bfin/bfin.c (bfin_can_use_doloop_p): New function.
(TARGET_CAN_USE_DOLOOP_P): Define.
* config/c6x/c6x.md (doloop_end): Update for new interface.
* config/ia64/ia64.md (doloop_end): Update for new interface.
* config/ia64/ia64.c (TARGET_CAN_USE_DOLOOP_P): Define.
* config/mep/mep.md (doloop_begin, doloop_end): Update for new
interface.
* config/mep/mep.c (mep_emit_doloop): Likewise.
(TARGET_CAN_USE_DOLOOP_P): Define.
* config/rs6000/rs6000.md (doloop_end): Update for new interface.
* config/rs6000/rs6000.c (TARGET_CAN_USE_DOLOOP_P): Define.
* config/s390/s390.md (doloop_end): Update for new interface.
* config/sh/sh.md (doloop_end): Likewise.
* config/spu/spu.md (doloop_end): Likewise.
* config/spu/spu.c (TARGET_CAN_USE_DOLOOP_P): Define.
* config/tilegx/tilegx.md (doloop_end): Update for new interface.
* config/tilegx/tilegx.c (TARGET_CAN_USE_DOLOOP_P): Define.
* config/tilepro/tilepro.md (doloop_end): Update for new interface.
* config/tilepro/tilepro.c (TARGET_CAN_USE_DOLOOP_P): Define.
* config/v850/v850.md (doloop_begin, doloop_end): Update for new
interface.
* config/v850/v850.c (TARGET_CAN_USE_DOLOOP_P): Define.
From-SVN: r204614
Diffstat (limited to 'gcc/config/arc/arc.c')
| -rw-r--r-- | gcc/config/arc/arc.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c index 1e0c25e..7b1853b 100644 --- a/gcc/config/arc/arc.c +++ b/gcc/config/arc/arc.c @@ -388,6 +388,7 @@ static bool arc_return_in_memory (const_tree, const_tree); static void arc_init_simd_builtins (void); static bool arc_vector_mode_supported_p (enum machine_mode); +static bool arc_can_use_doloop_p (double_int, double_int, unsigned int, bool); static const char *arc_invalid_within_doloop (const_rtx); static void output_short_suffix (FILE *file); @@ -493,6 +494,9 @@ static void arc_finalize_pic (void); #undef TARGET_VECTOR_MODE_SUPPORTED_P #define TARGET_VECTOR_MODE_SUPPORTED_P arc_vector_mode_supported_p +#undef TARGET_CAN_USE_DOLOOP_P +#define TARGET_CAN_USE_DOLOOP_P arc_can_use_doloop_p + #undef TARGET_INVALID_WITHIN_DOLOOP #define TARGET_INVALID_WITHIN_DOLOOP arc_invalid_within_doloop @@ -5638,6 +5642,23 @@ arc_pass_by_reference (cumulative_args_t ca_v ATTRIBUTE_UNUSED, || TREE_ADDRESSABLE (type))); } +/* Implement TARGET_CAN_USE_DOLOOP_P. */ + +static bool +arc_can_use_doloop_p (double_int iterations, double_int, + unsigned int loop_depth, bool entered_at_top) +{ + if (loop_depth > 1) + return false; + /* Setting up the loop with two sr instructions costs 6 cycles. */ + if (TARGET_ARC700 + && !entered_at_top + && iterations.high == 0 + && iterations.low > 0 + && iterations.low <= (flag_pic ? 6 : 3)) + return false; + return true; +} /* NULL if INSN insn is valid within a low-overhead loop. Otherwise return why doloop cannot be applied. */ |