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| author | Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org> | 2017-06-16 09:30:52 +0000 |
|---|---|---|
| committer | Maxim Kuvyrkov <mkuvyrkov@gcc.gnu.org> | 2017-06-16 09:30:52 +0000 |
| commit | 16b2cafd0088500dc098121ed6d1aa622f1dc8a5 (patch) | |
| tree | 66c928fe285012cb89034dfe86d525108ff01ac2 /gcc | |
| parent | 9d2c6e2eb72324b10160ce1117a8ab600be94bad (diff) | |
| download | gcc-16b2cafd0088500dc098121ed6d1aa622f1dc8a5.zip gcc-16b2cafd0088500dc098121ed6d1aa622f1dc8a5.tar.gz gcc-16b2cafd0088500dc098121ed6d1aa622f1dc8a5.tar.bz2 | |
Enable -fprefetch-loop-arrays at given optimization level.
* config/aarch64/aarch64.c (aarch64_override_options_internal):
Set flag_prefetch_loop_arrays according to tuning data.
Change-Id: Id41411e671e0a55dc7268e0ad0a4e8ff1421c90a
From-SVN: r249241
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64-protos.h | 1 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 21 |
3 files changed, 23 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a78e736..0ed2ac1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2017-06-16 Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org> + * config/aarch64/aarch64.c (aarch64_override_options_internal): + Set flag_prefetch_loop_arrays according to tuning data. + +2017-06-16 Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org> + * config/aarch64/aarch64-protos.h (struct cpu_prefetch_tune): New tune structure. (struct tune_params): Use cpu_prefetch_tune instead of cache_line_size. diff --git a/gcc/config/aarch64/aarch64-protos.h b/gcc/config/aarch64/aarch64-protos.h index bb06139..bfe44a7 100644 --- a/gcc/config/aarch64/aarch64-protos.h +++ b/gcc/config/aarch64/aarch64-protos.h @@ -210,6 +210,7 @@ struct cpu_prefetch_tune const int l1_cache_size; const int l1_cache_line_size; const int l2_cache_size; + const int default_opt_level; }; struct tune_params diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index e3296c0..324a0f1 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -532,7 +532,8 @@ static const cpu_prefetch_tune generic_prefetch_tune = 0, /* num_slots */ -1, /* l1_cache_size */ -1, /* l1_cache_line_size */ - -1 /* l2_cache_size */ + -1, /* l2_cache_size */ + -1 /* default_opt_level */ }; static const cpu_prefetch_tune exynosm1_prefetch_tune = @@ -540,7 +541,8 @@ static const cpu_prefetch_tune exynosm1_prefetch_tune = 0, /* num_slots */ -1, /* l1_cache_size */ 64, /* l1_cache_line_size */ - -1 /* l2_cache_size */ + -1, /* l2_cache_size */ + -1 /* default_opt_level */ }; static const cpu_prefetch_tune qdf24xx_prefetch_tune = @@ -548,7 +550,8 @@ static const cpu_prefetch_tune qdf24xx_prefetch_tune = 0, /* num_slots */ -1, /* l1_cache_size */ 64, /* l1_cache_line_size */ - -1 /* l2_cache_size */ + -1, /* l2_cache_size */ + -1 /* default_opt_level */ }; static const cpu_prefetch_tune thunderx2t99_prefetch_tune = @@ -556,7 +559,8 @@ static const cpu_prefetch_tune thunderx2t99_prefetch_tune = 0, /* num_slots */ -1, /* l1_cache_size */ 64, /* l1_cache_line_size */ - -1 /* l2_cache_size */ + -1, /* l2_cache_size */ + -1 /* default_opt_level */ }; static const struct tune_params generic_tunings = @@ -8806,6 +8810,15 @@ aarch64_override_options_internal (struct gcc_options *opts) opts->x_param_values, global_options_set.x_param_values); + /* Enable sw prefetching at specified optimization level for + CPUS that have prefetch. Lower optimization level threshold by 1 + when profiling is enabled. */ + if (opts->x_flag_prefetch_loop_arrays < 0 + && !opts->x_optimize_size + && aarch64_tune_params.prefetch->default_opt_level >= 0 + && opts->x_optimize >= aarch64_tune_params.prefetch->default_opt_level) + opts->x_flag_prefetch_loop_arrays = 1; + aarch64_override_options_after_change_1 (opts); } |