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| author | Jan Hubicka <jh@suse.cz> | 2011-05-07 16:39:40 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2011-05-07 14:39:40 +0000 |
| commit | 5d0878e70dc34446015c4f2908869ad9e85cab8c (patch) | |
| tree | 1433edbebb9da3f76e790ac94430cd03412db0e6 | |
| parent | 58696ce5e418de14f1c79f3f62b523055ad3ea2c (diff) | |
| download | gcc-5d0878e70dc34446015c4f2908869ad9e85cab8c.zip gcc-5d0878e70dc34446015c4f2908869ad9e85cab8c.tar.gz gcc-5d0878e70dc34446015c4f2908869ad9e85cab8c.tar.bz2 | |
i386.h (ix86_tune_indices): Add X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL.
* i386.h (ix86_tune_indices): Add X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL.
(TARGET_SOFTWARE_PREFETCHING_BENEFICIAL): New macor.
* i386.c (initial_ix86_tune_features): Add X86_SOFTARE_PREFETCHING_BENEFICIAL.
(software_prefetching_beneficial_p): Remove predicate.
(ix86_option_override_internal): Use new macro.
From-SVN: r173533
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 28 | ||||
| -rw-r--r-- | gcc/config/i386/i386.h | 3 |
3 files changed, 17 insertions, 22 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b239163..6534bbc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,13 @@ 2011-05-06 Jan Hubicka <jh@suse.cz> + * i386.h (ix86_tune_indices): Add X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL. + (TARGET_SOFTWARE_PREFETCHING_BENEFICIAL): New macor. + * i386.c (initial_ix86_tune_features): Add X86_SOFTARE_PREFETCHING_BENEFICIAL. + (software_prefetching_beneficial_p): Remove predicate. + (ix86_option_override_internal): Use new macro. + +2011-05-06 Jan Hubicka <jh@suse.cz> + * ipa-inline.c (update_callee_keys): Don't reset node growth cache. 2011-05-06 Jan Hubicka <jh@suse.cz> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 786bc6d..7b0afb1 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -2083,6 +2083,11 @@ static unsigned int initial_ix86_tune_features[X86_TUNE_LAST] = { /* X86_TUNE_VECTORIZE_DOUBLE: Enable double precision vector instructions. */ ~m_ATOM, + + /* X86_SOFTARE_PREFETCHING_BENEFICIAL: Enable software prefetching + at -O3. For the moment, the prefetching seems badly tuned for Intel + chips. */ + m_K6_GEODE | m_AMD_MULTIPLE }; /* Feature tests against the various architecture variations. */ @@ -3257,27 +3262,6 @@ ix86_target_string (int isa, int flags, const char *arch, const char *tune, return ret; } -/* Return TRUE if software prefetching is beneficial for the - given CPU. */ - -static bool -software_prefetching_beneficial_p (void) -{ - switch (ix86_tune) - { - case PROCESSOR_GEODE: - case PROCESSOR_K6: - case PROCESSOR_ATHLON: - case PROCESSOR_K8: - case PROCESSOR_AMDFAM10: - case PROCESSOR_BTVER1: - return true; - - default: - return false; - } -} - /* Return true, if profiling code should be emitted before prologue. Otherwise it returns false. Note: For x86 with "hotfix" it is sorried. */ @@ -4205,7 +4189,7 @@ ix86_option_override_internal (bool main_args_p) if (flag_prefetch_loop_arrays < 0 && HAVE_prefetch && optimize >= 3 - && software_prefetching_beneficial_p ()) + && TARGET_SOFTWARE_PREFETCHING_BENEFICIAL) flag_prefetch_loop_arrays = 1; /* If using typedef char *va_list, signal that __builtin_va_start (&ap, 0) diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index 5baa2b8..4137ecc 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -322,6 +322,7 @@ enum ix86_tune_indices { X86_TUNE_FUSE_CMP_AND_BRANCH, X86_TUNE_OPT_AGU, X86_TUNE_VECTORIZE_DOUBLE, + X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL, X86_TUNE_LAST }; @@ -418,6 +419,8 @@ extern unsigned char ix86_tune_features[X86_TUNE_LAST]; #define TARGET_OPT_AGU ix86_tune_features[X86_TUNE_OPT_AGU] #define TARGET_VECTORIZE_DOUBLE \ ix86_tune_features[X86_TUNE_VECTORIZE_DOUBLE] +#define TARGET_SOFTWARE_PREFETCHING_BENEFICIAL \ + ix86_tune_features[X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL] /* Feature tests against the various architecture variations. */ enum ix86_arch_indices { |