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i386.h (ix86_tune_indices): Add X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL.

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* 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
This commit is contained in:
Jan Hubicka 2011-05-07 16:39:40 +02:00 committed by Jan Hubicka
parent 58696ce5e4
commit 5d0878e70d
3 changed files with 17 additions and 22 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
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.

28
gcc/config/i386/i386.c
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@ -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)

3
gcc/config/i386/i386.h
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@ -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 {