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Set cache parameters for alpha 

From-SVN: r188794
This commit is contained in:
Richard Henderson 2012-06-19 14:08:03 -07:00 committed by Richard Henderson
parent 70f42967b3
commit f49278e65e
2 changed files with 59 additions and 17 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-06-19 Richard Henderson <rth@redhat.com>
* config/alpha/alpha.c: Include params.h.
(alpha_option_override): Initialize PARAM_L1_CACHE_LINE_SIZE,
PARAM_L1_CACHE_SIZE, PARAM_L2_CACHE_SIZE for the cpu tuning.
2012-06-19 Steven Bosscher <steven@gcc.gnu.org>
* doc/tm.texi.in (TARGET_OBJC_DECLARE_UNRESOLVED_CLASS_REFERENCE,

70
gcc/config/alpha/alpha.c
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@ -57,6 +57,7 @@ along with GCC; see the file COPYING3. If not see
#include "df.h"
#include "libfuncs.h"
#include "opts.h"
#include "params.h"
/* Specify which cpu to schedule for. */
enum processor_type alpha_tune;
@ -224,24 +225,40 @@ alpha_option_override (void)
const char *const name;
const enum processor_type processor;
const int flags;
const unsigned short line_size; /* in bytes */
const unsigned short l1_size; /* in kb. */
const unsigned short l2_size; /* in kb. */
} cpu_table[] = {
{ "ev4", PROCESSOR_EV4, 0 },
{ "ev45", PROCESSOR_EV4, 0 },
{ "21064", PROCESSOR_EV4, 0 },
{ "ev5", PROCESSOR_EV5, 0 },
{ "21164", PROCESSOR_EV5, 0 },
{ "ev56", PROCESSOR_EV5, MASK_BWX },
{ "21164a", PROCESSOR_EV5, MASK_BWX },
{ "pca56", PROCESSOR_EV5, MASK_BWX|MASK_MAX },
{ "21164PC",PROCESSOR_EV5, MASK_BWX|MASK_MAX },
{ "21164pc",PROCESSOR_EV5, MASK_BWX|MASK_MAX },
{ "ev6", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX },
{ "21264", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX },
{ "ev67", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX|MASK_CIX },
{ "21264a", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX|MASK_CIX }
/* EV4/LCA45 had 8k L1 caches; EV45 had 16k L1 caches.
EV4/EV45 had 128k to 16M 32-byte direct Bcache. LCA45
had 64k to 8M 8-byte direct Bcache. */
{ "ev4", PROCESSOR_EV4, 0, 32, 8, 8*1024 },
{ "21064", PROCESSOR_EV4, 0, 32, 8, 8*1024 },
{ "ev45", PROCESSOR_EV4, 0, 32, 16, 16*1024 },
/* EV5 or EV56 had 8k 32 byte L1, 96k 32 or 64 byte L2,
and 1M to 16M 64 byte L3 (not modeled).
PCA56 had 16k 64-byte cache; PCA57 had 32k Icache.
PCA56 had 8k 64-byte cache; PCA57 had 16k Dcache. */
{ "ev5", PROCESSOR_EV5, 0, 32, 8, 96 },
{ "21164", PROCESSOR_EV5, 0, 32, 8, 96 },
{ "ev56", PROCESSOR_EV5, MASK_BWX, 32, 8, 96 },
{ "21164a", PROCESSOR_EV5, MASK_BWX, 32, 8, 96 },
{ "pca56", PROCESSOR_EV5, MASK_BWX|MASK_MAX, 64, 16, 4*1024 },
{ "21164PC",PROCESSOR_EV5, MASK_BWX|MASK_MAX, 64, 16, 4*1024 },
{ "21164pc",PROCESSOR_EV5, MASK_BWX|MASK_MAX, 64, 16, 4*1024 },
/* EV6 had 64k 64 byte L1, 1M to 16M Bcache. */
{ "ev6", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX, 64, 64, 16*1024 },
{ "21264", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX, 64, 64, 16*1024 },
{ "ev67", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX|MASK_CIX,
64, 64, 16*1024 },
{ "21264a", PROCESSOR_EV6, MASK_BWX|MASK_MAX|MASK_FIX|MASK_CIX,
64, 64, 16*1024 }
};
int const ct_size = ARRAY_SIZE (cpu_table);
int line_size = 0, l1_size = 0, l2_size = 0;
int i;
#ifdef SUBTARGET_OVERRIDE_OPTIONS
@ -314,9 +331,12 @@ alpha_option_override (void)
for (i = 0; i < ct_size; i++)
if (! strcmp (alpha_cpu_string, cpu_table [i].name))
{
alpha_tune = alpha_cpu = cpu_table [i].processor;
alpha_tune = alpha_cpu = cpu_table[i].processor;
line_size = cpu_table[i].line_size;
l1_size = cpu_table[i].l1_size;
l2_size = cpu_table[i].l2_size;
target_flags &= ~ (MASK_BWX | MASK_MAX | MASK_FIX | MASK_CIX);
target_flags |= cpu_table [i].flags;
target_flags |= cpu_table[i].flags;
break;
}
if (i == ct_size)
@ -328,13 +348,29 @@ alpha_option_override (void)
for (i = 0; i < ct_size; i++)
if (! strcmp (alpha_tune_string, cpu_table [i].name))
{
alpha_tune = cpu_table [i].processor;
alpha_tune = cpu_table[i].processor;
line_size = cpu_table[i].line_size;
l1_size = cpu_table[i].l1_size;
l2_size = cpu_table[i].l2_size;
break;
}
if (i == ct_size)
error ("bad value %qs for -mtune switch", alpha_tune_string);
}
if (line_size)
maybe_set_param_value (PARAM_L1_CACHE_LINE_SIZE, line_size,
global_options.x_param_values,
global_options_set.x_param_values);
if (l1_size)
maybe_set_param_value (PARAM_L1_CACHE_SIZE, l1_size,
global_options.x_param_values,
global_options_set.x_param_values);
if (l2_size)
maybe_set_param_value (PARAM_L2_CACHE_SIZE, l2_size,
global_options.x_param_values,
global_options_set.x_param_values);
/* Do some sanity checks on the above options. */
if ((alpha_fptm == ALPHA_FPTM_SU || alpha_fptm == ALPHA_FPTM_SUI)