config.host (alpha*-*-linux*): Use driver-alpha.o and alpha/x-alpha.
2009-03-24 Arthur Loiret <aloiret@debian.org> * config.host (alpha*-*-linux*): Use driver-alpha.o and alpha/x-alpha. * config/alpha/linux.h (host_detect_local_cpu): Declare, add to EXTRA_SPEC_FUNCTIONS. (MCPU_MTUNE_NATIVE_SPECS, DRIVER_SELF_SPECS): New macros. * config/alpha/driver-alpha.c, config/alpha/x-alpha: New. * doc/invoke.texi (DEC Alpha Options): Document 'native' value for -march and -mtune options. From-SVN: r145028
This commit is contained in:
Arthur Loiret
Laurent Guerby
parent
92da2d44d6
commit
d94a427e80
6 changed files with 148 additions and 3 deletions
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@ -1,3 +1,14 @@
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2009-03-24 Arthur Loiret <aloiret@debian.org>
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* config.host (alpha*-*-linux*): Use driver-alpha.o and
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alpha/x-alpha.
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* config/alpha/linux.h (host_detect_local_cpu): Declare, add to
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EXTRA_SPEC_FUNCTIONS.
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(MCPU_MTUNE_NATIVE_SPECS, DRIVER_SELF_SPECS): New macros.
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* config/alpha/driver-alpha.c, config/alpha/x-alpha: New.
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* doc/invoke.texi (DEC Alpha Options): Document 'native' value for
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-march and -mtune options.
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2009-03-24 Ralf Corsépius <ralf.corsepius@rtems.org>
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* config/m68k/t-rtems: Add m5329 multilib.
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@ -94,6 +94,14 @@ case ${host} in
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esac
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case ${host} in
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alpha*-*-linux*)
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case ${target} in
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alpha*-*-linux*)
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host_extra_gcc_objs="driver-alpha.o"
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host_xmake_file="${host_xmake_file} alpha/x-alpha"
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;;
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esac
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;;
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i[34567]86-*-* \
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| x86_64-*-* )
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case ${target} in
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@ -112,9 +120,6 @@ case ${host} in
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;;
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esac
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;;
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esac
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case ${host} in
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rs6000-*-* \
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| powerpc*-*-* )
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case ${target} in
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100
gcc/config/alpha/driver-alpha.c
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100
gcc/config/alpha/driver-alpha.c
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@ -0,0 +1,100 @@
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/* Subroutines for the gcc driver.
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Copyright (C) 2009 Free Software Foundation, Inc.
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Contributed by Arthur Loiret <aloiret@debian.org>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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/* This will be called by the spec parser in gcc.c when it sees
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a %:local_cpu_detect(args) construct. Currently it will be called
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with either "cpu" or "tune" as argument depending on if -mcpu=native
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or -mtune=native is to be substituted.
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It returns a string containing new command line parameters to be
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put at the place of the above two options, depending on what CPU
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this is executed. E.g. "-mcpu=ev6" on an Alpha 21264 for
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-mcpu=native. If the routine can't detect a known processor,
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the -mcpu or -mtune option is discarded.
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ARGC and ARGV are set depending on the actual arguments given
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in the spec. */
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const char *
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host_detect_local_cpu (int argc, const char **argv)
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{
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const char *cpu = NULL;
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char buf[128];
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FILE *f;
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static const struct cpu_names {
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const char *const name;
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const char *const cpu;
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} cpu_names[] = {
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{ "EV79", "ev67" },
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{ "EV7", "ev67" },
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{ "EV69", "ev67" },
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{ "EV68CX", "ev67" },
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{ "EV68CB", "ev67" },
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{ "EV68AL", "ev67" },
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{ "EV67", "ev67" },
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{ "EV6", "ev6" },
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{ "PCA57", "pca56" },
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{ "PCA56", "pca56" },
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{ "EV56", "ev56" },
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{ "EV5", "ev5" },
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{ "LCA45", "ev45" },
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{ "EV45", "ev45" },
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{ "LCA4", "ev4" },
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{ "EV4", "ev4" },
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/* { "EV3", "ev3" }, */
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{ 0, 0 }
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};
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int i;
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if (argc < 1)
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return NULL;
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if (strcmp (argv[0], "cpu") && strcmp (argv[0], "tune"))
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return NULL;
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f = fopen ("/proc/cpuinfo", "r");
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if (f == NULL)
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return NULL;
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while (fgets (buf, sizeof (buf), f) != NULL)
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if (strncmp (buf, "cpu model", sizeof ("cpu model") - 1) == 0)
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{
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for (i = 0; cpu_names [i].name; i++)
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if (strstr (buf, cpu_names [i].name) != NULL)
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{
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cpu = cpu_names [i].cpu;
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break;
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}
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break;
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}
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fclose (f);
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if (cpu == NULL)
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return NULL;
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return concat ("-m", argv[0], "=", cpu, NULL);
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}
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@ -85,3 +85,19 @@ along with GCC; see the file COPYING3. If not see
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/* Define if long doubles should be mangled as 'g'. */
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#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
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/* -mcpu=native handling only makes sense with compiler running on
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an Alpha chip. */
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#if defined(__alpha__) || defined(__alpha)
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extern const char *host_detect_local_cpu (int argc, const char **argv);
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# define EXTRA_SPEC_FUNCTIONS \
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{ "local_cpu_detect", host_detect_local_cpu },
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# define MCPU_MTUNE_NATIVE_SPECS \
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" %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \
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" %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
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#else
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# define MCPU_MTUNE_NATIVE_SPECS ""
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#endif
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#define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
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3
gcc/config/alpha/x-alpha
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3
gcc/config/alpha/x-alpha
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@ -0,0 +1,3 @@
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driver-alpha.o: $(srcdir)/config/alpha/driver-alpha.c \
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$(CONFIG_H) $(SYSTEM_H)
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$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
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@ -10212,11 +10212,21 @@ Schedules as an EV6 and supports the BWX, FIX, and MAX extensions.
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Schedules as an EV6 and supports the BWX, CIX, FIX, and MAX extensions.
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@end table
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Native Linux/GNU toolchains also support the value @samp{native},
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which selects the best architecture option for the host processor.
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@option{-mcpu=native} has no effect if GCC does not recognize
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the processor.
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@item -mtune=@var{cpu_type}
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@opindex mtune
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Set only the instruction scheduling parameters for machine type
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@var{cpu_type}. The instruction set is not changed.
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Native Linux/GNU toolchains also support the value @samp{native},
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which selects the best architecture option for the host processor.
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@option{-mtune=native} has no effect if GCC does not recognize
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the processor.
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@item -mmemory-latency=@var{time}
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@opindex mmemory-latency
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Sets the latency the scheduler should assume for typical memory
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