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Avoid legacy instruction penalties on x86

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Justine Tunney 2024-07-31 01:02:24 -07:00
parent 1fba310e22
commit 8d8aecb6d9
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GPG key ID: BE714B4575D6E328
16 changed files with 199 additions and 158 deletions
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60
libc/calls/BUILD.mk
View file

@ -154,6 +154,66 @@ o/$(MODE)/libc/calls/sigcrashsig.o: private \
CFLAGS += \
-Os
# avoid legacy sse decoding penalty on avx systems
o//libc/calls/cfmakeraw.o \
o//libc/calls/clock_gettime-xnu.o \
o//libc/calls/CPU_AND.o \
o//libc/calls/CPU_OR.o \
o//libc/calls/CPU_XOR.o \
o//libc/calls/dl_iterate_phdr.o \
o//libc/calls/dup-nt.o \
o//libc/calls/fcntl-nt.o \
o//libc/calls/flock-nt.o \
o//libc/calls/fstatfs-nt.o \
o//libc/calls/fstat-nt.o \
o//libc/calls/futimesat.o \
o//libc/calls/futimes.o \
o//libc/calls/getrlimit.o \
o//libc/calls/gettimeofday.o \
o//libc/calls/ioctl.o \
o//libc/calls/lutimes.o \
o//libc/calls/metaflock.o \
o//libc/calls/ntaccesscheck.o \
o//libc/calls/ntspawn.o \
o//libc/calls/open-nt.o \
o//libc/calls/pledge-linux.o \
o//libc/calls/ppoll.o \
o//libc/calls/preadv.o \
o//libc/calls/pselect.o \
o//libc/calls/pwritev.o \
o//libc/calls/read-nt.o \
o//libc/calls/readv.o \
o//libc/calls/readwrite-nt.o \
o//libc/calls/releasefd.o \
o//libc/calls/select.o \
o//libc/calls/sigaction.o \
o//libc/calls/sigenter-freebsd.o \
o//libc/calls/sigenter-netbsd.o \
o//libc/calls/sigenter-openbsd.o \
o//libc/calls/sigenter-xnu.o \
o//libc/calls/sigignore.o \
o//libc/calls/siginfo2cosmo.o \
o//libc/calls/signal.o \
o//libc/calls/sig.o \
o//libc/calls/sigtimedwait.o \
o//libc/calls/stat2cosmo.o \
o//libc/calls/statfs2cosmo.o \
o//libc/calls/statfs2statvfs.o \
o//libc/calls/tcgetattr-nt.o \
o//libc/calls/tcgetattr.o \
o//libc/calls/tcgetwinsize-nt.o \
o//libc/calls/tcsetattr-nt.o \
o//libc/calls/tcsetwinsize-nt.o \
o//libc/calls/termios2host.o \
o//libc/calls/timespec_sleep.o \
o//libc/calls/uname.o \
o//libc/calls/utimensat-old.o \
o//libc/calls/utimes.o \
o//libc/calls/winexec.o \
o//libc/calls/writev.o: private \
COPTS += \
-mgeneral-regs-only
# these assembly files are safe to build on aarch64
o/$(MODE)/libc/calls/getcontext.o: libc/calls/getcontext.S
@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -c $<

8
libc/intrin/BUILD.mk
View file

@ -97,6 +97,14 @@ o/$(MODE)/libc/intrin/x86.o: private \
-fpatchable-function-entry=0 \
-Os
# avoid the legacy sse decoding penalty on avx systems
o//libc/intrin/dll.o \
o//libc/intrin/fds.o \
o//libc/intrin/mmap.o \
o//libc/intrin/demangle.o: private \
CFLAGS += \
-mgeneral-regs-only
# these assembly files are safe to build on aarch64
o/$(MODE)/libc/intrin/aarch64/%.o: libc/intrin/aarch64/%.S
@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -c $<

25
libc/str/uselocale.c
View file

@ -1,25 +0,0 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/locale.h"
#include "libc/sysv/errfuns.h"
locale_t uselocale(locale_t l) {
// TODO: implement me!
return 0;
}

1
libc/testlib/BUILD.mk
View file

@ -22,6 +22,7 @@ LIBC_TESTLIB_A_ASSETS = \
LIBC_TESTLIB_A_HDRS = \
libc/testlib/aspect.internal.h \
libc/testlib/bench.h \
libc/testlib/benchmark.h \
libc/testlib/blocktronics.h \
libc/testlib/ezbench.h \
libc/testlib/fastrandomstring.h \

26
libc/testlib/benchmark.h Normal file
View file

@ -0,0 +1,26 @@
#ifndef COSMOPOLITAN_LIBC_TESTLIB_BENCHMARK_H_
#define COSMOPOLITAN_LIBC_TESTLIB_BENCHMARK_H_
#include "libc/calls/struct/timespec.h"
#include "libc/stdio/stdio.h"
COSMOPOLITAN_C_START_
#define BENCHMARK(ITERATIONS, WORK_PER_RUN, CODE) \
do { \
struct timespec start = timespec_real(); \
for (int __i = 0; __i < ITERATIONS; ++__i) { \
asm volatile("" ::: "memory"); \
CODE; \
} \
long long work = ((WORK_PER_RUN) ? (WORK_PER_RUN) : 1) * (ITERATIONS); \
double nanos = \
(timespec_tonanos(timespec_sub(timespec_real(), start)) + work - 1) / \
(double)work; \
if (nanos < 1000) { \
printf("%10g ns %2dx %s\n", nanos, (ITERATIONS), #CODE); \
} else { \
printf("%10lld ns %2dx %s\n", (long long)nanos, (ITERATIONS), #CODE); \
} \
} while (0)
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_LIBC_TESTLIB_BENCHMARK_H_ */