mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
184 lines
6.6 KiB
C
184 lines
6.6 KiB
C
/*-*- 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 2023 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/calls/calls.h"
|
|
#include "libc/nexgen32e/x86feature.h"
|
|
#include "libc/nexgen32e/x86info.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "third_party/getopt/getopt.internal.h"
|
|
|
|
/**
|
|
* @fileoverview Command for printing `-march=native` flags.
|
|
*
|
|
* In recent years (2023) compilers have decided to remove support for
|
|
* the `-march=native` flag, even on x86. That's unfortunate, since as
|
|
* we can see below, grokking all the various microarchitecture is not
|
|
* something a compiler should reasonably expect from users especially
|
|
* not for a flag as important as this one, which can have a night and
|
|
* day impact for apps that do scientific computing.
|
|
*
|
|
* This is a tiny program, that makes it easy for shell scripts to get
|
|
* these flags.
|
|
*/
|
|
|
|
#define VERSION \
|
|
"-march=native flag printer v0.1\n" \
|
|
"copyright 2023 justine alexandra roberts tunney\n"
|
|
|
|
#define USAGE \
|
|
"usage: march-native.com [-hvc]\n" \
|
|
" -h show help\n" \
|
|
" -v show version\n" \
|
|
" -c assume we're using clang (not gcc)\n"
|
|
|
|
static bool isclang;
|
|
|
|
static void GetOpts(int argc, char *argv[]) {
|
|
int opt;
|
|
while ((opt = getopt(argc, argv, "hvc")) != -1) {
|
|
switch (opt) {
|
|
case 'c':
|
|
isclang = true;
|
|
break;
|
|
case 'v':
|
|
tinyprint(1, VERSION, NULL);
|
|
exit(0);
|
|
case 'h':
|
|
tinyprint(1, VERSION, USAGE, NULL);
|
|
exit(0);
|
|
default:
|
|
tinyprint(2, VERSION, USAGE, NULL);
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Puts(const char *s) {
|
|
tinyprint(1, s, "\n", NULL);
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
GetOpts(argc, argv);
|
|
#ifdef __x86_64__
|
|
struct X86ProcessorModel *model;
|
|
if (X86_HAVE(XOP)) Puts("-mxop");
|
|
if (X86_HAVE(SSE4A)) Puts("-msse4a");
|
|
if (X86_HAVE(SSE3)) Puts("-msse3");
|
|
if (X86_HAVE(SSSE3)) Puts("-mssse3");
|
|
if (X86_HAVE(SSE4_1)) Puts("-msse4.1");
|
|
if (X86_HAVE(SSE4_2)) Puts("-msse4.2");
|
|
if (X86_HAVE(AVX)) Puts("-mavx");
|
|
if (X86_HAVE(AVX2)) {
|
|
Puts("-mavx2");
|
|
if (!isclang) {
|
|
Puts("-msse2avx");
|
|
Puts("-Wa,-msse2avx");
|
|
}
|
|
}
|
|
if (X86_HAVE(AVX512F)) Puts("-mavx512f");
|
|
if (X86_HAVE(AVX512PF)) Puts("-mavx512pf");
|
|
if (X86_HAVE(AVX512ER)) Puts("-mavx512er");
|
|
if (X86_HAVE(AVX512CD)) Puts("-mavx512cd");
|
|
if (X86_HAVE(AVX512VL)) Puts("-mavx512vl");
|
|
if (X86_HAVE(AVX512BW)) Puts("-mavx512bw");
|
|
if (X86_HAVE(AVX512DQ)) Puts("-mavx512dq");
|
|
if (X86_HAVE(AVX512IFMA)) Puts("-mavx512ifma");
|
|
if (X86_HAVE(AVX512VBMI)) Puts("-mavx512vbmi");
|
|
if (X86_HAVE(SHA)) Puts("-msha");
|
|
if (X86_HAVE(AES)) Puts("-maes");
|
|
if (X86_HAVE(VAES)) Puts("-mvaes");
|
|
if (X86_HAVE(PCLMUL)) Puts("-mpclmul");
|
|
if (X86_HAVE(FSGSBASE)) Puts("-mfsgsbase");
|
|
if (X86_HAVE(F16C)) Puts("-mf16c");
|
|
if (X86_HAVE(FMA)) Puts("-mfma");
|
|
if (X86_HAVE(POPCNT)) Puts("-mpopcnt");
|
|
if (X86_HAVE(BMI)) Puts("-mbmi");
|
|
if (X86_HAVE(BMI2)) Puts("-mbmi2");
|
|
if (X86_HAVE(ADX)) Puts("-madx");
|
|
if (X86_HAVE(FXSR)) Puts("-mfxsr");
|
|
if ((model = (void *)getx86processormodel(kX86ProcessorModelKey))) {
|
|
switch (model->march) {
|
|
case X86_MARCH_CORE2:
|
|
Puts("-march=core2");
|
|
break;
|
|
case X86_MARCH_NEHALEM:
|
|
Puts("-march=nehalem");
|
|
break;
|
|
case X86_MARCH_WESTMERE:
|
|
Puts("-march=westmere");
|
|
break;
|
|
case X86_MARCH_SANDYBRIDGE:
|
|
Puts("-march=sandybridge");
|
|
break;
|
|
case X86_MARCH_IVYBRIDGE:
|
|
Puts("-march=ivybridge");
|
|
break;
|
|
case X86_MARCH_HASWELL:
|
|
Puts("-march=haswell");
|
|
break;
|
|
case X86_MARCH_BROADWELL:
|
|
Puts("-march=broadwell");
|
|
break;
|
|
case X86_MARCH_SKYLAKE:
|
|
case X86_MARCH_KABYLAKE:
|
|
Puts("-march=skylake");
|
|
break;
|
|
case X86_MARCH_CANNONLAKE:
|
|
Puts("-march=cannonlake");
|
|
break;
|
|
case X86_MARCH_ICELAKE:
|
|
if (model->grade >= X86_GRADE_SERVER) {
|
|
Puts("-march=icelake-server");
|
|
} else {
|
|
Puts("-march=icelake-client");
|
|
}
|
|
break;
|
|
case X86_MARCH_TIGERLAKE:
|
|
Puts("-march=tigerlake");
|
|
break;
|
|
case X86_MARCH_BONNELL:
|
|
case X86_MARCH_SALTWELL:
|
|
Puts("-march=bonnell");
|
|
break;
|
|
case X86_MARCH_SILVERMONT:
|
|
case X86_MARCH_AIRMONT:
|
|
Puts("-march=silvermont");
|
|
break;
|
|
case X86_MARCH_GOLDMONT:
|
|
Puts("-march=goldmont");
|
|
break;
|
|
case X86_MARCH_GOLDMONTPLUS:
|
|
Puts("-march=goldmont-plus");
|
|
break;
|
|
case X86_MARCH_TREMONT:
|
|
Puts("-march=tremont");
|
|
break;
|
|
case X86_MARCH_KNIGHTSLANDING:
|
|
Puts("-march=knl");
|
|
break;
|
|
case X86_MARCH_KNIGHTSMILL:
|
|
Puts("-march=knm");
|
|
break;
|
|
}
|
|
}
|
|
#elif defined(__aarch64__)
|
|
// TODO(jart): How can we determine CPU features on AARCH64?
|
|
#else
|
|
// otherwise do nothing (it's usually best)
|
|
#endif
|
|
}
|