mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
d53c335a45
This new script is an alternative to the `cosmocc` command. It's still a work in progress. It abstracts all the gory details of building separate copies of your executable and then running the apelink.com program.
185 lines
6.6 KiB
C
185 lines
6.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/nexgen32e/x86feature.h"
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#include "libc/nexgen32e/x86info.h"
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#include "libc/runtime/runtime.h"
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#include "third_party/getopt/getopt.internal.h"
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/**
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* @fileoverview Command for printing `-march=native` flags.
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*
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* In recent years (2023) compilers have decided to remove support for
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* the `-march=native` flag, even on x86. That's unfortunate, since as
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* we can see below, grokking all the various microarchitecture is not
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* something a compiler should reasonably expect from users especially
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* not for a flag as important as this one, which can have a night and
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* day impact for apps that do scientific computing.
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*
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* This is a tiny program, that makes it easy for shell scripts to get
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* these flags.
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*/
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#define VERSION \
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"-march=native flag printer v0.1\n" \
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"copyright 2023 justine alexandra roberts tunney\n"
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#define USAGE \
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"usage: march-native.com [-hvc]\n" \
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" -h show help\n" \
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" -v show version\n" \
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" -c assume we're using clang (not gcc)\n"
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static bool isclang;
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static void GetOpts(int argc, char *argv[]) {
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int opt;
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while ((opt = getopt(argc, argv, "hvc")) != -1) {
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switch (opt) {
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case 'c':
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isclang = true;
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break;
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case 'v':
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tinyprint(1, VERSION, NULL);
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exit(0);
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case 'h':
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tinyprint(1, VERSION, USAGE, NULL);
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exit(0);
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default:
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tinyprint(2, VERSION, USAGE, NULL);
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exit(1);
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}
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}
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}
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static void Puts(const char *s) {
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tinyprint(1, s, "\n", NULL);
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}
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int main(int argc, char *argv[]) {
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GetOpts(argc, argv);
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#ifdef __x86_64__
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struct X86ProcessorModel *model;
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if (X86_HAVE(XOP)) Puts("-mxop");
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if (X86_HAVE(SSE4A)) Puts("-msse4a");
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if (X86_HAVE(SSE3)) Puts("-msse3");
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if (X86_HAVE(SSSE3)) Puts("-mssse3");
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if (X86_HAVE(SSE4_1)) Puts("-msse4.1");
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if (X86_HAVE(SSE4_2)) Puts("-msse4.2");
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if (X86_HAVE(AVX)) Puts("-mavx");
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if (X86_HAVE(AVX2)) {
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Puts("-mavx2");
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if (!isclang) {
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Puts("-msse2avx");
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Puts("-Wa,-msse2avx");
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}
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}
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if (X86_HAVE(AVX512F)) Puts("-mavx512f");
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if (X86_HAVE(AVX512PF)) Puts("-mavx512pf");
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if (X86_HAVE(AVX512ER)) Puts("-mavx512er");
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if (X86_HAVE(AVX512CD)) Puts("-mavx512cd");
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if (X86_HAVE(AVX512VL)) Puts("-mavx512vl");
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if (X86_HAVE(AVX512BW)) Puts("-mavx512bw");
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if (X86_HAVE(AVX512DQ)) Puts("-mavx512dq");
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if (X86_HAVE(AVX512IFMA)) Puts("-mavx512ifma");
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if (X86_HAVE(AVX512VBMI)) Puts("-mavx512vbmi");
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if (X86_HAVE(SHA)) Puts("-msha");
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if (X86_HAVE(AES)) Puts("-maes");
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if (X86_HAVE(VAES)) Puts("-mvaes");
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if (X86_HAVE(PCLMUL)) Puts("-mpclmul");
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if (X86_HAVE(FSGSBASE)) Puts("-mfsgsbase");
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if (X86_HAVE(F16C)) Puts("-mf16c");
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if (X86_HAVE(FMA)) Puts("-mfma");
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if (X86_HAVE(POPCNT)) Puts("-mpopcnt");
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if (X86_HAVE(BMI)) Puts("-mbmi");
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if (X86_HAVE(BMI2)) Puts("-mbmi2");
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if (X86_HAVE(ADX)) Puts("-madx");
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if (X86_HAVE(FXSR)) Puts("-mfxsr");
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if ((model = getx86processormodel(kX86ProcessorModelKey))) {
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switch (model->march) {
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case X86_MARCH_CORE2:
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Puts("-march=core2");
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break;
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case X86_MARCH_NEHALEM:
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Puts("-march=nehalem");
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break;
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case X86_MARCH_WESTMERE:
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Puts("-march=westmere");
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break;
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case X86_MARCH_SANDYBRIDGE:
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Puts("-march=sandybridge");
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break;
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case X86_MARCH_IVYBRIDGE:
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Puts("-march=ivybridge");
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break;
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case X86_MARCH_HASWELL:
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Puts("-march=haswell");
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break;
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case X86_MARCH_BROADWELL:
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Puts("-march=broadwell");
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break;
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case X86_MARCH_SKYLAKE:
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case X86_MARCH_KABYLAKE:
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Puts("-march=skylake");
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break;
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case X86_MARCH_CANNONLAKE:
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Puts("-march=cannonlake");
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break;
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case X86_MARCH_ICELAKE:
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if (model->grade >= X86_GRADE_SERVER) {
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Puts("-march=icelake-server");
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} else {
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Puts("-march=icelake-client");
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}
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break;
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case X86_MARCH_TIGERLAKE:
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Puts("-march=tigerlake");
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break;
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case X86_MARCH_BONNELL:
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case X86_MARCH_SALTWELL:
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Puts("-march=bonnell");
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break;
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case X86_MARCH_SILVERMONT:
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case X86_MARCH_AIRMONT:
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Puts("-march=silvermont");
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break;
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case X86_MARCH_GOLDMONT:
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Puts("-march=goldmont");
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break;
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case X86_MARCH_GOLDMONTPLUS:
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Puts("-march=goldmont-plus");
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break;
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case X86_MARCH_TREMONT:
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Puts("-march=tremont");
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break;
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case X86_MARCH_KNIGHTSLANDING:
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Puts("-march=knl");
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break;
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case X86_MARCH_KNIGHTSMILL:
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Puts("-march=knm");
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break;
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}
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}
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#elif defined(__aarch64__)
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// TODO(jart): How can we determine CPU features on AARCH64?
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#else
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// otherwise do nothing (it's usually best)
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#endif
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}
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