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annotate contrib/python-zstandard/zstd/common/cpu.h @ 48674:f7086f6173f8 stable

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dirstate-v2: rename the configuration to enable the format The rename of the old experimental name was overlooked before the 6.0 release. We rename everything to use the new name (and keep the released name as an alias for compatibility). Differential Revision: https://phab.mercurial-scm.org/D12129
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 01 Feb 2022 16:36:20 +0100
parents 675775c33ab6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2018-present, Facebook, Inc.
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3 * All rights reserved.
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4 *
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5 * This source code is licensed under both the BSD-style license (found in the
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6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
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7 * in the COPYING file in the root directory of this source tree).
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8 * You may select, at your option, one of the above-listed licenses.
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9 */
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10
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11 #ifndef ZSTD_COMMON_CPU_H
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12 #define ZSTD_COMMON_CPU_H
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13
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14 /**
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15 * Implementation taken from folly/CpuId.h
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16 * https://github.com/facebook/folly/blob/master/folly/CpuId.h
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17 */
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18
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19 #include <string.h>
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20
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21 #include "mem.h"
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22
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23 #ifdef _MSC_VER
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24 #include <intrin.h>
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25 #endif
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26
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27 typedef struct {
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28 U32 f1c;
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29 U32 f1d;
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30 U32 f7b;
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31 U32 f7c;
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32 } ZSTD_cpuid_t;
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33
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34 MEM_STATIC ZSTD_cpuid_t ZSTD_cpuid(void) {
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35 U32 f1c = 0;
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36 U32 f1d = 0;
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37 U32 f7b = 0;
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38 U32 f7c = 0;
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39 #if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
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40 int reg[4];
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41 __cpuid((int*)reg, 0);
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42 {
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43 int const n = reg[0];
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44 if (n >= 1) {
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45 __cpuid((int*)reg, 1);
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46 f1c = (U32)reg[2];
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47 f1d = (U32)reg[3];
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48 }
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49 if (n >= 7) {
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50 __cpuidex((int*)reg, 7, 0);
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51 f7b = (U32)reg[1];
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52 f7c = (U32)reg[2];
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53 }
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54 }
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55 #elif defined(__i386__) && defined(__PIC__) && !defined(__clang__) && defined(__GNUC__)
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56 /* The following block like the normal cpuid branch below, but gcc
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57 * reserves ebx for use of its pic register so we must specially
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58 * handle the save and restore to avoid clobbering the register
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59 */
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60 U32 n;
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61 __asm__(
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62 "pushl %%ebx\n\t"
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63 "cpuid\n\t"
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64 "popl %%ebx\n\t"
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65 : "=a"(n)
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66 : "a"(0)
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67 : "ecx", "edx");
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68 if (n >= 1) {
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69 U32 f1a;
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70 __asm__(
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71 "pushl %%ebx\n\t"
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72 "cpuid\n\t"
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73 "popl %%ebx\n\t"
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74 : "=a"(f1a), "=c"(f1c), "=d"(f1d)
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75 : "a"(1));
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76 }
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77 if (n >= 7) {
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78 __asm__(
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79 "pushl %%ebx\n\t"
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80 "cpuid\n\t"
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81 "movl %%ebx, %%eax\n\t"
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82 "popl %%ebx"
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83 : "=a"(f7b), "=c"(f7c)
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84 : "a"(7), "c"(0)
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85 : "edx");
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86 }
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87 #elif defined(__x86_64__) || defined(_M_X64) || defined(__i386__)
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88 U32 n;
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89 __asm__("cpuid" : "=a"(n) : "a"(0) : "ebx", "ecx", "edx");
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90 if (n >= 1) {
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91 U32 f1a;
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92 __asm__("cpuid" : "=a"(f1a), "=c"(f1c), "=d"(f1d) : "a"(1) : "ebx");
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93 }
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94 if (n >= 7) {
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95 U32 f7a;
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96 __asm__("cpuid"
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97 : "=a"(f7a), "=b"(f7b), "=c"(f7c)
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98 : "a"(7), "c"(0)
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99 : "edx");
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100 }
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101 #endif
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102 {
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103 ZSTD_cpuid_t cpuid;
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104 cpuid.f1c = f1c;
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105 cpuid.f1d = f1d;
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106 cpuid.f7b = f7b;
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107 cpuid.f7c = f7c;
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108 return cpuid;
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109 }
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110 }
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111
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112 #define X(name, r, bit) \
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113 MEM_STATIC int ZSTD_cpuid_##name(ZSTD_cpuid_t const cpuid) { \
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114 return ((cpuid.r) & (1U << bit)) != 0; \
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115 }
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116
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117 /* cpuid(1): Processor Info and Feature Bits. */
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118 #define C(name, bit) X(name, f1c, bit)
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119 C(sse3, 0)
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120 C(pclmuldq, 1)
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121 C(dtes64, 2)
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122 C(monitor, 3)
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123 C(dscpl, 4)
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124 C(vmx, 5)
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125 C(smx, 6)
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126 C(eist, 7)
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127 C(tm2, 8)
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128 C(ssse3, 9)
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129 C(cnxtid, 10)
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130 C(fma, 12)
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diff changeset
131 C(cx16, 13)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
132 C(xtpr, 14)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
133 C(pdcm, 15)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
134 C(pcid, 17)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
135 C(dca, 18)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
136 C(sse41, 19)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
137 C(sse42, 20)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
138 C(x2apic, 21)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
139 C(movbe, 22)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
140 C(popcnt, 23)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
141 C(tscdeadline, 24)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
142 C(aes, 25)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
143 C(xsave, 26)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
144 C(osxsave, 27)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
145 C(avx, 28)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
146 C(f16c, 29)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
147 C(rdrand, 30)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
148 #undef C
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
149 #define D(name, bit) X(name, f1d, bit)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
150 D(fpu, 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
151 D(vme, 1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
152 D(de, 2)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
153 D(pse, 3)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
154 D(tsc, 4)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
155 D(msr, 5)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
156 D(pae, 6)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
157 D(mce, 7)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
158 D(cx8, 8)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
159 D(apic, 9)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
160 D(sep, 11)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
161 D(mtrr, 12)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
162 D(pge, 13)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
163 D(mca, 14)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
164 D(cmov, 15)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
165 D(pat, 16)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
166 D(pse36, 17)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
167 D(psn, 18)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
168 D(clfsh, 19)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
169 D(ds, 21)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
170 D(acpi, 22)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
171 D(mmx, 23)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
172 D(fxsr, 24)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
173 D(sse, 25)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
174 D(sse2, 26)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
175 D(ss, 27)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
176 D(htt, 28)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
177 D(tm, 29)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
178 D(pbe, 31)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
179 #undef D
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
180
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
181 /* cpuid(7): Extended Features. */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
182 #define B(name, bit) X(name, f7b, bit)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
183 B(bmi1, 3)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
184 B(hle, 4)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
185 B(avx2, 5)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
186 B(smep, 7)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
187 B(bmi2, 8)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
188 B(erms, 9)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
189 B(invpcid, 10)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
190 B(rtm, 11)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
191 B(mpx, 14)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
192 B(avx512f, 16)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
193 B(avx512dq, 17)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
194 B(rdseed, 18)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
195 B(adx, 19)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
196 B(smap, 20)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
197 B(avx512ifma, 21)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
198 B(pcommit, 22)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
199 B(clflushopt, 23)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
200 B(clwb, 24)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
201 B(avx512pf, 26)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
202 B(avx512er, 27)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
203 B(avx512cd, 28)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
204 B(sha, 29)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
205 B(avx512bw, 30)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
206 B(avx512vl, 31)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
207 #undef B
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
208 #define C(name, bit) X(name, f7c, bit)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
209 C(prefetchwt1, 0)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
210 C(avx512vbmi, 1)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
211 #undef C
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
212
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
213 #undef X
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
214
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
215 #endif /* ZSTD_COMMON_CPU_H */