microarchitectures: readable names for AArch64 vendors (#13825)
Vendors for ARM come out of `/proc/cpuinfo` as hex numbers instead of readable strings. - Add support for associating vendor names with the hex numbers. - Also move these mappings from Python code to `microarchitectures.json` - Move darwin feature name mappings to `microarchitectures.json` as well
This commit is contained in:
Massimiliano Culpo
Todd Gamblin
parent
a4ff92e42d
commit
5eca4f1470
4 changed files with 103 additions and 30 deletions
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@ -13,6 +13,7 @@
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import six
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from .microarchitecture import generic_microarchitecture, targets
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from .schema import targets_json
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#: Mapping from operating systems to chain of commands
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#: to obtain a dictionary of raw info on the current cpu
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@ -108,23 +109,39 @@ def sysctl(*args):
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'model': sysctl('-n', 'machdep.cpu.model'),
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'model name': sysctl('-n', 'machdep.cpu.brand_string')
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}
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# Super hacky way to deal with slight representation differences
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# Would be better to somehow consider these "identical"
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if 'sse4.1' in info['flags']:
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info['flags'] += ' sse4_1'
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if 'sse4.2' in info['flags']:
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info['flags'] += ' sse4_2'
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if 'avx1.0' in info['flags']:
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info['flags'] += ' avx'
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if 'clfsopt' in info['flags']:
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info['flags'] += ' clflushopt'
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if 'xsave' in info['flags']:
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info['flags'] += ' xsavec xsaveopt'
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return info
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def adjust_raw_flags(info):
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"""Adjust the flags detected on the system to homogenize
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slightly different representations.
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"""
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# Flags detected on Darwin turned to their linux counterpart
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flags = info.get('flags', [])
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d2l = targets_json['conversions']['darwin_flags']
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for darwin_flag, linux_flag in d2l.items():
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if darwin_flag in flags:
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info['flags'] += ' ' + linux_flag
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def adjust_raw_vendor(info):
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"""Adjust the vendor field to make it human readable"""
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if 'CPU implementer' not in info:
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return
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# Mapping numeric codes to vendor (ARM). This list is a merge from
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# different sources:
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#
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# https://github.com/karelzak/util-linux/blob/master/sys-utils/lscpu-arm.c
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# https://developer.arm.com/docs/ddi0487/latest/arm-architecture-reference-manual-armv8-for-armv8-a-architecture-profile
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# https://github.com/gcc-mirror/gcc/blob/master/gcc/config/aarch64/aarch64-cores.def
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# https://patchwork.kernel.org/patch/10524949/
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arm_vendors = targets_json['conversions']['arm_vendors']
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arm_code = info['CPU implementer']
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if arm_code in arm_vendors:
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info['CPU implementer'] = arm_vendors[arm_code]
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def raw_info_dictionary():
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"""Returns a dictionary with information on the cpu of the current host.
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@ -139,6 +156,8 @@ def raw_info_dictionary():
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warnings.warn(str(e))
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if info:
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adjust_raw_flags(info)
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adjust_raw_vendor(info)
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break
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return info
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@ -1134,14 +1134,13 @@
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},
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"clang": {
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"versions": ":",
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"family": "aarch64",
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"flags": "-march={family} -mcpu=generic"
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"flags": "-march=armv8-a -mtune=generic"
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}
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}
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},
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"thunderx2": {
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"from": "aarch64",
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"vendor": "0x43",
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"vendor": "Cavium",
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"features": [
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"fp",
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"asimd",
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@ -1174,15 +1173,21 @@
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"flags": "-mcpu=thunderx2t99"
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}
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],
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"clang": {
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"versions": ":",
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"flags": "-march=armv8-a -mcpu=generic"
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"clang": [
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{
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"versions": "3.9:4.9",
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"flags": "-march=armv8.1-a+crc+crypto"
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},
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{
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"versions": "5:",
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"flags": "-mcpu=thunderx2t99"
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}
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]
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}
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},
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"a64fx": {
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"from": "aarch64",
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"vendor": "0x46",
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"vendor": "Fujitsu",
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"features": [
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"fp",
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"asimd",
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@ -1217,17 +1222,23 @@
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},
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{
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"versions": "7:7.9",
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"flags": "-arch=armv8.2a+crc+crypt+fp16"
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"flags": "-march=armv8.2a+crc+crypto+fp16"
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},
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{
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"versions": "8:",
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"flags": "-arch=armv8.2a+crc+aes+sh2+fp16+sve -msve-vector-bits=512"
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"flags": "-march=armv8.2a+crc+aes+sha2+fp16+sve -msve-vector-bits=512"
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}
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],
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"clang": {
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"versions": ":",
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"flags": "-march=armv8-a -mcpu=generic"
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"clang": [
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{
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"versions": "3.9:4.9",
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"flags": "-march=armv8.2-a+crc+crypto+fp16"
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},
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{
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"versions": "5:",
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"flags": "-march=armv8.2-a+crc+crypto+fp16+sve"
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}
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]
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}
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},
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"arm": {
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@ -1313,5 +1324,34 @@
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"aarch64"
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]
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}
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},
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"conversions": {
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"description": "Conversions that map some platform specific values to canonical values",
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"arm_vendors": {
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"0x41": "ARM",
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"0x42": "Broadcom",
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"0x43": "Cavium",
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"0x44": "DEC",
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"0x46": "Fujitsu",
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"0x48": "HiSilicon",
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"0x49": "Infineon Technologies AG",
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"0x4d": "Motorola",
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"0x4e": "Nvidia",
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"0x50": "APM",
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"0x51": "Qualcomm",
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"0x53": "Samsung",
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"0x56": "Marvell",
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"0x61": "Apple",
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"0x66": "Faraday",
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"0x68": "HXT",
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"0x69": "Intel"
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},
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"darwin_flags": {
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"sse4.1": "sse4_1",
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"sse4.2": "sse4_2",
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"avx1.0": "avx",
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"clfsopt": "clflushopt",
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"xsave": "xsavec xsaveopt"
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}
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}
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}
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@ -72,7 +72,21 @@
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'additionalProperties': False
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}
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},
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},
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'conversions': {
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'type': 'object',
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'properties': {
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'description': {
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'type': 'string'
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},
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'arm_vendors': {
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'type': 'object',
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},
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'darwin_flags': {
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'type': 'object'
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}
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},
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'additionalProperties': False
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}
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}
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@ -219,7 +219,7 @@ def test_target_json_schema():
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'-march=icelake-client -mtune=icelake-client'),
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('zen2', 'clang', '9.0.0', '-march=znver2 -mtune=znver2'),
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('power9le', 'clang', '8.0.0', '-march=ppc64le -mcpu=pwr9'),
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('thunderx2', 'clang', '6.0.0', '-march=armv8-a -mcpu=generic'),
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('thunderx2', 'clang', '6.0.0', '-mcpu=thunderx2t99'),
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# Test Intel on Intel CPUs
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('sandybridge', 'intel', '17.0.2', '-march=corei7-avx -mtune=corei7-avx'),
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('sandybridge', 'intel', '18.0.5',
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