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| author | Adenilson Cavalcanti <adenilson.cavalcanti@arm.com> | 2020-01-08 22:12:31 +0000 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-01-08 22:12:31 +0000 |
| commit | 5de00af04ef8222610d27a2b09a598fafd402213 (patch) | |
| tree | 0357f9d343d9ed7f0152a2061d3e2e2f721e9cab /cpu_features.h | |
| parent | 814da1f383b625955149c3845db62af3f29a4ffe (diff) | |
| download | zlib-5de00af04ef8222610d27a2b09a598fafd402213.tar.gz | |
Unify CPU features detection code
This will allow to remove some duplicated code (i.e. thread synchronization)
while at same time removing unnecessary use of inline ASM for Intel features
detection.
A few other advantages:
- remove some extra logic (e.g. no need to test the platform to include the
correct CPU detection header).
- simplifies the buildsystem (i.e. we always include cpu_features.c)
- get rid of the simd_stub file.
Bug: 1032721
Change-Id: I9427b34ec09dddc41925844a6ec4e6aa4d8f3207
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1987190
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Adenilson Cavalcanti <cavalcantii@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#729515}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: d989ac2c596e88e7581eb93d053945a43c611124
Diffstat (limited to 'cpu_features.h')
| -rw-r--r-- | cpu_features.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/cpu_features.h b/cpu_features.h new file mode 100644 index 0000000..2a4a797 --- /dev/null +++ b/cpu_features.h @@ -0,0 +1,17 @@ +/* cpu_features.h -- Processor features detection. + * + * Copyright 2018 The Chromium Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the Chromium source repository LICENSE file. + */ + +#include "zlib.h" + +/* TODO(cavalcantii): remove checks for x86_flags on deflate. + */ +extern int arm_cpu_enable_crc32; +extern int arm_cpu_enable_pmull; +extern int x86_cpu_enable_ssse3; +extern int x86_cpu_enable_simd; + +void cpu_check_features(void); |