mirror of
https://github.com/mollyim/webrtc.git
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0c9204c183
This reverts commit 1ca8d87239.
Reason for revert: breaks downstream project
Original change's description:
> Support AVX2/FMA intrinsics in Audio Resampler module
>
> From the test result, using AVX2/FMA is 1.60x faster than SSE on atlas.
>
> Bug: webrtc:11663
> Test: common_audio_unittests on atlas and octopus.
> Change-Id: Ibd45ea46aa97d5790a24e5116f741592b95f6416
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176382
> Reviewed-by: Per Åhgren <peah@webrtc.org>
> Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Reviewed-by: Sam Zackrisson <saza@webrtc.org>
> Commit-Queue: Sam Zackrisson <saza@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31810}
TBR=mbonadei@webrtc.org,henrika@webrtc.org,henrik.lundin@webrtc.org,saza@webrtc.org,peah@webrtc.org,mflodman@webrtc.org,zhaoliang.ma@intel.com
Change-Id: I1dad31df446e336dacb29ff637bd66f809376458
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:11663
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/180622
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Commit-Queue: Åsa Persson <asapersson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31813}
72 lines
2 KiB
C++
72 lines
2 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// Parts of this file derived from Chromium's base/cpu.cc.
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#include "rtc_base/system/arch.h"
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#include "system_wrappers/include/cpu_features_wrapper.h"
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#if defined(WEBRTC_ARCH_X86_FAMILY) && defined(_MSC_VER)
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#include <intrin.h>
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#endif
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// No CPU feature is available => straight C path.
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int GetCPUInfoNoASM(CPUFeature feature) {
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(void)feature;
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return 0;
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}
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#if defined(WEBRTC_ARCH_X86_FAMILY)
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#ifndef _MSC_VER
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// Intrinsic for "cpuid".
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#if defined(__pic__) && defined(__i386__)
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static inline void __cpuid(int cpu_info[4], int info_type) {
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__asm__ volatile(
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"mov %%ebx, %%edi\n"
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"cpuid\n"
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"xchg %%edi, %%ebx\n"
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: "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]),
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"=d"(cpu_info[3])
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: "a"(info_type));
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}
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#else
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static inline void __cpuid(int cpu_info[4], int info_type) {
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__asm__ volatile("cpuid\n"
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: "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]),
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"=d"(cpu_info[3])
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: "a"(info_type));
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}
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#endif
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#endif // _MSC_VER
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#endif // WEBRTC_ARCH_X86_FAMILY
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#if defined(WEBRTC_ARCH_X86_FAMILY)
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// Actual feature detection for x86.
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static int GetCPUInfo(CPUFeature feature) {
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int cpu_info[4];
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__cpuid(cpu_info, 1);
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if (feature == kSSE2) {
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return 0 != (cpu_info[3] & 0x04000000);
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}
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if (feature == kSSE3) {
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return 0 != (cpu_info[2] & 0x00000001);
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}
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return 0;
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}
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#else
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// Default to straight C for other platforms.
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static int GetCPUInfo(CPUFeature feature) {
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(void)feature;
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return 0;
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}
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#endif
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WebRtc_CPUInfo WebRtc_GetCPUInfo = GetCPUInfo;
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WebRtc_CPUInfo WebRtc_GetCPUInfoNoASM = GetCPUInfoNoASM;
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