Remove runtime NEON detection

webrtc/modules/audio_processing/aecm/aecm_core.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 347 matching lines @@
     {
         aecm->channelAdapt32[i] = (int32_t)aecm->channelStored[i] << 16;
         aecm->channelAdapt32[i + 1] = (int32_t)aecm->channelStored[i + 1] << 16;
         aecm->channelAdapt32[i + 2] = (int32_t)aecm->channelStored[i + 2] << 16;
         aecm->channelAdapt32[i + 3] = (int32_t)aecm->channelStored[i + 3] << 16;
     }
     aecm->channelAdapt32[i] = (int32_t)aecm->channelStored[i] << 16;
 }
 
 // Initialize function pointers for ARM Neon platform.
-#if (defined WEBRTC_DETECT_NEON || defined WEBRTC_HAS_NEON)
+#if defined(WEBRTC_HAS_NEON)
 static void WebRtcAecm_InitNeon(void)
 {
   WebRtcAecm_StoreAdaptiveChannel = WebRtcAecm_StoreAdaptiveChannelNeon;
   WebRtcAecm_ResetAdaptiveChannel = WebRtcAecm_ResetAdaptiveChannelNeon;
   WebRtcAecm_CalcLinearEnergies = WebRtcAecm_CalcLinearEnergiesNeon;
 }
 #endif
 
 // Initialize function pointers for MIPS platform.
 #if defined(MIPS32_LE)
@@ skipping 126 matching lines @@
 
     // Assert a preprocessor definition at compile-time. It's an assumption
     // used in assembly code, so check the assembly files before any change.
     static_assert(PART_LEN % 16 == 0, "PART_LEN is not a multiple of 16");
 
     // Initialize function pointers.
     WebRtcAecm_CalcLinearEnergies = CalcLinearEnergiesC;
     WebRtcAecm_StoreAdaptiveChannel = StoreAdaptiveChannelC;
     WebRtcAecm_ResetAdaptiveChannel = ResetAdaptiveChannelC;
 
-#ifdef WEBRTC_DETECT_NEON
-    uint64_t features = WebRtc_GetCPUFeaturesARM();
-    if ((features & kCPUFeatureNEON) != 0)
-    {
-      WebRtcAecm_InitNeon();
-    }
-#elif defined(WEBRTC_HAS_NEON)
+#if defined(WEBRTC_HAS_NEON)
     WebRtcAecm_InitNeon();
 #endif
 
 #if defined(MIPS32_LE)
     WebRtcAecm_InitMips();
 #endif
     return 0;
 }
 
 // TODO(bjornv): This function is currently not used. Add support for these
@@ skipping 696 matching lines @@
         memcpy(farend + readPos, aecm->farBuf + aecm->farBufReadPos,
                sizeof(int16_t) * readLen);
         aecm->farBufReadPos = 0;
         readPos = readLen;
         readLen = farLen - readLen;
     }
     memcpy(farend + readPos, aecm->farBuf + aecm->farBufReadPos,
            sizeof(int16_t) * readLen);
     aecm->farBufReadPos += readLen;
 }