Check FMA3 support before use it in SincResampler
This is a port of crrev.com/c/2936677.
Previously we only checked avx2 support and then use avx2/fma
intrinsics in SincResampler(crrev.com/c/2654647),this CL also
checks the fma support and avoids using avx2 code if fma is not
supported.
Bug: chromium:1410691
Change-Id: Ibf7c0a1bead87ebe5d3978cfd20cc23525169f40
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/291702
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Henrik Lundin <henrik.lundin@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39238}
diff --git a/system_wrappers/source/cpu_features.cc b/system_wrappers/source/cpu_features.cc
index b676339..8cd701e 100644
--- a/system_wrappers/source/cpu_features.cc
+++ b/system_wrappers/source/cpu_features.cc
@@ -103,6 +103,9 @@
(cpu_info7[1] & 0x00000100) != 0 /* BMI2 */;
}
#endif // WEBRTC_ENABLE_AVX2
+ if (feature == kFMA3) {
+ return 0 != (cpu_info[2] & 0x00001000);
+ }
return 0;
}
#else
