diff options
| author | Paul Davis <paul@linuxaudiosystems.com> | 2015-05-12 21:15:48 -0400 |
|---|---|---|
| committer | Paul Davis <paul@linuxaudiosystems.com> | 2015-06-29 14:18:13 -0400 |
| commit | 92df1594f93a1235c850521a7e3087246df06550 (patch) | |
| tree | 6be3a693d0b4d1578541fc108c5bdce02837c46d /libs/ardour/sse_functions_avx.cc | |
| parent | 07c07501428f2bc3409c89d5e7e2413d560feefe (diff) | |
Corrected comments for x86_sse_avx_find_peaks() intrinsics built function
Diffstat (limited to 'libs/ardour/sse_functions_avx.cc')
| -rw-r--r-- | libs/ardour/sse_functions_avx.cc | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/libs/ardour/sse_functions_avx.cc b/libs/ardour/sse_functions_avx.cc index 8c076aacb5..0b314948c5 100644 --- a/libs/ardour/sse_functions_avx.cc +++ b/libs/ardour/sse_functions_avx.cc @@ -28,7 +28,7 @@ x86_sse_avx_find_peaks(const ARDOUR::Sample* buf, ARDOUR::pframes_t nframes, flo { __m256 current_max, current_min, work; - // Load max and min values into all four slots of the XMM registers + // Load max and min values into all eight slots of the YMM registers current_min = _mm256_set1_ps(*min); current_max = _mm256_set1_ps(*max); @@ -49,8 +49,8 @@ x86_sse_avx_find_peaks(const ARDOUR::Sample* buf, ARDOUR::pframes_t nframes, flo // load each 64 bytes into cash before processing while (nframes >= 16) { #if defined(COMPILER_MSVC) || defined(COMPILER_MINGW) - _mm_prefetch(((char*)buf+64), _mm_hint(0) ); // A total guess! Assumed to be eqivalent to -#else // the line below but waiting to be tested !! + _mm_prefetch(((char*)buf+64), _mm_hint(0) ); +#else __builtin_prefetch(buf+64,0,0); #endif work = _mm256_load_ps(buf); @@ -112,9 +112,8 @@ x86_sse_avx_find_peaks(const ARDOUR::Sample* buf, ARDOUR::pframes_t nframes, flo *max = current_max[0]; - // zero upper 128 bit of 256 bit ymm register to avoid penalties using non AVX instructions + // zero upper 128 bit of 256 bit ymm register to avoid penalties using non-AVX instructions _mm256_zeroupper (); } - |