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[ardour.git] / libs / ardour / sse_functions_avx.cc

diff --git a/libs/ardour/sse_functions_avx.cc b/libs/ardour/sse_functions_avx.cc
index 8c076aacb5fd5a61707a4083d74f7267c8f018e9..19bca8041c89c7a43da8d84e4272769a038e8067 100644 (file)
--- a/libs/ardour/sse_functions_avx.cc
+++ b/libs/ardour/sse_functions_avx.cc
@@ -20,21 +20,21 @@
 
 #include <xmmintrin.h>
 #include <immintrin.h>
-#include "ardour/types.h"
+#include <stdint.h>
 
 
 void
-x86_sse_avx_find_peaks(const ARDOUR::Sample* buf, ARDOUR::pframes_t nframes, float *min, float *max)
+x86_sse_avx_find_peaks(const float* buf, uint32_t nframes, float *min, float *max)
 {
        __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);
 
        // Work input until "buf" reaches 16 byte alignment
        while ( ((intptr_t)buf) % 32 != 0 && nframes > 0) {
-               
+
                // Load the next float into the work buffer
                work = _mm256_set1_ps(*buf);
 
@@ -48,9 +48,9 @@ x86_sse_avx_find_peaks(const ARDOUR::Sample* buf, ARDOUR::pframes_t nframes, flo
         // use 64 byte prefetch for quadruple quads:
                // 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 !!
+#if defined(COMPILER_MSVC) || defined(COMPILER_MINGW)
+                               _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 ();
 }
 
 
-