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/*
* Copyright (C) 2014, The University of Texas at Austin
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of The University of Texas at Austin nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* Copyright (C) 2014-2015, Michael Lehn
*
* ulmBLAS adopted general ideas from BLIS. Using micro kernels from BLIS
* only requires minor modifications,
*
*/
#ifndef ULMBLAS_IMPL_LEVEL1EXTENSIONS_KERNEL_SSE_DOTXF_TCC
#define ULMBLAS_IMPL_LEVEL1EXTENSIONS_KERNEL_SSE_DOTXF_TCC 1
#include <immintrin.h>
#include <ulmblas/impl/level1extensions/kernel/ref/dotxf.h>
#include <ulmblas/impl/level1extensions/kernel/sse/dotxf.h>
#include <ulmblas/impl/level1extensions/kernel/sse/dot2v.h>
namespace ulmBLAS { namespace sse {
//
// ----------------
// Double Precision
// ----------------
//
template <typename IndexType>
typename std::enable_if<std::is_integral<IndexType>::value
&& FuseFactor<double>::dotuxf==2,
void>::type
dotuxf(IndexType n,
const double *X,
IndexType incRowX,
IndexType incColX,
const double *y,
IndexType incY,
double *result,
IndexType resultInc)
{
dotu2v(n,
&X[0*incRowX], incColX,
&X[1*incRowX], incColX,
y, incY,
result, resultInc);
}
template <typename IndexType>
typename std::enable_if<std::is_integral<IndexType>::value
&& FuseFactor<double>::dotuxf==4,
void>::type
dotuxf(IndexType n,
const double *X,
IndexType incRowX,
IndexType incColX,
const double *y,
IndexType incY,
double *result,
IndexType resultInc)
{
if (n<=0) {
return;
}
if (incColX!=1 || incY!=1) {
ref::dotuxf(n, X, incRowX, incColX, y, incY, result, resultInc);
return;
}
double &result1 = result[0*resultInc];
double &result2 = result[1*resultInc];
double &result3 = result[2*resultInc];
double &result4 = result[3*resultInc];
const double *x0 = &X[0*incRowX];
const double *x1 = &X[1*incRowX];
const double *x2 = &X[2*incRowX];
const double *x3 = &X[3*incRowX];
bool x0Aligned = isAligned(x0, 16);
bool x1Aligned = isAligned(x1, 16);
bool yAligned = isAligned(y, 16);
result1 = result2 = result3 = result4 = double(0);
if (!x0Aligned && !x1Aligned && !yAligned) {
result1 += x0[0]*y[0];
result2 += x1[0]*y[0];
result3 += x2[0]*y[0];
result4 += x3[0]*y[0];
++x0;
++x1;
++x2;
++x3;
++y;
--n;
x0Aligned = x1Aligned = yAligned = true;
}
if (x0Aligned && x1Aligned && yAligned) {
IndexType nb = n / 4;
IndexType nl = n % 4;
__m128d rho0, rho1, rho2, rho3;
__m128d y12, y34;
__m128d x0_12, x0_34;
__m128d x1_12, x1_34;
__m128d x2_12, x2_34;
__m128d x3_12, x3_34;
rho0 = _mm_setzero_pd();
rho1 = _mm_setzero_pd();
rho2 = _mm_setzero_pd();
rho3 = _mm_setzero_pd();
for (IndexType i=0; i<nb; ++i) {
y12 = _mm_load_pd(y);
y34 = _mm_load_pd(y+2);
x0_12 = _mm_load_pd(x0);
x0_34 = _mm_load_pd(x0+2);
x1_12 = _mm_load_pd(x1);
x1_34 = _mm_load_pd(x1+2);
x2_12 = _mm_load_pd(x2);
x2_34 = _mm_load_pd(x2+2);
x3_12 = _mm_load_pd(x3);
x3_34 = _mm_load_pd(x3+2);
x0_12 *= y12;
rho0 += x0_12;
x0_34 *= y34;
rho0 += x0_34;
x1_12 *= y12;
rho1 += x1_12;
x1_34 *= y34;
rho1 += x1_34;
x2_12 *= y12;
rho2 += x2_12;
x2_34 *= y34;
rho2 += x2_34;
x3_12 *= y12;
rho3 += x3_12;
x3_34 *= y34;
rho3 += x3_34;
x0 += 4;
x1 += 4;
x2 += 4;
x3 += 4;
y += 4;
}
double rho0_[2];
double rho1_[2];
double rho2_[2];
double rho3_[2];
_mm_store_pd(rho0_, rho0);
_mm_store_pd(rho1_, rho1);
_mm_store_pd(rho2_, rho2);
_mm_store_pd(rho3_, rho3);
for (IndexType i=0; i<nl; ++i) {
result1 += x0[i]*y[i];
result2 += x1[i]*y[i];
result3 += x2[i]*y[i];
result4 += x3[i]*y[i];
}
result1 += rho0_[0] + rho0_[1];
result2 += rho1_[0] + rho1_[1];
result3 += rho2_[0] + rho2_[1];
result4 += rho3_[0] + rho3_[1];
} else {
ref::dotuxf(n, X, incRowX, incColX, y, incY, result, resultInc);
}
}
} } // namespace sse, ulmBLAS
#endif // ULMBLAS_IMPL_LEVEL1EXTENSIONS_KERNEL_SSE_DOTXF_TCC
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