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/* ************************************************************************
* Copyright 2013 Advanced Micro Devices, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ************************************************************************/
/*
* Implementation of functions for determining matrix properties
*/
#include "matrix_props.h"
static bool
gemmIsTrans(KernelExtraFlags flags, MatrixRole mrole)
{
bool trans = false;
bool order = false;
switch (mrole) {
case MATRIX_A:
trans = ((flags & KEXTRA_TRANS_A) != 0);
order = ((flags & KEXTRA_COLUMN_MAJOR) != 0);
break;
case MATRIX_B:
trans = ((flags & KEXTRA_TRANS_B) != 0);
order = !(flags & KEXTRA_COLUMN_MAJOR);
break;
case MATRIX_C:
trans = false;
order = ((flags & KEXTRA_COLUMN_MAJOR) != 0);
break;
default:
break;
}
// each initial flag "flip" resulting need transposing flag
return (trans ^ order);
}
static bool
trxmIsTrans(KernelExtraFlags flags, MatrixRole mrole)
{
bool trans = false;
bool order = false;
bool side = ((flags & KEXTRA_SIDE_RIGHT) != 0);
bool ret;
switch (mrole) {
case MATRIX_A:
trans = ((flags & KEXTRA_TRANS_A) != 0);
order = ((flags & KEXTRA_COLUMN_MAJOR) != 0);
break;
case MATRIX_B:
case MATRIX_C:
order = !(flags & KEXTRA_COLUMN_MAJOR); // row major
break;
default:
break;
}
// each initial flag "flip" resulting need transposing flag
ret = trans ^ order ^ side;
if (mrole == MATRIX_C) {
/*
* the output matrix always has inverted transposing flags against
* matrix B
*/
ret = !ret;
}
return ret;
}
static bool
syrkIsTrans(KernelExtraFlags flags, MatrixRole mrole)
{
bool ret = false;
switch (mrole) {
case MATRIX_A:
case MATRIX_B:
{
bool trans = ((flags & KEXTRA_TRANS_A) != 0);
bool order = ((flags & KEXTRA_COLUMN_MAJOR) != 0);
ret = (trans && !order) || (!trans && order);
break;
}
case MATRIX_C:
ret = ((flags & KEXTRA_COLUMN_MAJOR) != 0);
break;
default:
break;
}
return ret;
}
static bool
l2IsTrans(KernelExtraFlags flags, MatrixRole mrole)
{
bool ret;
if (mrole == MATRIX_A) {
bool trans = ((flags & KEXTRA_TRANS_A) != 0);
bool order = ((flags & KEXTRA_COLUMN_MAJOR) != 0);
ret = (trans && !order) || (!trans && order);
}
else {
ret = false;
}
return ret;
}
bool
isMatrixConj(KernelExtraFlags flags, MatrixRole mrole)
{
bool ret = false;
switch (mrole) {
case MATRIX_A:
ret = ((flags & KEXTRA_CONJUGATE_A) != 0);
break;
case MATRIX_B:
ret = ((flags & KEXTRA_CONJUGATE_B) != 0);
break;
default:
ret = false;
break;
}
return ret;
}
bool
isMatrixAccessColMaj(
BlasFunctionID funcID,
KernelExtraFlags flags,
MatrixRole mrole)
{
bool ret = false;
switch (funcID) {
case CLBLAS_SYMM:
case CLBLAS_GEMM:
case CLBLAS_GEMM2:
ret = gemmIsTrans(flags, mrole);
break;
case CLBLAS_TRMM:
case CLBLAS_TRSM:
ret = trxmIsTrans(flags, mrole);
break;
case CLBLAS_SYRK:
case CLBLAS_SYR2K:
ret = syrkIsTrans(flags, mrole);
break;
case CLBLAS_TRMV:
case CLBLAS_TRSV:
case CLBLAS_TRSV_GEMV:
ret = true;
break;
case CLBLAS_GEMV:
case CLBLAS_SYMV:
ret = l2IsTrans(flags, mrole);
default:
break;
}
return ret;
}
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