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Abhishek Gola bdf348c13a Merge pull request #28934 from abhishek-gola:mlas_gemm
Added MLAS third party module and integrated into GeMM path #28934

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- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
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      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake
2026-05-22 20:22:15 +03:00

532 lines
14 KiB
C++

/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Licensed under the MIT License.
Module Name:
sgemmc.cpp
Abstract:
This module implements the kernels for the single precision matrix/matrix
multiply operation (SGEMM).
--*/
#include "mlasi.h"
template<bool ZeroMode, bool ProcessTwoRows>
size_t
MlasSgemmKernel(
const float* A,
const float* B,
float* C,
size_t CountK,
size_t CountN,
size_t lda,
size_t ldc,
float alpha
)
/*++
Routine Description:
This routine is an inner kernel to compute matrix multiplication for a
set of rows.
Arguments:
A - Supplies the address of matrix A.
B - Supplies the address of matrix B. The matrix data has been packed using
MlasSgemmCopyPackB or MlasSgemmTransposePackB.
C - Supplies the address of matrix C.
CountK - Supplies the number of columns from matrix A and the number of rows
from matrix B to iterate over.
CountN - Supplies the number of columns from matrix B and matrix C to
iterate over.
lda - Supplies the first dimension of matrix A.
ldc - Supplies the first dimension of matrix C.
alpha - Supplies the scalar multiplier (see SGEMM definition).
Return Value:
Returns the number of rows handled.
--*/
{
float32x4_t Row0Block0;
float32x4_t Row0Block1;
float32x4_t Row0Block2;
float32x4_t Row0Block3;
float32x4_t Row1Block0;
float32x4_t Row1Block1;
float32x4_t Row1Block2;
float32x4_t Row1Block3;
#if defined(_WIN32)
if (!ProcessTwoRows) {
UNREFERENCED_PARAMETER(lda);
UNREFERENCED_PARAMETER(ldc);
}
#endif
do {
float32x4_t BElements0;
float32x4_t BElements1;
float32x4_t BElements2;
float32x4_t BElements3;
float32x2_t Row0AElements;
float32x2_t Row1AElements;
//
// Clear the block accumulators.
//
Row0Block0 = vdupq_n_f32(0.0f);
Row0Block1 = vdupq_n_f32(0.0f);
Row0Block2 = vdupq_n_f32(0.0f);
Row0Block3 = vdupq_n_f32(0.0f);
if (ProcessTwoRows) {
Row1Block0 = vdupq_n_f32(0.0f);
Row1Block1 = vdupq_n_f32(0.0f);
Row1Block2 = vdupq_n_f32(0.0f);
Row1Block3 = vdupq_n_f32(0.0f);
}
//
// Compute the 16x1 or 16x2 output block.
//
const float* a = A;
size_t k = CountK;
while (k >= 2) {
Row0AElements = vld1_f32(a);
if (ProcessTwoRows) {
Row1AElements = vld1_f32(a + lda);
}
BElements0 = vld1q_f32(B + 0);
BElements1 = vld1q_f32(B + 4);
BElements2 = vld1q_f32(B + 8);
BElements3 = vld1q_f32(B + 12);
Row0Block0 = vmlaq_lane_f32(Row0Block0, BElements0, Row0AElements, 0);
Row0Block1 = vmlaq_lane_f32(Row0Block1, BElements1, Row0AElements, 0);
Row0Block2 = vmlaq_lane_f32(Row0Block2, BElements2, Row0AElements, 0);
Row0Block3 = vmlaq_lane_f32(Row0Block3, BElements3, Row0AElements, 0);
if (ProcessTwoRows) {
Row1Block0 = vmlaq_lane_f32(Row1Block0, BElements0, Row1AElements, 0);
Row1Block1 = vmlaq_lane_f32(Row1Block1, BElements1, Row1AElements, 0);
Row1Block2 = vmlaq_lane_f32(Row1Block2, BElements2, Row1AElements, 0);
Row1Block3 = vmlaq_lane_f32(Row1Block3, BElements3, Row1AElements, 0);
}
BElements0 = vld1q_f32(B + 16);
BElements1 = vld1q_f32(B + 20);
BElements2 = vld1q_f32(B + 24);
BElements3 = vld1q_f32(B + 28);
Row0Block0 = vmlaq_lane_f32(Row0Block0, BElements0, Row0AElements, 1);
Row0Block1 = vmlaq_lane_f32(Row0Block1, BElements1, Row0AElements, 1);
Row0Block2 = vmlaq_lane_f32(Row0Block2, BElements2, Row0AElements, 1);
Row0Block3 = vmlaq_lane_f32(Row0Block3, BElements3, Row0AElements, 1);
if (ProcessTwoRows) {
Row1Block0 = vmlaq_lane_f32(Row1Block0, BElements0, Row1AElements, 1);
Row1Block1 = vmlaq_lane_f32(Row1Block1, BElements1, Row1AElements, 1);
Row1Block2 = vmlaq_lane_f32(Row1Block2, BElements2, Row1AElements, 1);
Row1Block3 = vmlaq_lane_f32(Row1Block3, BElements3, Row1AElements, 1);
}
a += 2;
B += 32;
k -= 2;
}
if (k > 0) {
Row0AElements = vld1_dup_f32(a);
if (ProcessTwoRows) {
Row1AElements = vld1_dup_f32(a + lda);
}
BElements0 = vld1q_f32(B + 0);
BElements1 = vld1q_f32(B + 4);
BElements2 = vld1q_f32(B + 8);
BElements3 = vld1q_f32(B + 12);
Row0Block0 = vmlaq_lane_f32(Row0Block0, BElements0, Row0AElements, 0);
Row0Block1 = vmlaq_lane_f32(Row0Block1, BElements1, Row0AElements, 0);
Row0Block2 = vmlaq_lane_f32(Row0Block2, BElements2, Row0AElements, 0);
Row0Block3 = vmlaq_lane_f32(Row0Block3, BElements3, Row0AElements, 0);
if (ProcessTwoRows) {
Row1Block0 = vmlaq_lane_f32(Row1Block0, BElements0, Row1AElements, 0);
Row1Block1 = vmlaq_lane_f32(Row1Block1, BElements1, Row1AElements, 0);
Row1Block2 = vmlaq_lane_f32(Row1Block2, BElements2, Row1AElements, 0);
Row1Block3 = vmlaq_lane_f32(Row1Block3, BElements3, Row1AElements, 0);
}
B += 16;
}
//
// Multiply by the alpha value.
//
Row0Block0 = vmulq_n_f32(Row0Block0, alpha);
Row0Block1 = vmulq_n_f32(Row0Block1, alpha);
Row0Block2 = vmulq_n_f32(Row0Block2, alpha);
Row0Block3 = vmulq_n_f32(Row0Block3, alpha);
if (ProcessTwoRows) {
Row1Block0 = vmulq_n_f32(Row1Block0, alpha);
Row1Block1 = vmulq_n_f32(Row1Block1, alpha);
Row1Block2 = vmulq_n_f32(Row1Block2, alpha);
Row1Block3 = vmulq_n_f32(Row1Block3, alpha);
}
if (CountN >= 16) {
//
// Store the entire output block.
//
if (!ZeroMode) {
Row0Block0 = vaddq_f32(Row0Block0, vld1q_f32(C));
Row0Block1 = vaddq_f32(Row0Block1, vld1q_f32(C + 4));
Row0Block2 = vaddq_f32(Row0Block2, vld1q_f32(C + 8));
Row0Block3 = vaddq_f32(Row0Block3, vld1q_f32(C + 12));
}
vst1q_f32(C, Row0Block0);
vst1q_f32(C + 4, Row0Block1);
vst1q_f32(C + 8, Row0Block2);
vst1q_f32(C + 12, Row0Block3);
if (ProcessTwoRows) {
if (!ZeroMode) {
Row1Block0 = vaddq_f32(Row1Block0, vld1q_f32(C + ldc));
Row1Block1 = vaddq_f32(Row1Block1, vld1q_f32(C + ldc + 4));
Row1Block2 = vaddq_f32(Row1Block2, vld1q_f32(C + ldc + 8));
Row1Block3 = vaddq_f32(Row1Block3, vld1q_f32(C + ldc + 12));
}
vst1q_f32(C + ldc, Row1Block0);
vst1q_f32(C + ldc + 4, Row1Block1);
vst1q_f32(C + ldc + 8, Row1Block2);
vst1q_f32(C + ldc + 12, Row1Block3);
}
} else {
//
// Store the partial output block.
//
if ((CountN & 8) != 0) {
if (!ZeroMode) {
Row0Block0 = vaddq_f32(Row0Block0, vld1q_f32(C));
Row0Block1 = vaddq_f32(Row0Block1, vld1q_f32(C + 4));
}
vst1q_f32(C, Row0Block0);
vst1q_f32(C + 4, Row0Block1);
Row0Block0 = Row0Block2;
Row0Block1 = Row0Block3;
if (ProcessTwoRows) {
if (!ZeroMode) {
Row1Block0 = vaddq_f32(Row1Block0, vld1q_f32(C + ldc));
Row1Block1 = vaddq_f32(Row1Block1, vld1q_f32(C + ldc + 4));
}
vst1q_f32(C + ldc, Row1Block0);
vst1q_f32(C + ldc + 4, Row1Block1);
Row1Block0 = Row1Block2;
Row1Block1 = Row1Block3;
}
C += 8;
}
if ((CountN & 4) != 0) {
if (!ZeroMode) {
Row0Block0 = vaddq_f32(Row0Block0, vld1q_f32(C));
}
vst1q_f32(C, Row0Block0);
Row0Block0 = Row0Block1;
if (ProcessTwoRows) {
if (!ZeroMode) {
Row1Block0 = vaddq_f32(Row1Block0, vld1q_f32(C + ldc));
}
vst1q_f32(C + ldc, Row1Block0);
Row1Block0 = Row1Block1;
}
C += 4;
}
float32x2_t Row0Block0High;
float32x2_t Row0Block0Low;
float32x2_t Row1Block0High;
float32x2_t Row1Block0Low;
Row0Block0High = vget_high_f32(Row0Block0);
Row0Block0Low = vget_low_f32(Row0Block0);
if (ProcessTwoRows) {
Row1Block0High = vget_high_f32(Row1Block0);
Row1Block0Low = vget_low_f32(Row1Block0);
}
if ((CountN & 2) != 0) {
if (!ZeroMode) {
Row0Block0Low = vadd_f32(Row0Block0Low, vld1_f32(C));
}
vst1_f32(C, Row0Block0Low);
Row0Block0Low = Row0Block0High;
if (ProcessTwoRows) {
if (!ZeroMode) {
Row1Block0Low = vadd_f32(Row1Block0Low, vld1_f32(C + ldc));
}
vst1_f32(C + ldc, Row1Block0Low);
Row1Block0Low = Row1Block0High;
}
C += 2;
}
if ((CountN & 1) != 0) {
if (!ZeroMode) {
Row0Block0Low = vadd_f32(Row0Block0Low, vld1_dup_f32(C));
}
vst1_lane_f32(C, Row0Block0Low, 0);
if (ProcessTwoRows) {
if (!ZeroMode) {
Row1Block0Low = vadd_f32(Row1Block0Low, vld1_dup_f32(C + ldc));
}
vst1_lane_f32(C + ldc, Row1Block0Low, 0);
}
}
break;
}
C += 16;
CountN -= 16;
} while (CountN > 0);
return ProcessTwoRows ? 2 : 1;
}
template<bool ZeroMode>
size_t
MlasSgemmKernel(
const float* A,
const float* B,
float* C,
size_t CountK,
size_t CountM,
size_t CountN,
size_t lda,
size_t ldc,
float alpha
)
/*++
Routine Description:
This routine is an inner kernel to compute matrix multiplication for a
set of rows.
Arguments:
A - Supplies the address of matrix A.
B - Supplies the address of matrix B. The matrix data has been packed using
MlasSgemmCopyPackB or MlasSgemmTransposePackB.
C - Supplies the address of matrix C.
CountK - Supplies the number of columns from matrix A and the number of rows
from matrix B to iterate over.
CountM - Supplies the maximum number of rows that can be processed for
matrix A and matrix C. The actual number of rows handled for this
invocation depends on the kernel implementation.
CountN - Supplies the number of columns from matrix B and matrix C to
iterate over.
lda - Supplies the first dimension of matrix A.
ldc - Supplies the first dimension of matrix C.
alpha - Supplies the scalar multiplier (see SGEMM definition).
Return Value:
Returns the number of rows handled.
--*/
{
size_t RowsHandled;
if (CountM >= 2) {
RowsHandled = MlasSgemmKernel<ZeroMode, true>(A, B, C, CountK, CountN, lda, ldc, alpha);
} else {
RowsHandled = MlasSgemmKernel<ZeroMode, false>(A, B, C, CountK, CountN, lda, ldc, alpha);
}
return RowsHandled;
}
size_t
MLASCALL
MlasSgemmKernelZero(
const float* A,
const float* B,
float* C,
size_t CountK,
size_t CountM,
size_t CountN,
size_t lda,
size_t ldc,
float alpha
)
/*++
Routine Description:
This routine is an inner kernel to compute matrix multiplication for a
set of rows.
Arguments:
A - Supplies the address of matrix A.
B - Supplies the address of matrix B. The matrix data has been packed using
MlasSgemmCopyPackB or MlasSgemmTransposePackB.
C - Supplies the address of matrix C.
CountK - Supplies the number of columns from matrix A and the number of rows
from matrix B to iterate over.
CountM - Supplies the maximum number of rows that can be processed for
matrix A and matrix C. The actual number of rows handled for this
invocation depends on the kernel implementation.
CountN - Supplies the number of columns from matrix B and matrix C to
iterate over.
lda - Supplies the first dimension of matrix A.
ldc - Supplies the first dimension of matrix C.
alpha - Supplies the scalar multiplier (see SGEMM definition).
Return Value:
Returns the number of rows handled.
--*/
{
return MlasSgemmKernel<true>(A, B, C, CountK, CountM, CountN, lda, ldc, alpha);
}
size_t
MLASCALL
MlasSgemmKernelAdd(
const float* A,
const float* B,
float* C,
size_t CountK,
size_t CountM,
size_t CountN,
size_t lda,
size_t ldc,
float alpha
)
/*++
Routine Description:
This routine is an inner kernel to compute matrix multiplication for a
set of rows.
Arguments:
A - Supplies the address of matrix A.
B - Supplies the address of matrix B. The matrix data has been packed using
MlasSgemmCopyPackB or MlasSgemmTransposePackB.
C - Supplies the address of matrix C.
CountK - Supplies the number of columns from matrix A and the number of rows
from matrix B to iterate over.
CountM - Supplies the maximum number of rows that can be processed for
matrix A and matrix C. The actual number of rows handled for this
invocation depends on the kernel implementation.
CountN - Supplies the number of columns from matrix B and matrix C to
iterate over.
lda - Supplies the first dimension of matrix A.
ldc - Supplies the first dimension of matrix C.
alpha - Supplies the scalar multiplier (see SGEMM definition).
Return Value:
Returns the number of rows handled.
--*/
{
return MlasSgemmKernel<false>(A, B, C, CountK, CountM, CountN, lda, ldc, alpha);
}