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Power10: Fix for SBGEMM #3273

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Jun 15, 2021
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Power10: Fix for SBGEMM #3273

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34 changes: 29 additions & 5 deletions kernel/power/sbgemm_kernel_power10.c
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,30 @@ typedef FLOAT v2sf_t __attribute__ ((vector_size (8)));
rowC = (v2sf_t *) &CO[7* ldc+J]; \
rowC[0] += result[6] * alpha;

#define SAVE4x2_ACC_SCALAR(ACC) { \
__builtin_mma_disassemble_acc ((void *)result, ACC); \
res[0] = result[0] * alpha; \
res[1] = result[1] * alpha; \
res[2] = result[2] * alpha; \
res[3] = result[3] * alpha; \
CO[0 * ldc] += res[0][0]; \
CO[1 * ldc] += res[1][0]; \
CO[2 * ldc] += res[2][0]; \
CO[3 * ldc] += res[3][0]; \
}

#define SAVE4x2_ACC1_SCALAR(ACC) { \
__builtin_mma_disassemble_acc ((void *)result, ACC); \
res[0] = result[0] * alpha; \
res[1] = result[1] * alpha; \
res[2] = result[2] * alpha; \
res[3] = result[3] * alpha; \
CO[4 * ldc] += res[0][0]; \
CO[5 * ldc] += res[1][0]; \
CO[6 * ldc] += res[2][0]; \
CO[7 * ldc] += res[3][0]; \
}

#define MMA __builtin_mma_xvbf16ger2pp

#define SAVE2x4_ACC(ACC, J) \
Expand Down Expand Up @@ -313,7 +337,7 @@ CNAME (BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha, IFLOAT * A,
{
IFLOAT *BO = B;
v2sf_t *rowC;
v2sf_t result[8];
v4sf_t result[4], res[4];
__vector_quad acc0, acc1;
__builtin_mma_xxsetaccz (&acc0);
__builtin_mma_xxsetaccz (&acc1);
Expand All @@ -335,8 +359,8 @@ CNAME (BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha, IFLOAT * A,
MMA (&acc0, MERGE_HIGH (rowB[0], vzero), (vec_t) rowA);
MMA (&acc1, MERGE_LOW (rowB[0], vzero), (vec_t) rowA);
}
SAVE4x2_ACC (&acc0, 0);
SAVE4x2_ACC1 (&acc1, 0);
SAVE4x2_ACC_SCALAR (&acc0);
SAVE4x2_ACC1_SCALAR (&acc1);
CO += 1;
AO += k;
BO += (k << 3);
Expand Down Expand Up @@ -547,7 +571,7 @@ CNAME (BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha, IFLOAT * A,
{
IFLOAT *BO = B;
v2sf_t *rowC;
v2sf_t result[8];
v4sf_t result[4], res[4];
__vector_quad acc0;
BLASLONG l = 0;
__builtin_mma_xxsetaccz (&acc0);
Expand All @@ -571,7 +595,7 @@ CNAME (BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha, IFLOAT * A,
};
MMA (&acc0, (vec_t)(rowB_mrg), (vec_t) rowA);
}
SAVE4x2_ACC (&acc0, 0);
SAVE4x2_ACC_SCALAR (&acc0);
AO += k;
BO += (k << 2);
CO += 1;
Expand Down