mirror of
https://github.com/OpenMathLib/OpenBLAS
synced 2026-05-31 00:45:48 +08:00
f95e7b0e32
Setting up all the infrastructure for BGEMM support in OpenBLAS, hopefully I found all the right places. Derived mostly from the previous work done in https://github.com/OpenMathLib/OpenBLAS/pull/5287 Co-authored-by: Ye Tao <ye.tao@arm.com>
201 lines
6.2 KiB
C
201 lines
6.2 KiB
C
#include "common.h"
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#if defined(BFLOAT16) && defined(BFLOAT16CONVERSION)
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static float
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bfloat16tof32 (bfloat16 f16)
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{
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float result = 0;
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unsigned short* q = (unsigned short*)(&result);
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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q[0] = f16;
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#else
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q[1] = f16;
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#endif
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return result;
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}
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static bfloat16 f32tobfloat16(float f32) {
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unsigned short *q = (unsigned short *)(&f32);
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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return q[0];
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#else
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return q[1];
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#endif
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}
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#ifdef BGEMM
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#define ALPHA bfloat16tof32(alpha)
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#define BF16TOF32(x) (bfloat16tof32(x))
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#define F32TOBF16(x) (f32tobfloat16(x))
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#else
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#define ALPHA alpha
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#define BF16TOF32(x) (bfloat16tof32(x))
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#define F32TOBF16(x) x
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#endif
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#else
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#define ALPHA alpha
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#define BF16TOF32(x) x
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#define F32TOBF16(x) x
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#endif
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int CNAME(BLASLONG bm,BLASLONG bn,BLASLONG bk,FLOAT alpha,IFLOAT* ba,IFLOAT* bb,FLOAT* C,BLASLONG ldc
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#ifdef TRMMKERNEL
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,BLASLONG offset
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#endif
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)
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{
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BLASLONG i,j,k;
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FLOAT *C0,*C1;
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IFLOAT *ptrba,*ptrbb;
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#ifdef BGEMM
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float res0,res1,res2,res3;
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#else
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FLOAT res0,res1,res2,res3;
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#endif
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IFLOAT load0,load1,load2,load3,load4,load5,load6,load7;
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for (j=0; j<bn/2; j+=1)
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{
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C0 = C;
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C1 = C0+ldc;
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ptrba = ba;
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for (i=0; i<bm/2; i+=1)
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{
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ptrbb = bb;
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res0 = 0;
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res1 = 0;
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res2 = 0;
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res3 = 0;
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for (k=0; k<bk/4; k+=1)
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{
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load0 = ptrba[2*0+0];
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load1 = ptrbb[2*0+0];
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res0 = res0+BF16TOF32(load0)*BF16TOF32(load1);
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load2 = ptrba[2*0+1];
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res1 = res1+BF16TOF32(load2)*BF16TOF32(load1);
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load3 = ptrbb[2*0+1];
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res2 = res2+BF16TOF32(load0)*BF16TOF32(load3);
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res3 = res3+BF16TOF32(load2)*BF16TOF32(load3);
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load4 = ptrba[2*1+0];
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load5 = ptrbb[2*1+0];
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res0 = res0+BF16TOF32(load4)*BF16TOF32(load5);
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load6 = ptrba[2*1+1];
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res1 = res1+BF16TOF32(load6)*BF16TOF32(load5);
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load7 = ptrbb[2*1+1];
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res2 = res2+BF16TOF32(load4)*BF16TOF32(load7);
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res3 = res3+BF16TOF32(load6)*BF16TOF32(load7);
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load0 = ptrba[2*2+0];
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load1 = ptrbb[2*2+0];
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res0 = res0+BF16TOF32(load0)*BF16TOF32(load1);
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load2 = ptrba[2*2+1];
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res1 = res1+BF16TOF32(load2)*BF16TOF32(load1);
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load3 = ptrbb[2*2+1];
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res2 = res2+BF16TOF32(load0)*BF16TOF32(load3);
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res3 = res3+BF16TOF32(load2)*BF16TOF32(load3);
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load4 = ptrba[2*3+0];
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load5 = ptrbb[2*3+0];
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res0 = res0+BF16TOF32(load4)*BF16TOF32(load5);
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load6 = ptrba[2*3+1];
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res1 = res1+BF16TOF32(load6)*BF16TOF32(load5);
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load7 = ptrbb[2*3+1];
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res2 = res2+BF16TOF32(load4)*BF16TOF32(load7);
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res3 = res3+BF16TOF32(load6)*BF16TOF32(load7);
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ptrba = ptrba+8;
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ptrbb = ptrbb+8;
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}
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for (k=0; k<(bk&3); k+=1)
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{
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load0 = ptrba[2*0+0];
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load1 = ptrbb[2*0+0];
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res0 = res0+BF16TOF32(load0)*BF16TOF32(load1);
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load2 = ptrba[2*0+1];
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res1 = res1+BF16TOF32(load2)*BF16TOF32(load1);
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load3 = ptrbb[2*0+1];
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res2 = res2+BF16TOF32(load0)*BF16TOF32(load3);
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res3 = res3+BF16TOF32(load2)*BF16TOF32(load3);
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ptrba = ptrba+2;
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ptrbb = ptrbb+2;
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}
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res0 = res0*ALPHA;
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C0[0] = F32TOBF16(BF16TOF32(C0[0])+res0);
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res1 = res1*ALPHA;
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C0[1] = F32TOBF16(BF16TOF32(C0[1])+res1);
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res2 = res2*ALPHA;
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C1[0] = F32TOBF16(BF16TOF32(C1[0])+res2);
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res3 = res3*ALPHA;
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C1[1] = F32TOBF16(BF16TOF32(C1[1])+res3);
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C0 = C0+2;
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C1 = C1+2;
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}
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for (i=0; i<(bm&1); i+=1)
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{
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ptrbb = bb;
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res0 = 0;
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res1 = 0;
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for (k=0; k<bk; k+=1)
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{
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load0 = ptrba[0+0];
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load1 = ptrbb[2*0+0];
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res0 = res0+BF16TOF32(load0)*BF16TOF32(load1);
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load2 = ptrbb[2*0+1];
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res1 = res1+BF16TOF32(load0)*BF16TOF32(load2);
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ptrba = ptrba+1;
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ptrbb = ptrbb+2;
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}
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res0 = res0*ALPHA;
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C0[0] = F32TOBF16(BF16TOF32(C0[0])+res0);
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res1 = res1*ALPHA;
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C1[0] = F32TOBF16(BF16TOF32(C1[0])+res1);
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C0 = C0+1;
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C1 = C1+1;
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}
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k = (bk<<1);
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bb = bb+k;
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i = (ldc<<1);
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C = C+i;
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}
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for (j=0; j<(bn&1); j+=1)
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{
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C0 = C;
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ptrba = ba;
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for (i=0; i<bm/2; i+=1)
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{
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ptrbb = bb;
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res0 = 0;
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res1 = 0;
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for (k=0; k<bk; k+=1)
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{
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load0 = ptrba[2*0+0];
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load1 = ptrbb[0+0];
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res0 = res0+BF16TOF32(load0)*BF16TOF32(load1);
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load2 = ptrba[2*0+1];
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res1 = res1+BF16TOF32(load2)*BF16TOF32(load1);
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ptrba = ptrba+2;
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ptrbb = ptrbb+1;
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}
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res0 = res0*ALPHA;
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C0[0] = F32TOBF16(BF16TOF32(C0[0])+res0);
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res1 = res1*ALPHA;
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C0[1] = F32TOBF16(BF16TOF32(C0[1])+res1);
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C0 = C0+2;
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}
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for (i=0; i<(bm&1); i+=1)
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{
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ptrbb = bb;
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res0 = 0;
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for (k=0; k<bk; k+=1)
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{
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load0 = ptrba[0+0];
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load1 = ptrbb[0+0];
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res0 = res0+BF16TOF32(load0)*BF16TOF32(load1);
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ptrba = ptrba+1;
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ptrbb = ptrbb+1;
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}
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res0 = res0*ALPHA;
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C0[0] = F32TOBF16(BF16TOF32(C0[0])+res0);
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C0 = C0+1;
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}
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k = (bk<<0);
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bb = bb+k;
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C = C+ldc;
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}
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return 0;
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}
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