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// ldc2 -linkonce-templates -betterC -O -release -mcpu=broadwell -output-s gemm_micro_kernel_simple.d | |
import ldc.attributes; | |
import ldc.intrinsics; | |
enum prefetchShift = 512; | |
@fastmath: | |
export extern(C) nothrow @nogc @fastmath | |
auto dot_reg_basic_simple( | |
const(__vector(float[8])[2][1])* a, | |
const(float[1][6])* b, | |
size_t length, | |
ref __vector(float[8])[2][1][6] c, | |
) | |
{ | |
return dot_reg_basic_simple!()(a, b, length, c); | |
} | |
const(__vector(float[8])[2][1])* dot_reg_basic_simple() | |
( | |
const(__vector(float[8])[2][1])* a, | |
const(float[1][6])* b, | |
size_t length, | |
ref __vector(float[8])[2][1][6] c, | |
) | |
{ | |
__vector(float[8])[2][1][6] reg = void; | |
reg[0][0][0] = 0; | |
reg[0][0][1] = 0; | |
reg[1][0][0] = 0; | |
reg[1][0][1] = 0; | |
reg[2][0][0] = 0; | |
reg[2][0][1] = 0; | |
reg[3][0][0] = 0; | |
reg[3][0][1] = 0; | |
reg[4][0][0] = 0; | |
reg[4][0][1] = 0; | |
reg[5][0][0] = 0; | |
reg[5][0][1] = 0; | |
do | |
{ | |
llvm_prefetch(cast(void*) a + prefetchShift, 0, 3, 1); | |
__vector(float[8])[2][1] ai = void; | |
__vector(float[8])[1][6] bi = void; | |
ai[0][0] = a[0][0][0]; | |
ai[0][1] = a[0][0][1]; | |
bi[0][0] = b[0][0][0]; | |
bi[1][0] = b[0][1][0]; | |
reg[0][0][0] += ai[0][0] * bi[0][0]; | |
reg[0][0][1] += ai[0][1] * bi[0][0]; | |
reg[1][0][0] += ai[0][0] * bi[1][0]; | |
reg[1][0][1] += ai[0][1] * bi[1][0]; | |
bi[2][0] = b[0][2][0]; | |
bi[3][0] = b[0][3][0]; | |
reg[2][0][0] += ai[0][0] * bi[2][0]; | |
reg[2][0][1] += ai[0][1] * bi[2][0]; | |
reg[3][0][0] += ai[0][0] * bi[3][0]; | |
reg[3][0][1] += ai[0][1] * bi[3][0]; | |
bi[4][0] = b[0][4][0]; | |
bi[5][0] = b[0][5][0]; | |
reg[4][0][0] += ai[0][0] * bi[4][0]; | |
reg[4][0][1] += ai[0][1] * bi[4][0]; | |
reg[5][0][0] += ai[0][0] * bi[5][0]; | |
reg[5][0][1] += ai[0][1] * bi[5][0]; | |
a++; | |
b++; | |
length--; | |
} | |
while (length); | |
load_nano(c, reg); | |
return a; | |
} | |
auto load_nano()(ref __vector(float[8])[2][1][6] to, ref __vector(float[8])[2][1][6] from) | |
{ | |
to[0][0][0] = from[0][0][0]; | |
to[0][0][1] = from[0][0][1]; | |
to[1][0][0] = from[1][0][0]; | |
to[1][0][1] = from[1][0][1]; | |
to[2][0][0] = from[2][0][0]; | |
to[2][0][1] = from[2][0][1]; | |
to[3][0][0] = from[3][0][0]; | |
to[3][0][1] = from[3][0][1]; | |
to[4][0][0] = from[4][0][0]; | |
to[4][0][1] = from[4][0][1]; | |
to[5][0][0] = from[5][0][0]; | |
to[5][0][1] = from[5][0][1]; | |
} |
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