SIMD-Project/asmfunc3.asm at main · celestica45/SIMD-Project · GitHub

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;SIMD YMM

section .text
bits 64
default rel
global vec_SIMDY

vec_SIMDY:
    ;to access d from shadow space
    mov r10, [rsp+40]

    mov rax, rcx
    shr rcx, 3
    and rax, 7

    cmp rcx, 0
    je done_L1

L1:
    vmovdqu ymm1, [r8]
    vmovdqu ymm2, [r9]
    vmovdqu ymm3, [r10]

    vmulps ymm4, ymm2, ymm3
    vaddps ymm0, ymm4, ymm1
    vmovdqu [rdx], ymm0

    add r8, 32
    add r9, 32
    add r10, 32
    add rdx, 32
    loop L1

done_L1:
    cmp rax, 0
    je tapos

    mov rcx, rax

remainder:
    vmovss xmm1, [r8]
    vmovss xmm2, [r9]
    vmovss xmm3, [r10]

    vmulss xmm4, xmm2, xmm3
    vaddss xmm0, xmm4, xmm1
    vmovss [rdx], xmm0

    add r8, 4
    add r9, 4
    add r10, 4
    add rdx, 4
    loop remainder

tapos:
    ret