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simd, sse: optimize mat4 mul-v with sse

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* re-oder instructions for ILP
This commit is contained in:
Recep Aslantas
2021-05-01 02:17:34 +03:00
parent a90f706e12
commit 3673622cc3
1 changed files with 17 additions and 8 deletions
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25
include/cglm/simd/sse2/mat4.h
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@@ -89,15 +89,24 @@ glm_mat4_mul_sse2(mat4 m1, mat4 m2, mat4 dest) {
CGLM_INLINE
void
glm_mat4_mulv_sse2(mat4 m, vec4 v, vec4 dest) {
__m128 x0, x1;
__m128 x0, x1, m0, m1, m2, m3, v0, v1, v2, v3;
m0 = glmm_load(m[0]);
m1 = glmm_load(m[1]);
m2 = glmm_load(m[2]);
m3 = glmm_load(m[3]);
x0 = glmm_load(v);
x1 = glmm_fmadd(glmm_load(m[0]), glmm_splat(x0, 0),
glmm_fmadd(glmm_load(m[1]), glmm_splat(x0, 1),
glmm_fmadd(glmm_load(m[2]), glmm_splat(x0, 2),
_mm_mul_ps(glmm_load(m[3]),
glmm_splat(x0, 3)))));
v0 = glmm_splat_x(x0);
v1 = glmm_splat_y(x0);
v2 = glmm_splat_z(x0);
v3 = glmm_splat_w(x0);
x1 = _mm_mul_ps(m3, v3);
x1 = glmm_fmadd(m2, v2, x1);
x1 = glmm_fmadd(m1, v1, x1);
x1 = glmm_fmadd(m0, v0, x1);
glmm_store(dest, x1);
}