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simd: organise SIMD-functions

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* optimize dot product
This commit is contained in:
Recep Aslantas
2019-01-24 10:17:49 +03:00
parent be6aa9a89a
commit 31bb303c55
10 changed files with 259 additions and 126 deletions
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28
include/cglm/vec4.h
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@@ -200,24 +200,8 @@ glm_vec4_one(vec4 v) {
CGLM_INLINE
float
glm_vec4_dot(vec4 a, vec4 b) {
#if (defined(__SSE4_1__) || defined(__SSE4_2__)) && defined(CGLM_SSE4_DOT)
return _mm_cvtss_f32(_mm_dp_ps(glmm_load(a), glmm_load(b), 0xFF));
#elif defined(__SSE3__) && defined(CGLM_SSE3_DOT)
__m128 x0, x1;
x0 = _mm_mul_ps(glmm_load(a), glmm_load(b));
x1 = _mm_hadd_ps(x0, x0);
return _mm_cvtss_f32(_mm_hadd_ps(x1, x1));
#elif defined(__SSE__) || defined(__SSE2__)
__m128 x0;
x0 = _mm_mul_ps(glmm_load(a), glmm_load(b));
x0 = _mm_add_ps(x0, glmm_shuff1(x0, 1, 0, 3, 2));
return _mm_cvtss_f32(_mm_add_ss(x0, glmm_shuff1(x0, 0, 1, 0, 1)));
#elif defined(CGLM_NEON_FP)
float32x4_t v0, v1, v2;
v0 = vmulq_f32(vld1q_f32(a), vld1q_f32(b));
v1 = vaddq_f32(v0, vrev64q_f32(v0));
v2 = vaddq_f32(v1, vcombine_f32(vget_high_f32(v1), vget_low_f32(v1)));
return vgetq_lane_f32(v2, 0);
#if defined(CGLM_SIMD)
return glmm_dot(glmm_load(a), glmm_load(b));
#else
return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
#endif
@@ -250,10 +234,8 @@ glm_vec4_norm2(vec4 v) {
CGLM_INLINE
float
glm_vec4_norm(vec4 v) {
#if defined( __SSE__ ) || defined( __SSE2__ )
__m128 x0;
x0 = glmm_load(v);
return _mm_cvtss_f32(_mm_sqrt_ss(glmm_dot(x0, x0)));
#if defined(CGLM_SIMD)
return glmm_norm(glmm_load(v));
#else
return sqrtf(glm_vec4_dot(v, v));
#endif
@@ -663,7 +645,7 @@ glm_vec4_normalize_to(vec4 v, vec4 dest) {
float dot;
x0 = glmm_load(v);
xdot = glmm_dot(x0, x0);
xdot = glmm_vdot(x0, x0);
dot = _mm_cvtss_f32(xdot);
if (dot == 0.0f) {