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llvmpipe: minor cleanup of sse2 for calc_fixed_position 

Just slightly simpler assembly.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Roland Scheidegger 2016-01-31 01:27:09 +01:00
parent 8aa168eb8f
commit 9d2a34e105
1 changed files with 5 additions and 6 deletions
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11
src/gallium/drivers/llvmpipe/lp_setup_tri.c
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@ -984,17 +984,16 @@ calc_fixed_position(struct lp_setup_context *setup,
* Both should be acceptable, I think.
*/
#if defined(PIPE_ARCH_SSE)
__m128d v0r, v1r, v2r;
__m128 v0r, v1r;
__m128 vxy0xy2, vxy1xy0;
__m128i vxy0xy2i, vxy1xy0i;
__m128i dxdy0120, x0x2y0y2, x1x0y1y0, x0120, y0120;
__m128 pix_offset = _mm_set1_ps(setup->pixel_offset);
__m128 fixed_one = _mm_set1_ps((float)FIXED_ONE);
v0r = _mm_load_sd((const double *)v0[0]);
v1r = _mm_load_sd((const double *)v1[0]);
v2r = _mm_load_sd((const double *)v2[0]);
vxy0xy2 = _mm_castpd_ps(_mm_unpacklo_pd(v0r, v2r));
vxy1xy0 = _mm_castpd_ps(_mm_unpacklo_pd(v1r, v0r));
v0r = _mm_castpd_ps(_mm_load_sd((double *)v0[0]));
vxy0xy2 = _mm_loadh_pi(v0r, (__m64 *)v2[0]);
v1r = _mm_castpd_ps(_mm_load_sd((double *)v1[0]));
vxy1xy0 = _mm_movelh_ps(v1r, vxy0xy2);
vxy0xy2 = _mm_sub_ps(vxy0xy2, pix_offset);
vxy1xy0 = _mm_sub_ps(vxy1xy0, pix_offset);
vxy0xy2 = _mm_mul_ps(vxy0xy2, fixed_one);