Author: post
Date: 2012-01-31 17:56:02 +0100 (Tue, 31 Jan 2012)
New Revision: 4116
Modified:
trunk/plugins/lensfun/lensfun-avx.c
Log:
Much simpler multiply in Lensfun AVX code.
Modified: trunk/plugins/lensfun/lensfun-avx.c
===================================================================
--- trunk/plugins/lensfun/lensfun-avx.c 2012-01-31 16:46:29 UTC (rev 4115)
+++ trunk/plugins/lensfun/lensfun-avx.c 2012-01-31 16:56:02 UTC (rev 4116)
@@ -235,8 +235,6 @@
__m128i _m_w = _mm_slli_epi32(_mm_set1_epi32(m_w), 8);
__m128i _m_h = _mm_slli_epi32(_mm_set1_epi32(m_h), 8);
-
- __m128i x_gt, y_gt;
/* Clamping */
x = _mm_min_epi32(x, _m_w);
@@ -260,24 +258,16 @@
int xfer[16] __attribute__ ((aligned (16)));
/* Pitch as pixels */
- __m128i pitch = _mm_set1_epi32(in->rowstride >> 2 | ((in->rowstride >>
2)<<16));
+ __m128i pitch = _mm_set1_epi32(in->rowstride >> 2);
/* Remove remainder */
__m128i tx = _mm_srai_epi32(x, 8);
__m128i ty = _mm_srai_epi32(y, 8);
/* Multiply y by pitch */
- ty = _mm_packs_epi32(ty, ty);
- __m128i ty_lo = _mm_mullo_epi16(ty, pitch);
- __m128i ty_hi = _mm_mulhi_epi16(ty, pitch);
- ty = _mm_unpacklo_epi16(ty_lo, ty_hi);
-
- /* Same to next pixel */
- ny = _mm_packs_epi32(ny, ny);
- __m128i ny_lo = _mm_mullo_epi16(ny, pitch);
- __m128i ny_hi = _mm_mulhi_epi16(ny, pitch);
- ny = _mm_unpacklo_epi16(ny_lo, ny_hi);
-
+ ty = _mm_mullo_epi32(ty, pitch);
+ ny = _mm_mullo_epi32(ny, pitch);
+
/* Add pitch and x offset */
__m128i a_offset = _mm_add_epi32(tx, ty);
__m128i b_offset = _mm_add_epi32(nx, ty);
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