---
Reduces runtime of firefox-planet-gnome trace from 156 to 153 seconds on
Loongson.
Increases runtime of firefox-fishtank trace from 1030 to 1060 seconds. Why?
pixman/pixman-mmx.c | 45 ++++++++++++++++++++++++++++++++-------------
1 files changed, 32 insertions(+), 13 deletions(-)
diff --git a/pixman/pixman-mmx.c b/pixman/pixman-mmx.c
index ea732bb..bff8585 100644
--- a/pixman/pixman-mmx.c
+++ b/pixman/pixman-mmx.c
@@ -3526,11 +3526,14 @@ mmx_composite_over_reverse_n_8888
(pixman_implementation_t *imp,
}
#define BSHIFT ((1 << BILINEAR_INTERPOLATION_BITS))
+#define BMSK (BSHIFT - 1)
#define BILINEAR_DECLARE_VARIABLES
\
const __m64 mm_wt = _mm_set_pi16 (wt, wt, wt, wt);
\
const __m64 mm_wb = _mm_set_pi16 (wb, wb, wb, wb);
\
const __m64 mm_BSHIFT = _mm_set_pi16 (BSHIFT, BSHIFT, BSHIFT, BSHIFT);
\
+ const __m64 mm_addc7 = _mm_set_pi16 (0, 1, 0, 1);
\
+ const __m64 mm_xorc7 = _mm_set_pi16 (0, BMSK, 0, BMSK);
\
const __m64 mm_ux = _mm_set_pi16 (unit_x, unit_x, unit_x, unit_x);
\
const __m64 mm_zero = _mm_setzero_si64 ();
\
__m64 mm_x = _mm_set_pi16 (vx, vx, vx, vx)
@@ -3548,21 +3551,37 @@ do {
\
__m64 b_lo = _mm_mullo_pi16 (_mm_unpacklo_pi8 (b, mm_zero), mm_wb);
\
__m64 hi = _mm_add_pi16 (t_hi, b_hi);
\
__m64 lo = _mm_add_pi16 (t_lo, b_lo);
\
- /* calculate horizontal weights */
\
- __m64 mm_wh_lo = _mm_sub_pi16 (mm_BSHIFT, _mm_srli_pi16 (mm_x,
\
+ if (BILINEAR_INTERPOLATION_BITS < 8)
\
+ {
\
+ /* calculate horizontal weights */
\
+ __m64 mm_wh = _mm_add_pi16 (mm_addc7, _mm_xor_si64 (mm_xorc7,
\
+ _mm_srli_pi16 (mm_x,
\
+ 16 - BILINEAR_INTERPOLATION_BITS)));
\
+ mm_x = _mm_add_pi16 (mm_x, mm_ux);
\
+ /* horizontal interpolation */
\
+ __m64 p = _mm_unpacklo_pi16 (lo, hi);
\
+ __m64 q = _mm_unpackhi_pi16 (lo, hi);
\
+ lo = _mm_madd_pi16 (p, mm_wh);
\
+ hi = _mm_madd_pi16 (q, mm_wh);
\
+ }
\
+ else
\
+ {
\
+ /* calculate horizontal weights */
\
+ __m64 mm_wh_lo = _mm_sub_pi16 (mm_BSHIFT, _mm_srli_pi16 (mm_x,
\
16 - BILINEAR_INTERPOLATION_BITS));
\
- __m64 mm_wh_hi = _mm_srli_pi16 (mm_x,
\
+ __m64 mm_wh_hi = _mm_srli_pi16 (mm_x,
\
16 - BILINEAR_INTERPOLATION_BITS);
\
- mm_x = _mm_add_pi16 (mm_x, mm_ux);
\
- /* horizontal interpolation */
\
- __m64 mm_lo_lo = _mm_mullo_pi16 (lo, mm_wh_lo);
\
- __m64 mm_lo_hi = _mm_mullo_pi16 (hi, mm_wh_hi);
\
- __m64 mm_hi_lo = _mm_mulhi_pu16 (lo, mm_wh_lo);
\
- __m64 mm_hi_hi = _mm_mulhi_pu16 (hi, mm_wh_hi);
\
- lo = _mm_add_pi32 (_mm_unpacklo_pi16 (mm_lo_lo, mm_hi_lo),
\
- _mm_unpacklo_pi16 (mm_lo_hi, mm_hi_hi));
\
- hi = _mm_add_pi32 (_mm_unpackhi_pi16 (mm_lo_lo, mm_hi_lo),
\
- _mm_unpackhi_pi16 (mm_lo_hi, mm_hi_hi));
\
+ mm_x = _mm_add_pi16 (mm_x, mm_ux);
\
+ /* horizontal interpolation */
\
+ __m64 mm_lo_lo = _mm_mullo_pi16 (lo, mm_wh_lo);
\
+ __m64 mm_lo_hi = _mm_mullo_pi16 (hi, mm_wh_hi);
\
+ __m64 mm_hi_lo = _mm_mulhi_pu16 (lo, mm_wh_lo);
\
+ __m64 mm_hi_hi = _mm_mulhi_pu16 (hi, mm_wh_hi);
\
+ lo = _mm_add_pi32 (_mm_unpacklo_pi16 (mm_lo_lo, mm_hi_lo),
\
+ _mm_unpacklo_pi16 (mm_lo_hi, mm_hi_hi));
\
+ hi = _mm_add_pi32 (_mm_unpackhi_pi16 (mm_lo_lo, mm_hi_lo),
\
+ _mm_unpackhi_pi16 (mm_lo_hi, mm_hi_hi));
\
+ }
\
/* shift and pack the result */
\
hi = _mm_srli_pi32 (hi, BILINEAR_INTERPOLATION_BITS * 2);
\
lo = _mm_srli_pi32 (lo, BILINEAR_INTERPOLATION_BITS * 2);
\
--
1.7.3.4
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