- 03 May, 2013 2 commits
-
-
Christophe Gisquet authored
This patch can be controversial, by assuming floats are IEEE-754 and particular behaviour of the FPU will get in the way. Timing on Arrandale and Win32 (thus, x87 FPU is used in the reference). sbr_qmf_pre_shuffle_c: 115 to 76 sbr_neg_odd_64_c: 84 to 55 sbr_qmf_post_shuffle_c: 112 to 83 Signed-off-by: Diego Biurrun <diego@biurrun.de>
-
Christophe Gisquet authored
1410 cycles to 1148 on Arrandale/Win64 Signed-off-by: Diego Biurrun <diego@biurrun.de>
-
- 08 Oct, 2012 1 commit
-
-
Janne Grunau authored
Rename the called dsp init functions to *_init_x86.
-
- 07 Mar, 2012 1 commit
-
-
Christophe GISQUET authored
The length is even, so some unrolling can be performed. Timings are for x86: - 32bits: 102c -> 82c - 64bits: 82c -> 69c Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
-
- 23 Feb, 2012 2 commits
-
-
Christophe GISQUET authored
The 32bits targets have been compiled with -mfpmath=sse for proper reference. sbr_sum_square C /32bits: 82c (unrolled)/102c C /64bits: 69c (unrolled)/82c SSE/32bits: 42c SSE/64bits: 31c Use of SSE4.1 dpps to perform the final sum is slower. Not unrolling to perform 8 operations in a loop yields 10 more cycles. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
-
Christophe GISQUET authored
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
-
- 28 Jan, 2012 2 commits
-
-
Mans Rullgard authored
Overall speedup of HE-AAC decoding 2.3x on Cortex-A8, 1.2x on A9. Signed-off-by: Mans Rullgard <mans@mansr.com>
-
Mans Rullgard authored
This prepares for assembly optimisations by moving the most time-consuming loops to functions called through pointers in a new context. Signed-off-by: Mans Rullgard <mans@mansr.com>
-