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authorRonald S. Bultje <rsbultje@gmail.com>2013-01-20 13:20:30 -0800
committerRonald S. Bultje <rsbultje@gmail.com>2013-01-22 11:55:42 -0800
commit42d324694883cdf1fff1612ac70fa403692a1ad4 (patch)
tree99b6a8629388614ec2395c847b79a2c448583341 /libavcodec/arm/dsputil_vfp.S
parent55aa03b9f8f11ebb7535424cc0e5635558590f49 (diff)
floatdsp: move vector_fmul_reverse from dsputil to avfloatdsp.
Now, nellymoserenc and aacenc no longer depends on dsputil. Independent of this patch, wmaprodec also does not depend on dsputil, so I removed it from there also.
Diffstat (limited to 'libavcodec/arm/dsputil_vfp.S')
-rw-r--r--libavcodec/arm/dsputil_vfp.S106
1 files changed, 0 insertions, 106 deletions
diff --git a/libavcodec/arm/dsputil_vfp.S b/libavcodec/arm/dsputil_vfp.S
deleted file mode 100644
index 9df955dbf9..0000000000
--- a/libavcodec/arm/dsputil_vfp.S
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Copyright (c) 2008 Siarhei Siamashka <ssvb@users.sourceforge.net>
- *
- * This file is part of Libav.
- *
- * Libav is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * Libav is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "config.h"
-#include "libavutil/arm/asm.S"
-
-/*
- * VFP is a floating point coprocessor used in some ARM cores. VFP11 has 1 cycle
- * throughput for almost all the instructions (except for double precision
- * arithmetics), but rather high latency. Latency is 4 cycles for loads and 8 cycles
- * for arithmetic operations. Scheduling code to avoid pipeline stalls is very
- * important for performance. One more interesting feature is that VFP has
- * independent load/store and arithmetics pipelines, so it is possible to make
- * them work simultaneously and get more than 1 operation per cycle. Load/store
- * pipeline can process 2 single precision floating point values per cycle and
- * supports bulk loads and stores for large sets of registers. Arithmetic operations
- * can be done on vectors, which allows to keep the arithmetics pipeline busy,
- * while the processor may issue and execute other instructions. Detailed
- * optimization manuals can be found at http://www.arm.com
- */
-
-/**
- * ARM VFP optimized implementation of 'vector_fmul_reverse_c' function.
- * Assume that len is a positive number and is multiple of 8
- */
-@ void ff_vector_fmul_reverse_vfp(float *dst, const float *src0,
-@ const float *src1, int len)
-function ff_vector_fmul_reverse_vfp, export=1
- vpush {d8-d15}
- add r2, r2, r3, lsl #2
- vldmdb r2!, {s0-s3}
- vldmia r1!, {s8-s11}
- vldmdb r2!, {s4-s7}
- vldmia r1!, {s12-s15}
- vmul.f32 s8, s3, s8
- vmul.f32 s9, s2, s9
- vmul.f32 s10, s1, s10
- vmul.f32 s11, s0, s11
-1:
- subs r3, r3, #16
- it ge
- vldmdbge r2!, {s16-s19}
- vmul.f32 s12, s7, s12
- it ge
- vldmiage r1!, {s24-s27}
- vmul.f32 s13, s6, s13
- it ge
- vldmdbge r2!, {s20-s23}
- vmul.f32 s14, s5, s14
- it ge
- vldmiage r1!, {s28-s31}
- vmul.f32 s15, s4, s15
- it ge
- vmulge.f32 s24, s19, s24
- it gt
- vldmdbgt r2!, {s0-s3}
- it ge
- vmulge.f32 s25, s18, s25
- vstmia r0!, {s8-s13}
- it ge
- vmulge.f32 s26, s17, s26
- it gt
- vldmiagt r1!, {s8-s11}
- itt ge
- vmulge.f32 s27, s16, s27
- vmulge.f32 s28, s23, s28
- it gt
- vldmdbgt r2!, {s4-s7}
- it ge
- vmulge.f32 s29, s22, s29
- vstmia r0!, {s14-s15}
- ittt ge
- vmulge.f32 s30, s21, s30
- vmulge.f32 s31, s20, s31
- vmulge.f32 s8, s3, s8
- it gt
- vldmiagt r1!, {s12-s15}
- itttt ge
- vmulge.f32 s9, s2, s9
- vmulge.f32 s10, s1, s10
- vstmiage r0!, {s24-s27}
- vmulge.f32 s11, s0, s11
- it ge
- vstmiage r0!, {s28-s31}
- bgt 1b
-
- vpop {d8-d15}
- bx lr
-endfunc