generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mips: port optimizations to mips n64

Browse Source 
This mainly consists of replacing all the pointer arithmatic 'addiu'
instructions with PTR_ADDIU which will handle the differences in pointer
sizes when compiled on 64 bit mips systems.

The header asmdefs.h contains the PTR_ macros which expend to the correct mips
instructions to manipulate registers containing pointers.

Signed-off-by: James Cowgill <james410@cowgill.org.uk>
Reviewed-by: Nedeljko Babic <Nedeljko.Babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
James Cowgill
2015-03-05 17:40:15 +00:00
committed by Michael Niedermayer
parent eae13eae9d
commit 157d6f0d5b
20 changed files with 247 additions and 178 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
libavcodec/mips/fft_mips.c
View File

@@ -50,6 +50,7 @@
#include "config.h"
#include "libavcodec/fft.h"
#include "libavcodec/fft_table.h"
#include "libavutil/mips/asmdefs.h"
/**
* FFT transform
@@ -368,14 +369,14 @@ static void ff_imdct_half_mips(FFTContext *s, FFTSample *output, const FFTSample
"mul.s %[temp11], %[temp5], %[temp6] \t\n"
"mul.s %[temp12], %[temp5], %[temp7] \t\n"
"lwc1 %[temp8], 0(%[in3]) \t\n"
"addiu %[tcos1], %[tcos1], 8 \t\n"
"addiu %[tsin1], %[tsin1], 8 \t\n"
"addiu %[in1], %[in1], 16 \t\n"
PTR_ADDIU " %[tcos1], %[tcos1], 8 \t\n"
PTR_ADDIU " %[tsin1], %[tsin1], 8 \t\n"
PTR_ADDIU " %[in1], %[in1], 16 \t\n"
"nmsub.s %[temp11], %[temp11], %[temp8], %[temp7] \t\n"
"madd.s %[temp12], %[temp12], %[temp8], %[temp6] \t\n"
"addiu %[in2], %[in2], -16 \t\n"
"addiu %[in3], %[in3], 16 \t\n"
"addiu %[in4], %[in4], -16 \t\n"
PTR_ADDIU " %[in2], %[in2], -16 \t\n"
PTR_ADDIU " %[in3], %[in3], 16 \t\n"
PTR_ADDIU " %[in4], %[in4], -16 \t\n"
: [temp1]"=&f"(temp1), [temp2]"=&f"(temp2),
[temp3]"=&f"(temp3), [temp4]"=&f"(temp4),