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* x86: replace explicit REP_RETs with RETsLynne2023-02-01
| | | | | | | | | | | | | | | | | | | From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) x86inc can automatically determine whether to use REP_RET rather than REP in most of these cases, so impact is minimal. Additionally, a few REP_RETs were used unnecessary, despite the return being nowhere near a branch. The only CPUs affected were AMD K10s, made between 2007 and 2011, 16 years ago and 12 years ago, respectively. In the future, everyone involved with x86inc should consider dropping REP_RETs altogether.
* avcodec/x86/fft: Remove obsolete 3dnow functionsAndreas Rheinhardt2022-06-22
| | | | | | | | | | | x64 always has MMX, MMXEXT, SSE and SSE2 and this means that some functions for MMX, MMXEXT, SSE and 3dnow are always overridden by other functions (unless one e.g. explicitly disables SSE2). So given that the only systems which benefit from the 3dnow implementations are truely ancient 32bit AMD x86s they are removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
* avcodec/fft: fix INTERL macro on 3dnowMikulas Patocka2017-11-25
| | | | | | | | | | | | | The commit b7c16a3f2c4921f613319938b8ee0e3d6fa83e8d ("x86: fft: Port to cpuflags") breaks the opus decoder in ffmpeg when compiling for 3dnow. The output is audible, but there's a lot of noise. The reason for the breakage is that the commit unintentionally changed the INTERL macro so that it is empty when compiling for 3dnow. This patch fixes it. Signed-off-by: Mikulas Patocka <mikulas@twibright.com> Signed-off-by: James Almer <jamrial@gmail.com>
* Merge commit '681a86aba6cb09b98ad716d986182060c7795d20'James Almer2017-10-21
|\ | | | | | | | | | | | | * commit '681a86aba6cb09b98ad716d986182060c7795d20': x86: fft: Port to cpuflags Merged-by: James Almer <jamrial@gmail.com>
| * x86: fft: Port to cpuflagsDiego Biurrun2017-03-14
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| * x86: Merge align directives into SECTION_RODATA declarations where possibleDiego Biurrun2017-03-05
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| * fft: Split MDCT bits off from FFTDiego Biurrun2016-03-01
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| * x86inc: Drop SECTION_TEXT macroHenrik Gramner2015-08-11
| | | | | | | | | | | | | | The .text section is already 16-byte aligned by default on all supported platforms so `SECTION_TEXT` isn't any different from `SECTION .text`. Signed-off-by: Anton Khirnov <anton@khirnov.net>
* | avcodec: Extend fft to size 2^17Michael Niedermayer2016-03-04
| | | | | | | | | | | | Asked-for-by: durandal_1707 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* | x86inc: Drop SECTION_TEXT macroHenrik Gramner2015-08-04
| | | | | | | | | | The .text section is already 16-byte aligned by default on all supported platforms so `SECTION_TEXT` isn't any different from `SECTION .text`.
* | Revert "Move struc FFTContext below SECTION_RODATA"Timothy Gu2015-05-28
| | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 599888a48040f4086c9086aae958b7231b37afcc. The commit does not silence the warning on ELF-based systems, and will be fixed in the subsequent commit. Conflicts: libavcodec/x86/fft_mmx.asm Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | x86: sbrdsp/fft: reuse ps_neg constantChristophe Gisquet2014-08-06
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | x86: Fix compilation with nasm on PPC & OS/2Ronald S. Bultje2013-10-08
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | Merge commit 'bbe4a6db44f0b55b424a5cc9d3e89cd88e250450'Michael Niedermayer2013-10-08
|\| | | | | | | | | | | | | * commit 'bbe4a6db44f0b55b424a5cc9d3e89cd88e250450': x86inc: Utilize the shadow space on 64-bit Windows Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * x86inc: Utilize the shadow space on 64-bit WindowsHenrik Gramner2013-10-07
| | | | | | | | | | | | | | | | | | Store XMM6 and XMM7 in the shadow space in functions that clobbers them. This way we don't have to adjust the stack pointer as often, reducing the number of instructions as well as code size. Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
| * build: Drop AVX assembly ifdefsDiego Biurrun2012-11-11
| | | | | | | | An assembler able to cope with AVX instructions is now required.
* | Merge commit '9221efef7968463f3e3d9ce79ea72eaca082e73f'Michael Niedermayer2012-11-03
|\| | | | | | | | | | | | | | | | | | | | | | | * commit '9221efef7968463f3e3d9ce79ea72eaca082e73f': lavf: fix av_interleaved_write_frame() doxy. lavf: clarify the lifetime of demuxed packets. avconv: do not free muxed packet on streamcopy. crc: move doxy to the header vf_drawtext: do not use deprecated av_tree_node_size x86: Refactor PSWAPD fallback implementations and port to cpuflags Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * x86: Refactor PSWAPD fallback implementations and port to cpuflagsDiego Biurrun2012-11-02
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| * x86: yasm: Use complete source path for macro helper %includesDiego Biurrun2012-10-31
| | | | | | | | | | This is more consistent with the way we handle C #includes and it simplifies the build system.
* | Merge commit '6860b4081d046558c44b1b42f22022ea341a2a73'Michael Niedermayer2012-10-31
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * commit '6860b4081d046558c44b1b42f22022ea341a2a73': x86: include x86inc.asm in x86util.asm cng: Reindent some incorrectly indented lines cngdec: Allow flushing the decoder cngdec: Make the dbov variable have the right unit cngdec: Fix the memset size to cover the full array cngdec: Update the LPC coefficients after averaging the reflection coefficients configure: fix print_config() with broke awks Conflicts: libavcodec/x86/ac3dsp.asm libavcodec/x86/dct32.asm libavcodec/x86/deinterlace.asm libavcodec/x86/dsputil.asm libavcodec/x86/dsputilenc.asm libavcodec/x86/fft.asm libavcodec/x86/fmtconvert.asm libavcodec/x86/h264_chromamc.asm libavcodec/x86/h264_deblock.asm libavcodec/x86/h264_deblock_10bit.asm libavcodec/x86/h264_idct.asm libavcodec/x86/h264_idct_10bit.asm libavcodec/x86/h264_intrapred.asm libavcodec/x86/h264_intrapred_10bit.asm libavcodec/x86/h264_weight.asm libavcodec/x86/vc1dsp.asm libavcodec/x86/vp3dsp.asm libavcodec/x86/vp56dsp.asm libavcodec/x86/vp8dsp.asm Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * x86: include x86inc.asm in x86util.asmDiego Biurrun2012-10-31
| | | | | | | | This is necessary to allow refactoring some x86util macros with cpuflags.
* | Merge remote-tracking branch 'qatar/master'Michael Niedermayer2012-08-31
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * qatar/master: MSS1 and MSS2: set final pixel format after common stuff has been initialised MSS2 decoder configure: handle --disable-asm before check_deps x86: Split inline and external assembly #ifdefs configure: x86: Separate inline from standalone assembler capabilities pktdumper: Use a custom define instead of PATH_MAX for buffers pktdumper: Use av_strlcpy instead of strncpy pktdumper: Use sizeof(variable) instead of the direct buffer length Conflicts: Changelog configure libavcodec/allcodecs.c libavcodec/avcodec.h libavcodec/codec_desc.c libavcodec/dct-test.c libavcodec/imgconvert.c libavcodec/mss12.c libavcodec/version.h libavfilter/x86/gradfun.c libswscale/x86/yuv2rgb.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * x86: Split inline and external assembly #ifdefsDiego Biurrun2012-08-31
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* | Merge commit 'd488c3bcbaf7ddda42597e014deb661a7e9e2112'Michael Niedermayer2012-08-29
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * commit 'd488c3bcbaf7ddda42597e014deb661a7e9e2112': configure: support Bitrig OS yuv2rgb: handle line widths that are not a multiple of 4. graph2dot: Use the fallback getopt implementation if needed tools: Include io.h for open/read/write/close if unistd.h doesn't exist testprogs: Remove unused includes qt-faststart: Use other seek/tell functions on MSVC than on mingw ismindex: Include direct.h for _mkdir on windows sdp: Use static const char arrays instead of pointers to strings x86: avcodec: Drop silly "_mmx" suffixes from filenames x86: avcodec: Drop silly "_sse" suffixes from filenames sdp: Include profile-level-id for H264 utvideoenc: use ff_huff_gen_len_table huffman: add ff_huff_gen_len_table cllc: simplify/fix swapped data buffer allocation. rtpdec_h264: Don't set the pixel format h264: Check that the codec isn't null before accessing it audio_frame_queue: Define af_queue_log_state before using it Conflicts: libavcodec/audio_frame_queue.c libavcodec/h264.c libavcodec/huffman.h libavcodec/huffyuv.c libavcodec/utvideoenc.c libavcodec/x86/Makefile Merged-by: Michael Niedermayer <michaelni@gmx.at>
* x86: avcodec: Drop silly "_mmx" suffixes from filenamesDiego Biurrun2012-08-28
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