Xiph.org - flac.git/summary

Les articles publiés sur le site

• Check if compiler supports target attribute on ppc64

  9 juillet 2018, par Amitay Isaacs

  Check if compiler supports target attribute on ppc64
  
  Check if the compiler supports __attribute__((target("cpu=power8")))
  and __attribute__((target("cpu=power9")))
  
  Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>
  

  • [DH] configure.ac

• configure.ac : Fix FLAC__CPU_PPC on little endian, and add FLAC__CPU_PPC64

  8 juillet 2018, par Anton Blanchard

  configure.ac: Fix FLAC__CPU_PPC on little endian, and add FLAC__CPU_PPC64
  
  FLAC__CPU_PPC wasn't catching powerpcle or powerpc64le. Fix that and
  add a new define for FLAC__CPU_PPC64.
  
  Signed-off-by: Anton Blanchard <anton@ozlabs.org>
  

  • [DH] configure.ac

• configure.ac : Add VSX enable/disable

  8 juillet 2018, par Anton Blanchard

  configure.ac: Add VSX enable/disable
  
  We want to create functions with PowerPC VSX instructions, so add
  a configure check.
  
  Signed-off-by: Anton Blanchard <anton@ozlabs.org>
  

  • [DH] configure.ac

• Add VSX optimised versions of autocorrelation loops

  7 juillet 2018, par Anton Blanchard

  Add VSX optimised versions of autocorrelation loops
  
  Add a POWER8 and POWER9 version of the autocorrelation functions.
  
  flac --best is about 3.3x faster on POWER9 with this patch.
  
  Signed-off-by: Anton Blanchard <anton@ozlabs.org>
  

  • [DH] src/libFLAC/Makefile.am
  • [DH] src/libFLAC/include/private/lpc.h
  • [DH] src/libFLAC/lpc_intrin_vsx.c
  • [DH] src/libFLAC/stream_encoder.c

• Add runtime detection of POWER8 and POWER9

  7 juillet 2018, par Anton Blanchard

  Add runtime detection of POWER8 and POWER9
  
  Use getauxval() to determine if we are on POWER8 or POWER9 or newer.
  POWER8 is represented by version 2.07 and POWER9 by version 3.00.
  
  Signed-off-by: Anton Blanchard <anton@ozlabs.org>
  

  • [DH] src/libFLAC/cpu.c
  • [DH] src/libFLAC/include/private/cpu.h