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Les articles publiés sur le site

• Revise the 2-pass algorithm

  13 octobre 2015, par Anton Mitrofanov

  Revise the 2-pass algorithm
  

  • [DH] encoder/encoder.c
  • [DH] encoder/ratecontrol.c

• x86inc : Use more consistent indentation

  12 octobre 2015, par Henrik Gramner

  x86inc: Use more consistent indentation
  

  • [DH] common/x86/x86inc.asm

• x86inc : Preserve arguments when allocating stack space

  12 octobre 2015, par Henrik Gramner

  x86inc: Preserve arguments when allocating stack space
  
  When allocating stack space with a larger alignment than the known stack
  alignment a temporary register is used for storing the stack pointer.
  Ensure that this isn't one of the registers used for passing arguments.
  

  • [DH] common/x86/x86inc.asm

• x86inc : Add debug symbols indicating sizes of compiled functions

  12 octobre 2015, par Geza Lore

  x86inc: Add debug symbols indicating sizes of compiled functions
  
  Some debuggers/profilers use this metadata to determine which function a
  given instruction is in; without it they get can confused by local labels
  (if you haven't stripped those). On the other hand, some tools are still
  confused even with this metadata. e.g. this fixes `gdb`, but not `perf`.
  
  Currently only implemented for ELF.
  

  • [DH] common/x86/x86inc.asm
  • [DH] tools/checkasm-a.asm

• x86 : Avoid some bypass delays and false dependencies

  11 octobre 2015, par Henrik Gramner

  x86: Avoid some bypass delays and false dependencies
  
  A bypass delay of 1-3 clock cycles may occur on some CPUs when transitioning
  between int and float domains, so try to avoid that if possible.
  

  • [DH] common/x86/deblock-a.asm
  • [DH] common/x86/mc-a.asm
  • [DH] common/x86/pixel-a.asm
  • [DH] common/x86/predict-a.asm
  • [DH] common/x86/sad-a.asm
  • [DH] common/x86/x86util.asm