[Numpy-svn] [numpy/numpy] 86316b: ENH: hint that nelem == 1 branch is more likely

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/numpy/numpy
  Commit: 86316b93e865bb06a5da14903e6f4c8330abb106
      https://github.com/numpy/numpy/commit/86316b93e865bb06a5da14903e6f4c8330abb106
  Author: Julian Taylor <jtaylor.debian at googlemail.com>
  Date:   2014-02-15 (Sat, 15 Feb 2014)

  Changed paths:
    M numpy/core/src/multiarray/arraytypes.c.src

  Log Message:
  -----------
  ENH: hint that nelem == 1 branch is more likely

improves performance for simple takes by 10%, chunked takes spend more
time copying so the less dense code matters less.


  Commit: fd4bf676686ea20bb46797a665af36d974fc8415
      https://github.com/numpy/numpy/commit/fd4bf676686ea20bb46797a665af36d974fc8415
  Author: Julian Taylor <jtaylor.debian at googlemail.com>
  Date:   2014-02-15 (Sat, 15 Feb 2014)

  Changed paths:
    M numpy/core/src/multiarray/common.h

  Log Message:
  -----------
  ENH: explicitly mark invalid index branch as unlikely

gcc already detects this as unlikely but it might profit other
compilers.


  Commit: e3f0f53685ccf5a942d7a883ea5a947c1b411aa1
      https://github.com/numpy/numpy/commit/e3f0f53685ccf5a942d7a883ea5a947c1b411aa1
  Author: Charles Harris <charlesr.harris at gmail.com>
  Date:   2014-02-15 (Sat, 15 Feb 2014)

  Changed paths:
    M numpy/core/src/multiarray/arraytypes.c.src
    M numpy/core/src/multiarray/common.h

  Log Message:
  -----------
  Merge pull request #4296 from juliantaylor/fasttake-microopt

minor fasttake performance improvement


Compare: https://github.com/numpy/numpy/compare/33337281067b...e3f0f53685cc