1. 13 Mar, 2017 16 commits
  2. 12 Mar, 2017 2 commits
    • Martin Möhrmann's avatar
      strconv: fix performance regression in integer formatting on 32bit platforms · b71ed4ed
      Martin Möhrmann authored
      Some of the changes in CL golang.org/cl/38071/ assumed that / and %
      could always be combined to use only one DIV instruction. However,
      this is not the case for 64bit operands on a 32bit platform which use
      seperate runtime functions to calculate division and modulo.
      
      This CL restores the original optimizations that help on 32bit platforms
      with negligible impact on 64bit platforms.
      
      386:
      name          old time/op  new time/op  delta
      FormatInt-2   6.06µs ± 0%  6.02µs ± 0%  -0.70%  (p=0.000 n=20+20)
      AppendInt-2   4.98µs ± 0%  4.98µs ± 0%    ~     (p=0.747 n=18+18)
      FormatUint-2  1.93µs ± 0%  1.85µs ± 0%  -4.19%  (p=0.000 n=20+20)
      AppendUint-2  1.71µs ± 0%  1.64µs ± 0%  -3.68%  (p=0.000 n=20+20)
      
      amd64:
      name          old time/op  new time/op  delta
      FormatInt-2   2.41µs ± 0%  2.41µs ± 0%  -0.09%  (p=0.010 n=18+18)
      AppendInt-2   1.77µs ± 0%  1.77µs ± 0%  +0.08%  (p=0.000 n=18+18)
      FormatUint-2   653ns ± 1%   653ns ± 0%    ~     (p=0.178 n=20+20)
      AppendUint-2   514ns ± 0%   513ns ± 0%  -0.13%  (p=0.000 n=20+17)
      
      Change-Id: I574a18e54fb41b25fbe51ce696e7a8765abc79a6
      Reviewed-on: https://go-review.googlesource.com/38051
      Run-TryBot: Martin Möhrmann <moehrmann@google.com>
      TryBot-Result: Gobot Gobot <gobot@golang.org>
      Reviewed-by: 's avatarRobert Griesemer <gri@golang.org>
      b71ed4ed
    • Matthew Dempsky's avatar
      cmd/link: eliminate markextra · d3434782
      Matthew Dempsky authored
      This appears to be leftover from when instruction selection happened
      in the linker. Many of the morestackX functions listed don't even
      exist anymore.
      
      Now that we select instructions within the compiler and assembler,
      normal deadcode elimination mechanisms should suffice for these
      symbols.
      
      Change-Id: I2cb1e435101392e7c983957c4acfbbcc87a5ca7d
      Reviewed-on: https://go-review.googlesource.com/38077
      Run-TryBot: Matthew Dempsky <mdempsky@google.com>
      TryBot-Result: Gobot Gobot <gobot@golang.org>
      Reviewed-by: 's avatarBrad Fitzpatrick <bradfitz@golang.org>
      d3434782
  3. 11 Mar, 2017 4 commits
  4. 10 Mar, 2017 9 commits
  5. 09 Mar, 2017 9 commits