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  1. 19 Apr, 2017 15 commits
  3. 18 Apr, 2017 21 commits
  5. 17 Apr, 2017 4 commits
    • Keith Randall's avatar
      cmd/compile: implement non-constant rotates · 7e07e635
      Keith Randall authored 
      Makes math/bits.Rotate{Left,Right} fast on amd64.

name              old time/op  new time/op  delta
RotateLeft-12     7.42ns ± 6%  5.45ns ± 6%  -26.54%   (p=0.000 n=9+10)
RotateLeft8-12    4.77ns ± 5%  3.42ns ± 7%  -28.25%   (p=0.000 n=8+10)
RotateLeft16-12   4.82ns ± 8%  3.40ns ± 7%  -29.36%  (p=0.000 n=10+10)
RotateLeft32-12   4.87ns ± 7%  3.48ns ± 7%  -28.51%    (p=0.000 n=8+9)
RotateLeft64-12   5.23ns ±10%  3.35ns ± 6%  -35.97%   (p=0.000 n=9+10)
RotateRight-12    7.59ns ± 8%  5.71ns ± 1%  -24.72%   (p=0.000 n=10+8)
RotateRight8-12   4.98ns ± 7%  3.36ns ± 9%  -32.55%  (p=0.000 n=10+10)
RotateRight16-12  5.12ns ± 2%  3.45ns ± 5%  -32.62%  (p=0.000 n=10+10)
RotateRight32-12  4.80ns ± 6%  3.42ns ±16%  -28.68%  (p=0.000 n=10+10)
RotateRight64-12  4.78ns ± 6%  3.42ns ± 6%  -28.50%  (p=0.000 n=10+10)

Update #18940

Change-Id: Ie79fb5581c489ed4d3b859314c5e669a134c119b
Reviewed-on: https://go-review.googlesource.com/39711
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarJosh Bleecher Snyder <josharian@gmail.com>
      7e07e635
    • Austin Clements's avatar
      runtime: make internal CallersFrames-equivalent that doesn't escape PC slice · 38521004
      Austin Clements authored 
      The Frames API forces the PC slice to escape to the heap because it
stores it in the Frames object. However, we'd like to use this API for
call stack expansion internally in the runtime in places where it
would be very good to avoid heap allocation.

This commit makes this possible by pulling the bulk of the Frames
implementation into an internal frameExpander API. The key difference
between these APIs is that the frameExpander does not hold the PC
slice; instead, the caller is responsible for threading the PC slice
through the frameExpander API calls. This makes it possible to keep
the PC slice on the stack. The Frames API then becomes a thin shim
around the frameExpander that keeps the PC slice in the Frames object.

Change-Id: If6b2d0b9132a2a905a0cf5deced9feddce76fc0e
Reviewed-on: https://go-review.googlesource.com/40610
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarDavid Lazar <lazard@golang.org>
      38521004
    • Andy Balholm's avatar
      net/http: ignore extra space between response version and status code · 668cca6c
      Andy Balholm authored 
      Reading a response with a status line like "HTTP/1.0  401 Unauthorized"
(with two spaces after the version) has been returning an error. Now the
extra space will be ignored.

Fixes #19989

Change-Id: I0c88a6ef7562ba80e2e2635be2070dd1b5b671a7
Reviewed-on: https://go-review.googlesource.com/40933Reviewed-by: 's avatarBrad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      668cca6c
    • Michael Hudson-Doyle's avatar
      cmd/link: only include the version info and export data in ABI hash · 533ed967
      Michael Hudson-Doyle authored 
      Previously the "ABI hash" for a package (used to determine if a loaded shared
library has the ABI expected by its loader) was the hash of the entire
__.PKGDEF file. But that means it depends on the build ID generated by the go
tool for the package, which means that if a file is added (even a .c or .h
file!) to the package, the ABI changes, perhaps uncessarily.

Fixes #19920

Change-Id: If919481e1a03afb350c8a9c7a0666bb90ee90270
Reviewed-on: https://go-review.googlesource.com/40401
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarIan Lance Taylor <iant@golang.org>
      533ed967