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  1. 22 Aug, 2017 6 commits
    • Martin Möhrmann's avatar
      strconv: check bitsize range in ParseInt and ParseUint · 63c42843
      Martin Möhrmann authored 
      Return an error when a bitSize below 0 or above 64 is specified.

Move bitSize 0 handling in ParseInt after the call to ParseUint
to avoid a spill.

AMD64:
name       old time/op  new time/op  delta
Atoi       28.9ns ± 6%  27.4ns ± 6%  -5.21%  (p=0.002 n=20+20)
AtoiNeg    24.6ns ± 2%  23.1ns ± 1%  -6.04%  (p=0.000 n=19+18)
Atoi64     38.8ns ± 1%  38.0ns ± 1%  -2.03%  (p=0.000 n=17+20)
Atoi64Neg  35.5ns ± 1%  34.3ns ± 1%  -3.42%  (p=0.000 n=19+20)

Updates #21275

Change-Id: I70f0e4a16fa003f7ea929ca4ef56bd1a4181660b
Reviewed-on: https://go-review.googlesource.com/55139Reviewed-by: 's avatarRobert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
      63c42843
    • Lakshay Garg's avatar
      math: implement the erfcinv function · 4c0bba15
      Lakshay Garg authored 
      Fixes: #6359

Change-Id: I6c697befd681a253e73a7091faa9f20ff3791201
Reviewed-on: https://go-review.googlesource.com/57090Reviewed-by: 's avatarRobert Griesemer <gri@golang.org>
      4c0bba15
    • fanzha02's avatar
      cmd/internal/obj/arm64: fix assemble movk bug · bdd7c01b
      fanzha02 authored 
      The current code gets shift arguments value from prog.From3.Offset.
But prog.From3.Offset is not assigned the shift arguments value in
instructions assemble process.

The fix calls movcon() function to get the correct value.

Uncomment the movk/movkw  cases.

Fixes #21398
Change-Id: I78d40c33c24bd4e3688a04622e4af7ddb5333fa6
Reviewed-on: https://go-review.googlesource.com/54990
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarCherry Zhang <cherryyz@google.com>
      bdd7c01b
    • Thomas Wanielista's avatar
      go/doc: classify function returning slice of T as constructor · 33484a6a
      Thomas Wanielista authored 
      Previously, go/doc would only consider functions that return types of
T or any number of pointers to T: *T, **T, etc. This change expands
the definition of a constructor to also include functions that return
slices of a type (or pointer to that type) in its first return.

With this change, the following return types classify a function
as a constructor of type T:

T
*T
**T (and so on)
[]T
[]*T
[]**T (and so on)

Fixes #18063.

Change-Id: I9a1a689933e13c6b8eb80b74ceec85bd4cab236d
Reviewed-on: https://go-review.googlesource.com/54971Reviewed-by: 's avatarRobert Griesemer <gri@golang.org>
      33484a6a
    • Brian Kessler's avatar
      math/big: use internal sqr on nats · edaa0ffa
      Brian Kessler authored 
      Replace z.mul(x, x) calls on nats in internal code with z.sqr(x)
that employs optimized squaring routines. Benchmark results:

Exp-4                             12.9ms ± 2%  12.8ms ± 3%     ~     (p=0.165 n=10+10)
Exp2-4                            13.0ms ± 4%  12.8ms ± 2%   -2.14%  (p=0.015 n=8+9)
ModSqrt225_Tonelli-4               987µs ± 4%   989µs ± 2%     ~     (p=0.673 n=8+9)
ModSqrt224_3Mod4-4                 300µs ± 2%   301µs ± 3%     ~     (p=0.546 n=9+9)
ModSqrt5430_Tonelli-4              4.88s ± 6%   4.82s ± 5%     ~     (p=0.247 n=10+10)
ModSqrt5430_3Mod4-4                1.62s ±10%   1.57s ± 1%     ~     (p=0.094 n=9+9)
Exp3Power/0x10-4                   496ns ± 7%   426ns ± 7%  -14.21%  (p=0.000 n=10+10)
Exp3Power/0x40-4                   575ns ± 5%   470ns ± 7%  -18.20%  (p=0.000 n=9+10)
Exp3Power/0x100-4                  929ns ±19%   770ns ±10%  -17.13%  (p=0.000 n=10+10)
Exp3Power/0x400-4                 1.96µs ± 7%  1.79µs ± 5%   -8.68%  (p=0.000 n=10+10)
Exp3Power/0x1000-4                10.9µs ± 9%   7.9µs ± 5%  -28.02%  (p=0.000 n=10+10)
Exp3Power/0x4000-4                86.8µs ± 8%  67.3µs ± 8%  -22.41%  (p=0.000 n=10+10)
Exp3Power/0x10000-4                750µs ± 8%   731µs ± 1%     ~     (p=0.074 n=9+8)
Exp3Power/0x40000-4               7.07ms ± 7%  7.05ms ± 4%     ~     (p=0.931 n=9+9)
Exp3Power/0x100000-4              64.7ms ± 2%  65.6ms ± 6%     ~     (p=0.661 n=9+10)
Exp3Power/0x400000-4               577ms ± 2%   580ms ± 3%     ~     (p=0.931 n=9+9)
ProbablyPrime/n=0-4               9.08ms ±17%  9.09ms ±16%     ~     (p=0.447 n=9+10)
ProbablyPrime/n=1-4               10.8ms ± 4%  10.7ms ± 2%     ~     (p=0.243 n=10+9)
ProbablyPrime/n=5-4               18.5ms ± 3%  18.5ms ± 1%     ~     (p=0.863 n=9+9)
ProbablyPrime/n=10-4              28.6ms ± 6%  28.2ms ± 1%     ~     (p=0.050 n=9+9)
ProbablyPrime/n=20-4              48.4ms ± 4%  48.4ms ± 2%     ~     (p=0.739 n=10+10)
ProbablyPrime/Lucas-4             6.75ms ± 4%  6.75ms ± 2%     ~     (p=0.963 n=9+8)
ProbablyPrime/MillerRabinBase2-4  2.00ms ± 5%  2.00ms ± 7%     ~     (p=0.931 n=9+9)

Change-Id: Ibe9f58d11dbad25eb369faedf480b666a0250a6b
Reviewed-on: https://go-review.googlesource.com/56773Reviewed-by: 's avatarRobert Griesemer <gri@golang.org>
      edaa0ffa
    • Martin Möhrmann's avatar
      cmd/compile: pass stack allocated bucket to makemap inside hmap · 06a78b57
      Martin Möhrmann authored 
      name         old time/op    new time/op    delta
NewEmptyMap    53.2ns ± 7%    48.0ns ± 5%  -9.77%  (p=0.000 n=20+20)
NewSmallMap     111ns ± 1%     106ns ± 2%  -3.78%  (p=0.000 n=20+19)

Change-Id: I979d21ab16eae9f6893873becca517db57e054b5
Reviewed-on: https://go-review.googlesource.com/56290
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarJosh Bleecher Snyder <josharian@gmail.com>
      06a78b57
  3. 21 Aug, 2017 15 commits
  5. 20 Aug, 2017 1 commit
  7. 19 Aug, 2017 7 commits
    • Elias Naur's avatar
      Revert "misc/cgo/testcshared: temporarily skip testing on android" · ff90f4af
      Elias Naur authored 
      This reverts commit a6ffab6b.

Reason for revert: with CL 57290 the tests run on Android again.

Change-Id: Ifeb29762a4cd0178463acfeeb3696884d99d2993
Reviewed-on: https://go-review.googlesource.com/57310Reviewed-by: 's avatarAlex Brainman <alex.brainman@gmail.com>
      ff90f4af
    • Elias Naur's avatar
      misc/cgo/testcshared: fix tests on android · a9e0204c
      Elias Naur authored 
      The testcshared test.bash was rewritten in Go, but the rewritten script
broke on Android. Make the tests run on Android again by:

- Restoring the LD_LIBRARY_PATH path (.).
- Restoring the Android specific C flags (-pie -fuse-ld=gold).
- Adding runExe to run test executables. All other commands must run on
the host.

Fixes #21513.

Change-Id: I3ea617a943c686b15437cc5c118e9802a913d93a
Reviewed-on: https://go-review.googlesource.com/57290
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarAlex Brainman <alex.brainman@gmail.com>
      a9e0204c
    • Alex Brainman's avatar
      misc/cgo/testcshared: temporarily skip testing on android · a6ffab6b
      Alex Brainman authored 
      For #21513

Change-Id: Ibe9479f8afc6f425779a737a807ff2f839a4f311
Reviewed-on: https://go-review.googlesource.com/57250
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarAlex Brainman <alex.brainman@gmail.com>
      a6ffab6b
    • Josh Bleecher Snyder's avatar
      .github: update ISSUE_TEMPLATE to be closer to 'go bug' · fc583c54
      Josh Bleecher Snyder authored 
      Ask whether the issue reproduces with the latest release.

'go bug' places the version and system details last,
in part because they're automatically filled.
I'd like to do the same here, but I worry
that they'll get ignored.

Change-Id: Iec636a27e6e36d61dca421deaf24ed6fe35d4b11
Reviewed-on: https://go-review.googlesource.com/50931Reviewed-by: 's avatarEmmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: 's avatarDaniel Martí <mvdan@mvdan.cc>
Reviewed-by: 's avatarAvelino <t@avelino.xxx>
      fc583c54
    • Russ Cox's avatar
      cmd/go: test and fix missing deep dependencies in list Deps output · 6f0b1aa0
      Russ Cox authored 
      Fixes #21522.

Change-Id: Ifec1681b265576c47a4d736f6f124cc25485c593
Reviewed-on: https://go-review.googlesource.com/57011
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarIan Lance Taylor <iant@golang.org>
      6f0b1aa0
    • Alex Brainman's avatar
      misc/cgo/testcshared: cd into work directory before running android command · e2cdec77
      Alex Brainman authored 
      Hopefully this will fix android build.

Maybe fixes #21513

Change-Id: I98f760562646f06b56e385c36927e79458465b92
Reviewed-on: https://go-review.googlesource.com/56790Reviewed-by: 's avatarIan Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      e2cdec77
    • Joe Tsai's avatar
      archive/tar: refactor Reader support for sparse files · 3bece2fa
      Joe Tsai authored 
      This CL is the first step (of two) for adding sparse file support
to the Writer. This CL only refactors the logic of sparse-file handling
in the Reader so that common logic can be easily shared by the Writer.

As a result of this CL, there are some new publicly visible API changes:
	type SparseEntry struct { Offset, Length int64 }
	type Header struct { ...; SparseHoles []SparseEntry }

A new type is defined to represent a sparse fragment and a new field
Header.SparseHoles is added to represent the sparse holes in a file.
The API intentionally represent sparse files using hole fragments,
rather than data fragments so that the zero value of SparseHoles
naturally represents a normal file (i.e., a file without any holes).
The Reader now populates SparseHoles for sparse files.

It is necessary to export the sparse hole information, otherwise it would
be impossible for the Writer to specify that it is trying to encode
a sparse file, and what it looks like.

Some unexported helper functions were added to common.go:
	func validateSparseEntries(sp []SparseEntry, size int64) bool
	func alignSparseEntries(src []SparseEntry, size int64) []SparseEntry
	func invertSparseEntries(src []SparseEntry, size int64) []SparseEntry

The validation logic that used to be in newSparseFileReader is now moved
to validateSparseEntries so that the Writer can use it in the future.
alignSparseEntries is currently unused by the Reader, but will be used
by the Writer in the future. Since TAR represents sparse files by
only recording the data fragments, we add the invertSparseEntries
function to convert a list of data fragments to a normalized list
of hole fragments (and vice-versa).

Some other high-level changes:
* skipUnread is deleted, where most of it's logic is moved to the
Discard methods on regFileReader and sparseFileReader.
* readGNUSparsePAXHeaders was rewritten to be simpler.
* regFileReader and sparseFileReader were completely rewritten
in simpler and easier to understand logic.
* A bug was fixed in sparseFileReader.Read where it failed to
report an error if the logical size of the file ends before
consuming all of the underlying data.
* The tests for sparse-file support was completely rewritten.

Updates #13548

Change-Id: Ic1233ae5daf3b3f4278fe1115d34a90c4aeaf0c2
Reviewed-on: https://go-review.googlesource.com/56771
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: 's avatarIan Lance Taylor <iant@golang.org>
      3bece2fa
  9. 18 Aug, 2017 11 commits