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a33903b02c
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Josh Bleecher Snyder a33903b02c cmd/compile: evaluate itabname during walk instead of SSA 
For backend concurrency safety. Follow-up to CL 38721.

This does introduce a Nodes where there wasn't one before,
but these are so rare that the performance impact is negligible.

Does not pass toolstash-check, but the only change is line numbers,
and the new line numbers appear preferable.

Updates #15756

name       old alloc/op    new alloc/op    delta
Template      39.9MB ± 0%     39.9MB ± 0%    ~     (p=0.841 n=5+5)
Unicode       29.8MB ± 0%     29.8MB ± 0%    ~     (p=0.690 n=5+5)
GoTypes        113MB ± 0%      113MB ± 0%  +0.09%  (p=0.008 n=5+5)
SSA            854MB ± 0%      855MB ± 0%    ~     (p=0.222 n=5+5)
Flate         25.3MB ± 0%     25.3MB ± 0%    ~     (p=0.690 n=5+5)
GoParser      31.8MB ± 0%     31.9MB ± 0%    ~     (p=0.421 n=5+5)
Reflect       78.2MB ± 0%     78.3MB ± 0%    ~     (p=0.548 n=5+5)
Tar           26.7MB ± 0%     26.7MB ± 0%    ~     (p=0.690 n=5+5)
XML           42.3MB ± 0%     42.3MB ± 0%    ~     (p=0.222 n=5+5)

name       old allocs/op   new allocs/op   delta
Template        391k ± 1%       391k ± 0%    ~     (p=0.841 n=5+5)
Unicode         320k ± 0%       320k ± 0%    ~     (p=0.841 n=5+5)
GoTypes        1.14M ± 0%      1.14M ± 0%  +0.26%  (p=0.008 n=5+5)
SSA            7.60M ± 0%      7.60M ± 0%    ~     (p=0.548 n=5+5)
Flate           234k ± 0%       234k ± 1%    ~     (p=1.000 n=5+5)
GoParser        316k ± 1%       317k ± 0%    ~     (p=0.841 n=5+5)
Reflect         979k ± 0%       980k ± 0%    ~     (p=0.690 n=5+5)
Tar             251k ± 1%       251k ± 0%    ~     (p=0.595 n=5+5)
XML             394k ± 0%       393k ± 0%    ~     (p=0.222 n=5+5)


Change-Id: I237ae5502db4560f78ce021dc62f6d289797afd6
Reviewed-on: https://go-review.googlesource.com/39197
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2017-04-01 00:08:31 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api math/big: define Word as uint instead of uintptr 2017-02-21 19:31:40 +00:00
doc spec: for non-constant map keys, add reference to evaluation order section 2017-03-24 18:51:10 +00:00
lib/time *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
misc cmd/link: make mach-o dwarf segment properly aligned 2017-03-30 12:29:18 +00:00
src cmd/compile: evaluate itabname during walk instead of SSA 2017-04-01 00:08:31 +00:00
test cmd/compile: avoid infinite loops in dead blocks during phi insertion 2017-03-30 17:06:08 +00:00
.gitattributes
.gitignore cmd/dist: move cmd/go z files to cmd/go/internal/cfg 2017-02-03 20:30:52 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS A+C: automated update 2016-12-21 03:22:22 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md readme: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
robots.txt

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

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Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

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To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html

Note that the Go project does not use GitHub pull requests, and that we use the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.