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cmd/compile: reduce allocs some more

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Also: update fmt_test.go.

Together with the previous commits, we are now at or below c85b77c
levels in terms of allocation for the benchmark described in #16897
(old = c85b77c, new = this commit):

name       old time/op     new time/op     delta
Template       297ms ± 5%      284ms ± 3%  -4.53%  (p=0.000 n=27+29)
Unicode        159ms ± 5%      151ms ± 5%  -4.91%  (p=0.000 n=28+30)
GoTypes        985ms ± 5%      935ms ± 2%  -5.13%  (p=0.000 n=28+29)

name       old alloc/op    new alloc/op    delta
Template      46.8MB ± 0%     45.7MB ± 0%  -2.37%  (p=0.000 n=30+30)
Unicode       37.8MB ± 0%     37.9MB ± 0%  +0.29%  (p=0.000 n=29+30)
GoTypes        143MB ± 0%      138MB ± 0%  -3.64%  (p=0.000 n=29+30)

name       old allocs/op   new allocs/op   delta
Template        444k ± 0%       440k ± 0%  -0.94%  (p=0.000 n=30+30)
Unicode         369k ± 0%       369k ± 0%  +0.19%  (p=0.000 n=29+30)
GoTypes        1.35M ± 0%      1.34M ± 0%  -1.24%  (p=0.000 n=30+30)

For #16897.

Change-Id: Iedbeb408e2f1e68dd4a3201bf8813c8066ebf7ed
Reviewed-on: https://go-review.googlesource.com/29089
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Robert Griesemer 2016-09-12 17:30:35 -07:00
parent b6946fb120
commit 0cd3ecb016
4 changed files with 16 additions and 17 deletions
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4
src/cmd/compile/fmt_test.go
View file

@ -552,19 +552,15 @@ var knownFormats = map[string]string{
"*cmd/compile/internal/gc.Node %j": "",
"*cmd/compile/internal/gc.Node %p": "",
"*cmd/compile/internal/gc.Node %v": "",
"*cmd/compile/internal/gc.Sym % v": "",
"*cmd/compile/internal/gc.Sym %+v": "",
"*cmd/compile/internal/gc.Sym %-v": "",
"*cmd/compile/internal/gc.Sym %0S": "",
"*cmd/compile/internal/gc.Sym %S": "",
"*cmd/compile/internal/gc.Sym %p": "",
"*cmd/compile/internal/gc.Sym %v": "",
"*cmd/compile/internal/gc.Type % -v": "",
"*cmd/compile/internal/gc.Type %#v": "",
"*cmd/compile/internal/gc.Type %+v": "",
"*cmd/compile/internal/gc.Type %- v": "",
"*cmd/compile/internal/gc.Type %-S": "",
"*cmd/compile/internal/gc.Type %-v": "",
"*cmd/compile/internal/gc.Type %0S": "",
"*cmd/compile/internal/gc.Type %L": "",
"*cmd/compile/internal/gc.Type %S": "",