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cmd/compile: can not compile large function #47866

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mattn opened this issue Aug 21, 2021 · 1 comment
Open

cmd/compile: can not compile large function #47866

mattn opened this issue Aug 21, 2021 · 1 comment
Labels
compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Milestone
Unplanned

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@mattn
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mattn commented Aug 21, 2021

What version of Go are you using (go version)?

$ go version
go version devel go1.18-e9e0d1ef70 Fri Aug 20 03:25:36 2021 +0000 windows/amd64

Does this issue reproduce with the latest release?

Yes.

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\mattn\AppData\Local\go-build
set GOENV=C:\Users\mattn\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMODCACHE=C:\Users\mattn\go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\mattn\go
set GOPRIVATE=
set GOPROXY=https://proxy.golang.org,direct
set GOROOT=C:\dev\go
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=C:\dev\go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=devel go1.18-e9e0d1ef70 Fri Aug 20 03:25:36 2021 +0000
set GCCGO=gccgo
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=C:\Users\mattn\go\src\github.com\mattn\go-iseven\go.mod
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\mattn\AppData\Local\Temp\go-build1034691121=/tmp/go-build -gno-record-gcc-switches

What did you do?

$ git clone https://github.com/mattn/go-iseven
$ cd go-iseven
$ go build

What did you expect to see?

Compilation successfully.

What did you see instead?

Compilation take too long times. I couldn't build this for few minutes. I'm using Windows 10. 16GB RAM.

This is a joke project that provide same function with https://github.com/samuelmarina/is-even. The code is generated from js code. The compilation require too many CPU usage and memory.
@ALTree ALTree changed the title Can not compile large function cmd/compile: can not compile large function Aug 21, 2021
@ALTree ALTree added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Aug 21, 2021
@ALTree
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ALTree commented Aug 21, 2021

Well, it's a function with a 100MB body... Not sure how much time it would be reasonable to wait for it to be compiled, but I'm not surprised it takes more than a few minutes.

@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Jul 13, 2022
@seankhliao seankhliao added this to the Unplanned milestone Aug 20, 2022
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Labels
compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Projects
Go Compiler / Runtime
Status: Triage Backlog
Milestone
Unplanned
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4 participants
@mattn @ALTree @gopherbot @seankhliao