$ cat test.go

package main

func main() {
	println("hi!")
}

$ go version
go version go1.15.6 linux/amd64

$ GOOS=linux GOARCH=wasm go build test.go
cmd/go: unsupported GOOS/GOARCH pair linux/wasm

$ GOOS=linux GOARCH=wasm go tool compile test.go
cmd/go: unsupported GOOS/GOARCH pair linux/wasm


$ gotip version
go version devel +854a2f8e01 Wed Dec 9 03:06:41 2020 +0000 linux/amd64

$ GOOS=linux GOARCH=wasm gotip build test.go
cmd/go: unsupported GOOS/GOARCH pair linux/wasm
$ GOOS=linux GOARCH=wasm gotip tool compile test.go
$ # no error, an object file is written to disk

$ file test.o
test.o: current ar archive

$ strings test.o | head -n3
!<arch>
__.PKGDEF       0           0     0     644     132       `
go object linux wasm devel +854a2f8e01 Wed Dec 9 03:06:41 2020 +0000 X:none

$ GOOS=windows GOARCH=arm64 go tool compile test.go
cmd/go: unsupported GOOS/GOARCH pair windows/arm64

$ GOOS=windows GOARCH=arm64 gotip tool compile test.go
$ strings test.o | head -n3
!<arch>
__.PKGDEF       0           0     0     644     135       `
go object windows arm64 devel +854a2f8e01 Wed Dec 9 03:06:41 2020 +0000 X:none