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cmd/compile: only support -race and -msan where they work

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Consolidate decision about whether -race and -msan options are
supported in cmd/internal/sys. Use consolidated functions in
cmd/compile and cmd/go. Use a copy of them in cmd/dist; cmd/dist can't
import cmd/internal/sys because Go 1.4 doesn't have it.

Fixes #24315

Change-Id: I9cecaed4895eb1a2a49379b4848db40de66d32a9
Reviewed-on: https://go-review.googlesource.com/121816
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Ian Lance Taylor 2018-06-29 21:14:47 -07:00
parent d58f3e6fea
commit 7e64377903
10 changed files with 89 additions and 24 deletions
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8
src/cmd/compile/internal/gc/main.go
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@ -216,14 +216,18 @@ func Main(archInit func(*Arch)) {
flag.StringVar(&linkobj, "linkobj", "", "write linker-specific object to `file`")
objabi.Flagcount("live", "debug liveness analysis", &debuglive)
objabi.Flagcount("m", "print optimization decisions", &Debug['m'])
flag.BoolVar(&flag_msan, "msan", false, "build code compatible with C/C++ memory sanitizer")
if sys.MSanSupported(objabi.GOOS, objabi.GOARCH) {
flag.BoolVar(&flag_msan, "msan", false, "build code compatible with C/C++ memory sanitizer")
}
flag.BoolVar(&dolinkobj, "dolinkobj", true, "generate linker-specific objects; if false, some invalid code may compile")
flag.BoolVar(&nolocalimports, "nolocalimports", false, "reject local (relative) imports")
flag.StringVar(&outfile, "o", "", "write output to `file`")
flag.StringVar(&myimportpath, "p", "", "set expected package import `path`")
flag.BoolVar(&writearchive, "pack", false, "write to file.a instead of file.o")
objabi.Flagcount("r", "debug generated wrappers", &Debug['r'])
flag.BoolVar(&flag_race, "race", false, "enable race detector")
if sys.RaceDetectorSupported(objabi.GOOS, objabi.GOARCH) {
flag.BoolVar(&flag_race, "race", false, "enable race detector")
}
objabi.Flagcount("s", "warn about composite literals that can be simplified", &Debug['s'])
flag.StringVar(&pathPrefix, "trimpath", "", "remove `prefix` from recorded source file paths")
flag.BoolVar(&safemode, "u", false, "reject unsafe code")