cmd/go: add -O2 to invocation of gccgo
When using the go tool with gccgo, this changes the default compilation to use -O2. The -gccgoflags option can be used to override this default. I think this change better corresponds to what people expect when using the go tool. Reviewed-on: https://go-review.googlesource.com/c/164378 From-SVN: r269299
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@ -1,4 +1,4 @@
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66ac9466852d11e968f8fd2ad6ffc7386cee49e1
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d5e4595784fb744f5fa0e0f90e77de9b5448b793
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The first line of this file holds the git revision number of the last
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merge done from the gofrontend repository.
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@ -76,7 +76,7 @@ func (tools gccgoToolchain) gc(b *Builder, a *Action, archive string, importcfg
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gcargs = append(gcargs, "-fgo-relative-import-path="+p.Internal.LocalPrefix)
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}
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args := str.StringList(tools.compiler(), "-c", gcargs, "-o", ofile, forcedGccgoflags)
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args := str.StringList(tools.compiler(), "-c", "-O2", gcargs, "-o", ofile, forcedGccgoflags)
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if importcfg != nil {
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if b.gccSupportsFlag(args[:1], "-fgo-importcfg=/dev/null") {
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if err := b.writeFile(objdir+"importcfg", importcfg); err != nil {
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