cmd/compile: small cleanup to syslook calls
Passing copy==1 to syslook is only necessary to support subsequent calls to substArgTypes. typ2Itab and concatstring* don't have "any" parameters, so no point in deep copying their function signatures at every call site. For a couple other syslook calls (makemap and conv[IET]2[IET]), move them closer to their corresponding substArgTypes calls so it's easier to see that all syslook(fn, 1) calls are necessary. Change-Id: I4a0588ab2b8b5b8ce7a0a44b24c8cf8fda489af6 Reviewed-on: https://go-review.googlesource.com/20215 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Ian Lance Taylor <iant@golang.org>
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