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cmd/compile: add -lang flag to specify language version

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The default language version is the current one.

For testing purposes, added a check that type aliases require version
go1.9. There is no consistent support for changes made before 1.12.

Updates #28221

Change-Id: Ia1ef63fff911d5fd29ef79d5fa4e20cfd945feb7
Reviewed-on: https://go-review.googlesource.com/c/144340
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Ian Lance Taylor 2018-10-24 15:49:32 -07:00
parent d1836e629f
commit 2e9f0817f0
5 changed files with 137 additions and 2 deletions
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3
src/cmd/compile/doc.go
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@ -64,6 +64,9 @@ Flags:
instead of $GOROOT/pkg/$GOOS_$GOARCH.
-l
Disable inlining.
-lang version
Set language version to compile, as in -lang=go1.12.
Default is current version.
-largemodel
Generate code that assumes a large memory model.
-linkobj file