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[dev.regabi] cmd/compile: remove Func.ClosureType

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The closure's type always matches the corresponding function's type,
so just use one instance rather than carrying around two. Simplifies
construction of closures, rewriting them during walk, and shrinks
memory usage.

Passes toolstash -cmp.

Change-Id: I83b8b8f435b02ab25a30fb7aa15d5ec7ad97189d
Reviewed-on: https://go-review.googlesource.com/c/go/+/283152
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Matthew Dempsky 2021-01-12 12:25:33 -08:00
parent 41352fd401
commit d9acf6f3a3
5 changed files with 8 additions and 12 deletions
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2
src/cmd/compile/internal/ir/func.go
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@ -71,8 +71,6 @@ type Func struct {
// Anonymous and blank PPARAMOUTs are declared as ~rNN and ~bNN Names, respectively.
Dcl []*Name
ClosureType Ntype // closure representation type
// ClosureVars lists the free variables that are used within a
// function literal, but formally declared in an enclosing
// function. The variables in this slice are the closure function's