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[dev.regabi] cmd/compile: remove gc ↔ ssa cycle hacks

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The cycle hacks existed because gc needed to import ssa
which need to know about gc.Node. But now that's ir.Node,
and there's no cycle anymore.

Don't know how much it matters but LocalSlot is now
one word shorter than before, because it holds a pointer
instead of an interface for the *Node. That won't last long.

Now that they're not necessary for interface satisfaction,
IsSynthetic and IsAutoTmp can move to top-level ir functions.

Change-Id: Ie511e93466cfa2b17d9a91afc4bd8d53fdb80453
Reviewed-on: https://go-review.googlesource.com/c/go/+/272931
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Russ Cox 2020-11-17 21:47:56 -05:00
parent 84e2bd611f
commit 048debb224
16 changed files with 73 additions and 126 deletions
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2
src/cmd/compile/internal/ir/sizeof_test.go
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@ -20,7 +20,7 @@ func TestSizeof(t *testing.T) {
_32bit uintptr // size on 32bit platforms
_64bit uintptr // size on 64bit platforms
}{
{Func{}, 132, 240},
{Func{}, 136, 248},
{Name{}, 32, 56},
{Param{}, 24, 48},
{Node{}, 76, 128},