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cmd/compile: add types.RecalcSize

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This is the only case where Align is assigned outside of package
types. Rather than adding a SetAlign method, adding a RecalcSize
function is a bit more descriptive.

Change-Id: I1b3c01ebd0e41183665baa63c926592865bbbd0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/345479
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Matthew Dempsky 2021-08-26 15:54:44 -07:00
parent e7eee5e265
commit 62f88b6dc8
2 changed files with 9 additions and 2 deletions
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3
src/cmd/compile/internal/noder/func.go
View File

@ -37,8 +37,7 @@ func (g *irgen) funcBody(fn *ir.Func, recv *syntax.Field, sig *syntax.FuncType,
// calculated its size, including parameter offsets. Now that we've // calculated its size, including parameter offsets. Now that we've
// created the parameter Names, force a recalculation to ensure // created the parameter Names, force a recalculation to ensure
// their offsets are correct. // their offsets are correct.
typ.Align = 0 types.RecalcSize(typ)
types.CalcSize(typ)
if block != nil { if block != nil {
typecheck.DeclContext = ir.PAUTO typecheck.DeclContext = ir.PAUTO

8
src/cmd/compile/internal/types/size.go
View File

@ -562,6 +562,14 @@ func CalcStructSize(s *Type) {
s.Width = calcStructOffset(s, s, 0, 1) // sets align s.Width = calcStructOffset(s, s, 0, 1) // sets align
} }
// RecalcSize is like CalcSize, but recalculates t's size even if it
// has already been calculated before. It does not recalculate other
// types.
func RecalcSize(t *Type) {
t.Align = 0
CalcSize(t)
}
// when a type's width should be known, we call CheckSize // when a type's width should be known, we call CheckSize
// to compute it. during a declaration like // to compute it. during a declaration like
// //