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cmd/compile: add Type.SetNumElem

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This removes all access to Type.Bound
from outside type.go.

Update sinit to make a new type rather than
copy and mutate.

Update bimport to create a new slice type
instead of mutating TDDDFIELD.
These are rare, so the extra allocs are nominal.

I’m not happy about having a setter,
but it appears the most practical route
forward at the moment, and it only has a few uses.

Passes toolstash -cmp.

Change-Id: I174f07c8f336afc656904bde4bdbde4f3ef0db96
Reviewed-on: https://go-review.googlesource.com/21423
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2016-03-31 15:18:39 -07:00
parent e504055e78
commit 5dd129bcff
4 changed files with 18 additions and 14 deletions
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8
src/cmd/compile/internal/gc/sinit.go
View file

@ -688,12 +688,8 @@ func arraylit(ctxt int, pass int, n *Node, var_ *Node, init *Nodes) {
}
func slicelit(ctxt int, n *Node, var_ *Node, init *Nodes) {
// make an array type
t := n.Type.Copy()
t.Bound = n.Right.Int()
t.Width = 0
t.Sym = nil
t.Haspointers = 0
// make an array type corresponding the number of elements we have
t := typArray(n.Type.Elem(), n.Right.Int())
dowidth(t)
if ctxt != 0 {