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cmd/compile: add Type.ChanDir

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Passes toolstash -cmp.

Change-Id: I3af35191e73a558080f777a4eed93bcec7dfe1f5
Reviewed-on: https://go-review.googlesource.com/21469
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2016-04-02 16:26:30 -07:00
parent 4ae4e81c2c
commit 29267c2131
7 changed files with 20 additions and 13 deletions
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4
src/cmd/compile/internal/gc/subr.go
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@ -721,7 +721,7 @@ func eqtype1(t1, t2 *Type, assumedEqual map[typePair]struct{}) bool {
}
case TCHAN:
if t1.Chan != t2.Chan {
if t1.ChanDir() != t2.ChanDir() {
return false
}
@ -844,7 +844,7 @@ func assignop(src *Type, dst *Type, why *string) Op {
// 4. src is a bidirectional channel value, dst is a channel type,
// src and dst have identical element types, and
// either src or dst is not a named type.
if src.IsChan() && src.Chan == Cboth && dst.IsChan() {
if src.IsChan() && src.ChanDir() == Cboth && dst.IsChan() {
if Eqtype(src.Elem(), dst.Elem()) && (src.Sym == nil || dst.Sym == nil) {
return OCONVNOP
}