cmd/compile: remove unnecessary code in keepAliveAt

TypeWord and SrcRType are only needed for interface expression
conversion. Since CL 725180, the kept alive nodes are passed directly to
runtime.KeepAlive, so there's no interface conversion anymore.

Change-Id: I37ad8016bf76a1bf8ba36efea043fc71341b33c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/737840
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>

diff --git a/src/cmd/compile/internal/bloop/bloop.go b/src/cmd/compile/internal/bloop/bloop.go
index f2111cf95272a8a1d41aa1048359cb1c3d3cc12a..f65454871e2b3a34de8ab40bf5cca3776f0f83a7 100644 (file)
--- a/src/cmd/compile/internal/bloop/bloop.go
+++ b/src/cmd/compile/internal/bloop/bloop.go
@@ -39,7 +39,6 @@ package bloop
 import (
        "cmd/compile/internal/base"
        "cmd/compile/internal/ir"
-       "cmd/compile/internal/reflectdata"
        "cmd/compile/internal/typecheck"
        "cmd/compile/internal/types"
        "cmd/internal/src"
@@ -117,11 +116,6 @@ func keepAliveAt(ns ir.Nodes, curNode ir.Node) ir.Node {
                        base.FatalfAt(n.Pos(), "keepAliveAt: node %v is not addressable", n)
                }
                arg := ir.NewConvExpr(pos, ir.OCONV, types.Types[types.TUNSAFEPTR], typecheck.NodAddr(n))
-               if !n.Type().IsInterface() {
-                       srcRType0 := reflectdata.TypePtrAt(pos, n.Type())
-                       arg.TypeWord = srcRType0
-                       arg.SrcRType = srcRType0
-               }
                callExpr := typecheck.Call(pos, typecheck.LookupRuntime("KeepAlive"), ir.Nodes{arg}, false).(*ir.CallExpr)
                callExpr.IsCompilerVarLive = true
                callExpr.NoInline = true