From 6fe8ee78e9b4870ebc1de2b5cfd6170a78a56c00 Mon Sep 17 00:00:00 2001
From: Robert Griesemer <gri@golang.org>
Date: Fri, 2 Nov 2018 22:21:23 -0700
Subject: [PATCH] cmd/compile/internal/gc: remove isforw predicate table
 (cleanup)
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Was only ever filled with one Etype (TFORW) and only used
in one place. Easier to just check for TFORW.

Change-Id: Icc96da3a22b0af1d7e60bc5841c744916c53341e
Reviewed-on: https://go-review.googlesource.com/c/147285
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
---
 src/cmd/compile/internal/gc/go.go       | 1 -
 src/cmd/compile/internal/gc/reflect.go  | 2 +-
 src/cmd/compile/internal/gc/universe.go | 2 --
 3 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/cmd/compile/internal/gc/go.go b/src/cmd/compile/internal/gc/go.go
index cfd695097f86b..471746ed7dde2 100644
--- a/src/cmd/compile/internal/gc/go.go
+++ b/src/cmd/compile/internal/gc/go.go
@@ -147,7 +147,6 @@ var asmhdr string
 var simtype [NTYPE]types.EType
 
 var (
-	isforw    [NTYPE]bool
 	isInt     [NTYPE]bool
 	isFloat   [NTYPE]bool
 	isComplex [NTYPE]bool
diff --git a/src/cmd/compile/internal/gc/reflect.go b/src/cmd/compile/internal/gc/reflect.go
index e4008bd7e7642..415d3cd5948b7 100644
--- a/src/cmd/compile/internal/gc/reflect.go
+++ b/src/cmd/compile/internal/gc/reflect.go
@@ -1137,7 +1137,7 @@ func dtypesym(t *types.Type) *obj.LSym {
 			return lsym
 		}
 		// TODO(mdempsky): Investigate whether this can happen.
-		if isforw[tbase.Etype] {
+		if tbase.Etype == TFORW {
 			return lsym
 		}
 	}
diff --git a/src/cmd/compile/internal/gc/universe.go b/src/cmd/compile/internal/gc/universe.go
index 96980ad500d57..760a8e40b0f5b 100644
--- a/src/cmd/compile/internal/gc/universe.go
+++ b/src/cmd/compile/internal/gc/universe.go
@@ -200,8 +200,6 @@ func typeinit() {
 	isComplex[TCOMPLEX64] = true
 	isComplex[TCOMPLEX128] = true
 
-	isforw[TFORW] = true
-
 	// initialize okfor
 	for et := types.EType(0); et < NTYPE; et++ {
 		if isInt[et] || et == TIDEAL {