cmd/compile: remove nil check in accessing PAUTOHEAP variable
CL 23393 introduces PAUTOHEAP, and access of PAUTOHEAP variable is
rewritten to indirection of a PAUTO variable. Mark this variable
non-nil, so this indirection does not introduce extra nil checks.
Change-Id: I31853eed5e60238b6c5bc0546e2e9ab340dcddd9
Reviewed-on: https://go-review.googlesource.com/26831
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
diff --git a/src/cmd/compile/internal/gc/walk.go b/src/cmd/compile/internal/gc/walk.go
index 1e7d80d..88ac347 100644
--- a/src/cmd/compile/internal/gc/walk.go
+++ b/src/cmd/compile/internal/gc/walk.go
@@ -506,7 +506,9 @@
if n.Op == ONAME && n.Class == PAUTOHEAP {
nn := Nod(OIND, n.Name.Heapaddr, nil)
nn = typecheck(nn, Erv)
- return walkexpr(nn, init)
+ nn = walkexpr(nn, init)
+ nn.Left.NonNil = true
+ return nn
}
opswitch:
