1 files changed, 13 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/ir/expr.go b/src/cmd/compile/internal/ir/expr.go
index 919cb3362f..4ff75e616d 100644
--- a/src/cmd/compile/internal/ir/expr.go
+++ b/src/cmd/compile/internal/ir/expr.go
@@ -345,7 +345,7 @@ func (n *StructKeyExpr) Sym() *types.Sym { return n.Field.Sym }
 type InlinedCallExpr struct {
 	miniExpr
 	Body       Nodes
-	ReturnVars Nodes
+	ReturnVars Nodes // must be side-effect free
 }
 
 func NewInlinedCallExpr(pos src.XPos, body, retvars []Node) *InlinedCallExpr {
@@ -357,6 +357,13 @@ func NewInlinedCallExpr(pos src.XPos, body, retvars []Node) *InlinedCallExpr {
 	return n
 }
 
+func (n *InlinedCallExpr) SingleResult() Node {
+	if have := len(n.ReturnVars); have != 1 {
+		base.FatalfAt(n.Pos(), "inlined call has %v results, expected 1", have)
+	}
+	return n.ReturnVars[0]
+}
+
 // A LogicalExpr is a expression X Op Y where Op is && or ||.
 // It is separate from BinaryExpr to make room for statements
 // that must be executed before Y but after X.
@@ -800,6 +807,11 @@ func StaticValue(n Node) Node {
 			continue
 		}
 
+		if n.Op() == OINLCALL {
+			n = n.(*InlinedCallExpr).SingleResult()
+			continue
+		}
+
 		n1 := staticValue1(n)
 		if n1 == nil {
 			return n