diff --git a/src/cmd/compile/internal/gc/walk.go b/src/cmd/compile/internal/gc/walk.go
index f2d27f2..c6aeddb 100644
--- a/src/cmd/compile/internal/gc/walk.go
+++ b/src/cmd/compile/internal/gc/walk.go
@@ -1105,6 +1105,39 @@
 			}
 		}
 
+		if Thearch.LinkArch.Family == sys.I386 {
+			if n.Left.Type.IsFloat() {
+				if n.Type.Etype == TINT64 {
+					n = mkcall("float64toint64", n.Type, init, conv(n.Left, Types[TFLOAT64]))
+					break
+				}
+
+				if n.Type.Etype == TUINT64 {
+					n = mkcall("float64touint64", n.Type, init, conv(n.Left, Types[TFLOAT64]))
+					break
+				}
+				if n.Type.Etype == TUINT32 || n.Type.Etype == TUINTPTR {
+					n = mkcall("float64touint32", n.Type, init, conv(n.Left, Types[TFLOAT64]))
+					break
+				}
+			}
+			if n.Type.IsFloat() {
+				if n.Left.Type.Etype == TINT64 {
+					n = conv(mkcall("int64tofloat64", Types[TFLOAT64], init, conv(n.Left, Types[TINT64])), n.Type)
+					break
+				}
+
+				if n.Left.Type.Etype == TUINT64 {
+					n = conv(mkcall("uint64tofloat64", Types[TFLOAT64], init, conv(n.Left, Types[TUINT64])), n.Type)
+					break
+				}
+				if n.Left.Type.Etype == TUINT32 || n.Left.Type.Etype == TUINTPTR {
+					n = conv(mkcall("uint32tofloat64", Types[TFLOAT64], init, conv(n.Left, Types[TUINT32])), n.Type)
+					break
+				}
+			}
+		}
+
 		n.Left = walkexpr(n.Left, init)
 
 	case OANDNOT: