diff --git a/src/cmd/asm/internal/arch/s390x.go b/src/cmd/asm/internal/arch/s390x.go
index 0a4d278899..519d20877c 100644
--- a/src/cmd/asm/internal/arch/s390x.go
+++ b/src/cmd/asm/internal/arch/s390x.go
@@ -9,7 +9,6 @@
 package arch
 
 import (
-	"cmd/internal/obj"
 	"cmd/internal/obj/s390x"
 )
 
@@ -59,26 +58,6 @@ func jumpS390x(word string) bool {
 	return false
 }
 
-// IsS390xCMP reports whether the op (as defined by an s390x.A* constant) is
-// one of the CMP instructions that require special handling.
-func IsS390xCMP(op obj.As) bool {
-	switch op {
-	case s390x.ACMP, s390x.ACMPU, s390x.ACMPW, s390x.ACMPWU:
-		return true
-	}
-	return false
-}
-
-// IsS390xNEG reports whether the op (as defined by an s390x.A* constant) is
-// one of the NEG-like instructions that require special handling.
-func IsS390xNEG(op obj.As) bool {
-	switch op {
-	case s390x.ANEG, s390x.ANEGW:
-		return true
-	}
-	return false
-}
-
 func s390xRegisterNumber(name string, n int16) (int16, bool) {
 	switch name {
 	case "AR":