src/cmd/internal/obj/ppc64/asm9.go |  3 +++
 src/cmd/internal/obj/ppc64/obj9.go | 11 +++--------

diff --git a/src/cmd/internal/obj/ppc64/asm9.go b/src/cmd/internal/obj/ppc64/asm9.go
index 149604574b1c83d45784f47bf524cc69f72eddc9..0472375e48e7756bf2e5f1bae873c2becd4e3408 100644
--- a/src/cmd/internal/obj/ppc64/asm9.go
+++ b/src/cmd/internal/obj/ppc64/asm9.go
@@ -607,6 +607,9 @@ 	{obj.AUNDEF, C_NONE, C_NONE, C_NONE, C_NONE, 78, 4, 0},
 	{obj.APCDATA, C_LCON, C_NONE, C_NONE, C_LCON, 0, 0, 0},
 	{obj.AFUNCDATA, C_SCON, C_NONE, C_NONE, C_ADDR, 0, 0, 0},
 	{obj.ANOP, C_NONE, C_NONE, C_NONE, C_NONE, 0, 0, 0},
+	{obj.ANOP, C_LCON, C_NONE, C_NONE, C_NONE, 0, 0, 0}, // NOP operand variations added for #40689
+	{obj.ANOP, C_REG, C_NONE, C_NONE, C_NONE, 0, 0, 0},  // to preserve previous behavior
+	{obj.ANOP, C_FREG, C_NONE, C_NONE, C_NONE, 0, 0, 0},
 	{obj.ADUFFZERO, C_NONE, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as ABR/ABL
 	{obj.ADUFFCOPY, C_NONE, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as ABR/ABL
 	{obj.APCALIGN, C_LCON, C_NONE, C_NONE, C_NONE, 0, 0, 0},   // align code
diff --git a/src/cmd/internal/obj/ppc64/obj9.go b/src/cmd/internal/obj/ppc64/obj9.go
index 7135488f9d14170c8700d9bcfb6b5913fde7ff8d..a2f16f2e2a643557de2d08510a3d137972591035 100644
--- a/src/cmd/internal/obj/ppc64/obj9.go
+++ b/src/cmd/internal/obj/ppc64/obj9.go
@@ -427,7 +427,6 @@ 	c.cursym.Func.Locals = int32(textstksiz)
 
 	/*
 	 * find leaf subroutines
-	 * strip NOPs
 	 * expand RET
 	 * expand BECOME pseudo
 	 */
@@ -557,10 +556,7 @@ 			p.Mark |= BRANCH
 			q = p
 			q1 = p.Pcond
 			if q1 != nil {
-				for q1.As == obj.ANOP {
-					q1 = q1.Link
-					p.Pcond = q1
-				}
+				// NOPs are not removed due to #40689.
 
 				if q1.Mark&LEAF == 0 {
 					q1.Mark |= LABEL
@@ -587,9 +583,8 @@ 			}
 			continue
 
 		case obj.ANOP:
-			q1 = p.Link
-			q.Link = q1 /* q is non-nop */
-			q1.Mark |= p.Mark
+			// NOPs are not removed due to
+			// #40689
 			continue
 
 		default: