diff --git a/src/cmd/compile/internal/ssa/gen/386Ops.go b/src/cmd/compile/internal/ssa/gen/386Ops.go
index 3512d60..a6da7a5 100644
--- a/src/cmd/compile/internal/ssa/gen/386Ops.go
+++ b/src/cmd/compile/internal/ssa/gen/386Ops.go
@@ -298,7 +298,7 @@
 		// unary ops
 		{name: "NEGL", argLength: 1, reg: gp11, asm: "NEGL", resultInArg0: true, clobberFlags: true}, // -arg0
 
-		{name: "NOTL", argLength: 1, reg: gp11, asm: "NOTL", resultInArg0: true, clobberFlags: true}, // ^arg0
+		{name: "NOTL", argLength: 1, reg: gp11, asm: "NOTL", resultInArg0: true}, // ^arg0
 
 		{name: "BSFL", argLength: 1, reg: gp11, asm: "BSFL", clobberFlags: true}, // arg0 # of low-order zeroes ; undef if zero
 		{name: "BSFW", argLength: 1, reg: gp11, asm: "BSFW", clobberFlags: true}, // arg0 # of low-order zeroes ; undef if zero
diff --git a/src/cmd/compile/internal/ssa/gen/AMD64Ops.go b/src/cmd/compile/internal/ssa/gen/AMD64Ops.go
index 1887772..731454c 100644
--- a/src/cmd/compile/internal/ssa/gen/AMD64Ops.go
+++ b/src/cmd/compile/internal/ssa/gen/AMD64Ops.go
@@ -513,8 +513,8 @@
 		{name: "NEGQ", argLength: 1, reg: gp11, asm: "NEGQ", resultInArg0: true, clobberFlags: true}, // -arg0
 		{name: "NEGL", argLength: 1, reg: gp11, asm: "NEGL", resultInArg0: true, clobberFlags: true}, // -arg0
 
-		{name: "NOTQ", argLength: 1, reg: gp11, asm: "NOTQ", resultInArg0: true, clobberFlags: true}, // ^arg0
-		{name: "NOTL", argLength: 1, reg: gp11, asm: "NOTL", resultInArg0: true, clobberFlags: true}, // ^arg0
+		{name: "NOTQ", argLength: 1, reg: gp11, asm: "NOTQ", resultInArg0: true}, // ^arg0
+		{name: "NOTL", argLength: 1, reg: gp11, asm: "NOTL", resultInArg0: true}, // ^arg0
 
 		// BS{F,R}Q returns a tuple [result, flags]
 		// result is undefined if the input is zero.
diff --git a/src/cmd/compile/internal/ssa/opGen.go b/src/cmd/compile/internal/ssa/opGen.go
index 09006c8..640e517 100644
--- a/src/cmd/compile/internal/ssa/opGen.go
+++ b/src/cmd/compile/internal/ssa/opGen.go
@@ -4733,7 +4733,6 @@
 		name:         "NOTL",
 		argLen:       1,
 		resultInArg0: true,
-		clobberFlags: true,
 		asm:          x86.ANOTL,
 		reg: regInfo{
 			inputs: []inputInfo{
@@ -10777,7 +10776,6 @@
 		name:         "NOTQ",
 		argLen:       1,
 		resultInArg0: true,
-		clobberFlags: true,
 		asm:          x86.ANOTQ,
 		reg: regInfo{
 			inputs: []inputInfo{
@@ -10792,7 +10790,6 @@
 		name:         "NOTL",
 		argLen:       1,
 		resultInArg0: true,
-		clobberFlags: true,
 		asm:          x86.ANOTL,
 		reg: regInfo{
 			inputs: []inputInfo{