diff --git a/src/cmd/compile/internal/ssa/gen/ARMOps.go b/src/cmd/compile/internal/ssa/gen/ARMOps.go
index 253ff573ec..d1f86039a3 100644
--- a/src/cmd/compile/internal/ssa/gen/ARMOps.go
+++ b/src/cmd/compile/internal/ssa/gen/ARMOps.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build ignore
 // +build ignore
 
 package main
@@ -156,7 +157,7 @@ func init() {
 			reg: regInfo{
 				inputs:   []regMask{buildReg("R1"), buildReg("R0")},
 				outputs:  []regMask{buildReg("R0"), buildReg("R1")},
-				clobbers: buildReg("R2 R3 R14"),
+				clobbers: buildReg("R2 R3 R12 R14"), // R14 is LR, R12 is linker trampoline scratch register
 			},
 			clobberFlags: true,
 			typ:          "(UInt32,UInt32)",
@@ -459,7 +460,7 @@ func init() {
 			argLength: 3,
 			reg: regInfo{
 				inputs:   []regMask{buildReg("R1"), buildReg("R0")},
-				clobbers: buildReg("R1 R14"),
+				clobbers: buildReg("R1 R12 R14"), // R14 is LR, R12 is linker trampoline scratch register
 			},
 			faultOnNilArg0: true,
 		},
@@ -476,7 +477,7 @@ func init() {
 			argLength: 3,
 			reg: regInfo{
 				inputs:   []regMask{buildReg("R2"), buildReg("R1")},
-				clobbers: buildReg("R0 R1 R2 R14"),
+				clobbers: buildReg("R0 R1 R2 R12 R14"), // R14 is LR, R12 is linker trampoline scratch register
 			},
 			faultOnNilArg0: true,
 			faultOnNilArg1: true,
@@ -564,8 +565,8 @@ func init() {
 
 		// LoweredWB invokes runtime.gcWriteBarrier. arg0=destptr, arg1=srcptr, arg2=mem, aux=runtime.gcWriteBarrier
 		// It saves all GP registers if necessary,
-		// but clobbers R14 (LR) because it's a call.
-		{name: "LoweredWB", argLength: 3, reg: regInfo{inputs: []regMask{buildReg("R2"), buildReg("R3")}, clobbers: (callerSave &^ gpg) | buildReg("R14")}, clobberFlags: true, aux: "Sym", symEffect: "None"},
+		// but clobbers R14 (LR) because it's a call, and R12 which is linker trampoline scratch register.
+		{name: "LoweredWB", argLength: 3, reg: regInfo{inputs: []regMask{buildReg("R2"), buildReg("R3")}, clobbers: (callerSave &^ gpg) | buildReg("R12 R14")}, clobberFlags: true, aux: "Sym", symEffect: "None"},
 	}
 
 	blocks := []blockData{
diff --git a/src/cmd/compile/internal/ssa/opGen.go b/src/cmd/compile/internal/ssa/opGen.go
index 2f56625397..51cb0881b8 100644
--- a/src/cmd/compile/internal/ssa/opGen.go
+++ b/src/cmd/compile/internal/ssa/opGen.go
@@ -13879,7 +13879,7 @@ var opcodeTable = [...]opInfo{
 				{0, 2}, // R1
 				{1, 1}, // R0
 			},
-			clobbers: 16396, // R2 R3 R14
+			clobbers: 20492, // R2 R3 R12 R14
 			outputs: []outputInfo{
 				{0, 1}, // R0
 				{1, 2}, // R1
@@ -17228,7 +17228,7 @@ var opcodeTable = [...]opInfo{
 				{0, 2}, // R1
 				{1, 1}, // R0
 			},
-			clobbers: 16386, // R1 R14
+			clobbers: 20482, // R1 R12 R14
 		},
 	},
 	{
@@ -17242,7 +17242,7 @@ var opcodeTable = [...]opInfo{
 				{0, 4}, // R2
 				{1, 2}, // R1
 			},
-			clobbers: 16391, // R0 R1 R2 R14
+			clobbers: 20487, // R0 R1 R2 R12 R14
 		},
 	},
 	{
@@ -17403,7 +17403,7 @@ var opcodeTable = [...]opInfo{
 				{0, 4}, // R2
 				{1, 8}, // R3
 			},
-			clobbers: 4294918144, // R14 F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15
+			clobbers: 4294922240, // R12 R14 F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15
 		},
 	},
 
diff --git a/src/cmd/compile/internal/ssa/rewrite386.go b/src/cmd/compile/internal/ssa/rewrite386.go
index 93b258afac..1ec2d26f75 100644
--- a/src/cmd/compile/internal/ssa/rewrite386.go
+++ b/src/cmd/compile/internal/ssa/rewrite386.go
@@ -3,10 +3,8 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"math"
-)
+import "math"
+import "cmd/compile/internal/types"
 
 func rewriteValue386(v *Value) bool {
 	switch v.Op {
diff --git a/src/cmd/compile/internal/ssa/rewriteAMD64.go b/src/cmd/compile/internal/ssa/rewriteAMD64.go
index dd92b41c20..0b98b9ddf6 100644
--- a/src/cmd/compile/internal/ssa/rewriteAMD64.go
+++ b/src/cmd/compile/internal/ssa/rewriteAMD64.go
@@ -3,12 +3,10 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"cmd/internal/obj"
-	"internal/buildcfg"
-	"math"
-)
+import "internal/buildcfg"
+import "math"
+import "cmd/internal/obj"
+import "cmd/compile/internal/types"
 
 func rewriteValueAMD64(v *Value) bool {
 	switch v.Op {
diff --git a/src/cmd/compile/internal/ssa/rewriteARM.go b/src/cmd/compile/internal/ssa/rewriteARM.go
index 25db5b9fba..febb5566e3 100644
--- a/src/cmd/compile/internal/ssa/rewriteARM.go
+++ b/src/cmd/compile/internal/ssa/rewriteARM.go
@@ -3,10 +3,8 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"internal/buildcfg"
-)
+import "internal/buildcfg"
+import "cmd/compile/internal/types"
 
 func rewriteValueARM(v *Value) bool {
 	switch v.Op {
diff --git a/src/cmd/compile/internal/ssa/rewritePPC64.go b/src/cmd/compile/internal/ssa/rewritePPC64.go
index fe7620c218..96dee0bd21 100644
--- a/src/cmd/compile/internal/ssa/rewritePPC64.go
+++ b/src/cmd/compile/internal/ssa/rewritePPC64.go
@@ -3,11 +3,9 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"internal/buildcfg"
-	"math"
-)
+import "internal/buildcfg"
+import "math"
+import "cmd/compile/internal/types"
 
 func rewriteValuePPC64(v *Value) bool {
 	switch v.Op {
diff --git a/src/cmd/compile/internal/ssa/rewriteRISCV64.go b/src/cmd/compile/internal/ssa/rewriteRISCV64.go
index bc4b18e0cd..431fb1aaf6 100644
--- a/src/cmd/compile/internal/ssa/rewriteRISCV64.go
+++ b/src/cmd/compile/internal/ssa/rewriteRISCV64.go
@@ -3,10 +3,8 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"math"
-)
+import "math"
+import "cmd/compile/internal/types"
 
 func rewriteValueRISCV64(v *Value) bool {
 	switch v.Op {
diff --git a/src/cmd/compile/internal/ssa/rewriteS390X.go b/src/cmd/compile/internal/ssa/rewriteS390X.go
index 49c5898704..8b41d62c31 100644
--- a/src/cmd/compile/internal/ssa/rewriteS390X.go
+++ b/src/cmd/compile/internal/ssa/rewriteS390X.go
@@ -3,11 +3,9 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"cmd/internal/obj/s390x"
-	"math"
-)
+import "math"
+import "cmd/compile/internal/types"
+import "cmd/internal/obj/s390x"
 
 func rewriteValueS390X(v *Value) bool {
 	switch v.Op {
diff --git a/src/cmd/compile/internal/ssa/rewriteWasm.go b/src/cmd/compile/internal/ssa/rewriteWasm.go
index ed23ae032a..5dab09f85b 100644
--- a/src/cmd/compile/internal/ssa/rewriteWasm.go
+++ b/src/cmd/compile/internal/ssa/rewriteWasm.go
@@ -3,11 +3,9 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"internal/buildcfg"
-	"math"
-)
+import "internal/buildcfg"
+import "math"
+import "cmd/compile/internal/types"
 
 func rewriteValueWasm(v *Value) bool {
 	switch v.Op {
diff --git a/src/cmd/compile/internal/ssa/rewritegeneric.go b/src/cmd/compile/internal/ssa/rewritegeneric.go
index 0e5f49491e..52258201ca 100644
--- a/src/cmd/compile/internal/ssa/rewritegeneric.go
+++ b/src/cmd/compile/internal/ssa/rewritegeneric.go
@@ -3,10 +3,8 @@
 
 package ssa
 
-import (
-	"cmd/compile/internal/types"
-	"math"
-)
+import "math"
+import "cmd/compile/internal/types"
 
 func rewriteValuegeneric(v *Value) bool {
 	switch v.Op {