diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go
index e70e5a969b..979a092ba1 100644
--- a/src/cmd/compile/internal/gc/ssa.go
+++ b/src/cmd/compile/internal/gc/ssa.go
@@ -3546,7 +3546,7 @@ func init() {
 			s.vars[&memVar] = s.newValue3(ssa.OpAtomicAnd32, types.TypeMem, args[0], args[1], s.mem())
 			return nil
 		},
-		sys.AMD64, sys.ARM64, sys.PPC64, sys.S390X) // TODO: same arches as And8.
+		sys.AMD64, sys.ARM64, sys.MIPS, sys.PPC64, sys.S390X)
 	addF("runtime/internal/atomic", "Or8",
 		func(s *state, n *Node, args []*ssa.Value) *ssa.Value {
 			s.vars[&memVar] = s.newValue3(ssa.OpAtomicOr8, types.TypeMem, args[0], args[1], s.mem())
@@ -3558,7 +3558,7 @@ func init() {
 			s.vars[&memVar] = s.newValue3(ssa.OpAtomicOr32, types.TypeMem, args[0], args[1], s.mem())
 			return nil
 		},
-		sys.AMD64, sys.ARM64, sys.PPC64, sys.S390X) // TODO: same arches as And8.
+		sys.AMD64, sys.ARM64, sys.MIPS, sys.PPC64, sys.S390X)
 
 	alias("runtime/internal/atomic", "Loadint64", "runtime/internal/atomic", "Load64", all...)
 	alias("runtime/internal/atomic", "Xaddint64", "runtime/internal/atomic", "Xadd64", all...)
diff --git a/src/cmd/compile/internal/ssa/gen/MIPS.rules b/src/cmd/compile/internal/ssa/gen/MIPS.rules
index 96feaf9234..246b4ebdbc 100644
--- a/src/cmd/compile/internal/ssa/gen/MIPS.rules
+++ b/src/cmd/compile/internal/ssa/gen/MIPS.rules
@@ -383,6 +383,9 @@
 				(ANDconst <typ.UInt32> [3]
 					(XORconst <typ.UInt32> [3] ptr)))))) mem)
 
+(AtomicAnd32 ...) => (LoweredAtomicAnd ...)
+(AtomicOr32  ...) => (LoweredAtomicOr  ...)
+
 
 // checks
 (NilCheck ...) => (LoweredNilCheck ...)
diff --git a/src/cmd/compile/internal/ssa/rewriteMIPS.go b/src/cmd/compile/internal/ssa/rewriteMIPS.go
index bdafa9a957..87d1aa378f 100644
--- a/src/cmd/compile/internal/ssa/rewriteMIPS.go
+++ b/src/cmd/compile/internal/ssa/rewriteMIPS.go
@@ -44,6 +44,9 @@ func rewriteValueMIPS(v *Value) bool {
 	case OpAtomicAdd32:
 		v.Op = OpMIPSLoweredAtomicAdd
 		return true
+	case OpAtomicAnd32:
+		v.Op = OpMIPSLoweredAtomicAnd
+		return true
 	case OpAtomicAnd8:
 		return rewriteValueMIPS_OpAtomicAnd8(v)
 	case OpAtomicCompareAndSwap32:
@@ -61,6 +64,9 @@ func rewriteValueMIPS(v *Value) bool {
 	case OpAtomicLoadPtr:
 		v.Op = OpMIPSLoweredAtomicLoad32
 		return true
+	case OpAtomicOr32:
+		v.Op = OpMIPSLoweredAtomicOr
+		return true
 	case OpAtomicOr8:
 		return rewriteValueMIPS_OpAtomicOr8(v)
 	case OpAtomicStore32: