src/hotspot/share/c1/c1_LIRAssembler.cpp

@@ -444,14 +444,12 @@
 
 
 void LIR_Assembler::emit_call(LIR_OpJavaCall* op) {
   verify_oop_map(op->info());
 
-  if (os::is_MP()) {
-    // must align calls sites, otherwise they can't be updated atomically on MP hardware
+  // must align calls sites, otherwise they can't be updated atomically
     align_call(op->code());
-  }
 
   // emit the static call stub stuff out of line
   emit_static_call_stub();
   CHECK_BAILOUT();