8302831: PPC: compiler/codecache/TestStressCodeBuffers.java fails aft…

…er JDK-8301819

Reviewed-by: mdoerr

src/hotspot/cpu/ppc/ppc.ad

@@ -1,6 +1,6 @@
 //
 // Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
-// Copyright (c) 2012, 2022 SAP SE. All rights reserved.
+// Copyright (c) 2012, 2023 SAP SE. All rights reserved.
 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 //
 // This code is free software; you can redistribute it and/or modify it
@@ -3412,6 +3412,7 @@ encode %{
     if (!_method) {
       // A call to a runtime wrapper, e.g. new, new_typeArray_Java, uncommon_trap.
       emit_call_with_trampoline_stub(_masm, entry_point, relocInfo::runtime_call_type);
+      if (ciEnv::current()->failing()) { return; } // Code cache may be full.
     } else {
       // Remember the offset not the address.
       const int start_offset = __ offset();
@@ -3582,6 +3583,7 @@ encode %{
       // to determine who we intended to call.
       __ relocate(virtual_call_Relocation::spec(virtual_call_meta_addr));
       emit_call_with_trampoline_stub(_masm, (address)$meth$$method, relocInfo::none);
+      if (ciEnv::current()->failing()) { return; } // Code cache may be full.
       assert(((MachCallDynamicJavaNode*)this)->ret_addr_offset() == __ offset() - start_offset,
              "Fix constant in ret_addr_offset(), expected %d", __ offset() - start_offset);
     } else {