8239422: [TESTBUG] compiler/c1/TestPrintIRDuringConstruction.java fai…

…led when C1 is disabled

Skip test if C1 is not available.

Backport-of: eef0237

test/hotspot/jtreg/compiler/c1/TestPrintIRDuringConstruction.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2020, Oracle and/or its affiliates. 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
@@ -25,7 +25,7 @@
  * @test
  * @summary load/store elimination will print out instructions without bcis.
  * @bug 8235383
- * @requires vm.debug == true
+ * @requires vm.debug == true & vm.compiler1.enabled
  * @run main/othervm -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -Xcomp -XX:+PrintIRDuringConstruction -XX:+Verbose compiler.c1.TestPrintIRDuringConstruction
  */