8036091: compiler/membars/DekkerTest.java fails with -XX:CICompilerCount=1
Start test with -XX:-TieredCompilation so that one compiler thread works
Reviewed-by: kvn, twisti
diff --git a/hotspot/src/share/vm/runtime/arguments.cpp b/hotspot/src/share/vm/runtime/arguments.cpp
index 1e02bf0..d6d8583 100644
--- a/hotspot/src/share/vm/runtime/arguments.cpp
+++ b/hotspot/src/share/vm/runtime/arguments.cpp
@@ -2409,7 +2409,7 @@
status &= verify_interval(NmethodSweepActivity, 0, 2000, "NmethodSweepActivity");
// TieredCompilation needs at least 2 compiler threads.
- const int num_min_compiler_threads = (TieredCompilation) ? 2 : 1;
+ const int num_min_compiler_threads = (TieredCompilation && (TieredStopAtLevel >= CompLevel_full_optimization)) ? 2 : 1;
status &=verify_min_value(CICompilerCount, num_min_compiler_threads, "CICompilerCount");
return status;
diff --git a/hotspot/test/compiler/membars/DekkerTest.java b/hotspot/test/compiler/membars/DekkerTest.java
index ed31357..f4f2826 100644
--- a/hotspot/test/compiler/membars/DekkerTest.java
+++ b/hotspot/test/compiler/membars/DekkerTest.java
@@ -25,9 +25,9 @@
* @test
* @bug 8007898
* @summary Incorrect optimization of Memory Barriers in Matcher::post_store_load_barrier().
- * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CICompilerCount=1 -XX:+StressGCM -XX:+StressLCM DekkerTest
- * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CICompilerCount=1 -XX:+StressGCM -XX:+StressLCM DekkerTest
- * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CICompilerCount=1 -XX:+StressGCM -XX:+StressLCM DekkerTest
+ * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CICompilerCount=1 -XX:-TieredCompilation -XX:+StressGCM -XX:+StressLCM DekkerTest
+ * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CICompilerCount=1 -XX:-TieredCompilation -XX:+StressGCM -XX:+StressLCM DekkerTest
+ * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CICompilerCount=1 -XX:-TieredCompilation -XX:+StressGCM -XX:+StressLCM DekkerTest
* @author Martin Doerr martin DOT doerr AT sap DOT com
*
* Run 3 times since the failure is intermittent.
