8342958: Use jvmArgs consistently in microbenchmarks

8343345: Use -jvmArgsPrepend when running microbenchmarks in RunTests.gmk

Reviewed-by: phh
Backport-of: 90bd544512de541cd98889bec58f419bc69a723d

Author: SendaoYan

make/RunTests.gmk

@@ -602,7 +602,7 @@ define SetupRunMicroTestBody
     $1_JMH_JVM_ARGS += $$(MICRO_VM_OPTIONS) $$(MICRO_JAVA_OPTIONS)
   endif
 
-  $1_MICRO_VM_OPTIONS := -jvmArgs $(call ShellQuote,$$($1_JMH_JVM_ARGS))
+  $1_MICRO_VM_OPTIONS := -jvmArgsPrepend $(call ShellQuote,$$($1_JMH_JVM_ARGS))
 
   ifneq ($$(MICRO_ITER), )
     $1_MICRO_ITER := -i $$(MICRO_ITER)

test/micro/org/openjdk/bench/java/lang/ObjectHashCode.java

@@ -50,37 +50,37 @@ public int mode_default() {
     // Experimental hashCode generation schemes. See synchronizer.cpp get_next_hash
     /*
     @Benchmark
-    @Fork(jvmArgsPrepend = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=0"})
+    @Fork(jvmArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=0"})
     public int mode_0() {
         return System.identityHashCode(new Object());
     }
 
     @Benchmark
-    @Fork(jvmArgsPrepend = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=1"})
+    @Fork(jvmArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=1"})
     public int mode_1() {
         return System.identityHashCode(new Object());
     }
 
     @Benchmark
-    @Fork(jvmArgsPrepend = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=2"})
+    @Fork(jvmArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=2"})
     public int mode_2() {
         return System.identityHashCode(new Object());
     }
 
     @Benchmark
-    @Fork(jvmArgsPrepend = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=3"})
+    @Fork(jvmArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=3"})
     public int mode_3() {
         return System.identityHashCode(new Object());
     }
 
     @Benchmark
-    @Fork(jvmArgsPrepend = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=4"})
+    @Fork(jvmArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=4"})
     public int mode_4() {
         return System.identityHashCode(new Object());
     }
 
     @Benchmark
-    @Fork(jvmArgsPrepend = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=5"})
+    @Fork(jvmArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:hashCode=5"})
     public int mode_5() {
         return System.identityHashCode(new Object());
     }