8285980: Several tests in compiler/c2/irTests miss @requires vm.compiler2.enabled

Reviewed-by: thartmann

Author: DamonFool

test/hotspot/jtreg/compiler/c2/irTests/TestCountedLoopSafepoint.java

@@ -30,6 +30,7 @@
  * bug 8281322
  * @summary check counted loop is properly constructed with/without safepoint
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestCountedLoopSafepoint
  */
 

test/hotspot/jtreg/compiler/c2/irTests/TestDuplicateBackedge.java

@@ -31,6 +31,7 @@
  * @bug 8279888
  * @summary Local variable independently used by multiple loops can interfere with loop optimizations
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestDuplicateBackedge
  */
 

test/hotspot/jtreg/compiler/c2/irTests/TestFewIterationsCountedLoop.java

@@ -30,6 +30,7 @@
  * @bug 8262721
  * @summary Add Tests to verify single iteration loops are properly optimized
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestFewIterationsCountedLoop
  */
 

test/hotspot/jtreg/compiler/c2/irTests/TestIRAddIdealNotXPlusC.java

@@ -32,6 +32,7 @@
  * @summary Test that transformation from ~x + c to (c - 1) - x and
  *          from ~(x + c) to (-c - 1) - x works as intended.
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestIRAddIdealNotXPlusC
  */
 public class TestIRAddIdealNotXPlusC {

test/hotspot/jtreg/compiler/c2/irTests/TestIRLShiftIdeal_XPlusX_LShiftC.java

@@ -31,6 +31,7 @@
  * @bug 8278114
  * @summary Test that transformation from (x + x) >> c to x >> (c + 1) works as intended.
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestIRLShiftIdeal_XPlusX_LShiftC
  */
 public class TestIRLShiftIdeal_XPlusX_LShiftC {

test/hotspot/jtreg/compiler/c2/irTests/TestLongRangeChecks.java

@@ -31,6 +31,7 @@
  * @bug 8259609 8276116
  * @summary C2: optimize long range checks in long counted loops
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestLongRangeChecks
  */
 

test/hotspot/jtreg/compiler/c2/irTests/TestSkeletonPredicates.java

@@ -32,6 +32,7 @@
  * @bug 8278228
  * @summary C2: Improve identical back-to-back if elimination
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestSkeletonPredicates
  */
 

test/hotspot/jtreg/compiler/c2/irTests/TestStripMiningDropsSafepoint.java

@@ -30,6 +30,7 @@
  * @bug 8282045
  * @summary When loop strip mining fails, safepoints are removed from loop anyway
  * @library /test/lib /
+ * @requires vm.compiler2.enabled
  * @run driver compiler.c2.irTests.TestStripMiningDropsSafepoint
  */
 

test/hotspot/jtreg/compiler/c2/irTests/TestSuperwordFailsUnrolling.java

@@ -32,6 +32,7 @@
  * @summary C2: loop candidate for superword not always unrolled fully if superword fails
  * @library /test/lib /
  * @build sun.hotspot.WhiteBox
+ * @requires vm.compiler2.enabled
  * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
  * @run main/othervm -Xbootclasspath/a:. -DSkipWhiteBoxInstall=true -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI compiler.c2.irTests.TestSuperwordFailsUnrolling
  */