--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/GraalCompilerTest.java	2019-03-09 03:56:04.992656481 +0100
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/GraalCompilerTest.java	2019-03-09 03:56:04.628653905 +0100
@@ -111,7 +111,7 @@
 import org.graalvm.compiler.phases.Phase;
 import org.graalvm.compiler.phases.PhaseSuite;
 import org.graalvm.compiler.phases.common.CanonicalizerPhase;
-import org.graalvm.compiler.phases.common.ConvertDeoptimizeToGuardPhase;
+import org.graalvm.compiler.loop.phases.ConvertDeoptimizeToGuardPhase;
 import org.graalvm.compiler.phases.common.inlining.InliningPhase;
 import org.graalvm.compiler.phases.common.inlining.info.InlineInfo;
 import org.graalvm.compiler.phases.common.inlining.policy.GreedyInliningPolicy;
@@ -899,11 +899,21 @@
         return actual;
     }
 
+    private static final List<Class<?>> C2_OMIT_STACK_TRACE_IN_FAST_THROW_EXCEPTIONS = Arrays.asList(
+                    ArithmeticException.class,
+                    ArrayIndexOutOfBoundsException.class,
+                    ArrayStoreException.class,
+                    ClassCastException.class,
+                    NullPointerException.class);
+
     protected void assertEquals(Result expect, Result actual) {
         if (expect.exception != null) {
             Assert.assertTrue("expected " + expect.exception, actual.exception != null);
             Assert.assertEquals("Exception class", expect.exception.getClass(), actual.exception.getClass());
-            Assert.assertEquals("Exception message", expect.exception.getMessage(), actual.exception.getMessage());
+            // C2 can optimize out the stack trace and message in some cases
+            if (expect.exception.getMessage() != null || !C2_OMIT_STACK_TRACE_IN_FAST_THROW_EXCEPTIONS.contains(expect.exception.getClass())) {
+                Assert.assertEquals("Exception message", expect.exception.getMessage(), actual.exception.getMessage());
+            }
         } else {
             if (actual.exception != null) {
                 throw new AssertionError("expected " + expect.returnValue + " but got an exception", actual.exception);