[turbofan] Add test coverage for deopt within try-catch.

test/mjsunit/compiler/try-deopt.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(mstarzinger): Add FLAG_turbo_exceptions once we want ClusterFuzz.
+// Flags: --allow-natives-syntax --turbo-deoptimization
+
+function DeoptFromTry(x) {
+  try {
+    %DeoptimizeFunction(DeoptFromTry);
+    throw x;
+  } catch (e) {
+    return e + 1;
+  }
+  return x + 2;
+}
+%OptimizeFunctionOnNextCall(DeoptFromTry);
+assertEquals(24, DeoptFromTry(23));
+
+
+function DeoptFromCatch(x) {
+  try {
+    throw x;
+  } catch (e) {
+    %DeoptimizeFunction(DeoptFromCatch);
+    return e + 1;
+  }
+  return x + 2;
+}
+%OptimizeFunctionOnNextCall(DeoptFromCatch);
+assertEquals(24, DeoptFromCatch(23));
+
+
+function DeoptFromFinally_Return(x) {
+  try {
+    throw x;
+  } finally {
+    %DeoptimizeFunction(DeoptFromFinally_Return);
+    return x + 1;
+  }
+  return x + 2;
+}
+%OptimizeFunctionOnNextCall(DeoptFromFinally_Return);
+assertEquals(24, DeoptFromFinally_Return(23));
+
+
+function DeoptFromFinally_ReThrow(x) {
+  try {
+    throw x;
+  } finally {
+    %DeoptimizeFunction(DeoptFromFinally_ReThrow);
+  }
+  return x + 2;
+}
+%OptimizeFunctionOnNextCall(DeoptFromFinally_ReThrow);
+assertThrows("DeoptFromFinally_ReThrow(new Error)", Error);