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

test/cctest/compiler/test-run-jsexceptions.cc

 // Copyright 2014 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.
 
 #include "src/v8.h"
 
 #include "test/cctest/compiler/function-tester.h"
 
 using namespace v8::internal;
 using namespace v8::internal::compiler;
@@ skipping 164 matching lines @@
       "    r += 'D-';"
       "  }"
       "  return r;"
       "})";
   FunctionTester T(src);
 
   T.CheckCall(T.Val("-A-"), T.true_value(), T.false_value());
   T.CheckCall(T.Val("-A-B-D-"), T.false_value(), T.true_value());
   T.CheckCall(T.Val("-A-B-C-D-"), T.false_value(), T.false_value());
 }
+
+
+TEST(DeoptTry) {
+  i::FLAG_turbo_exceptions = true;
+  i::FLAG_turbo_deoptimization = true;
+  const char* src =
+      "(function f(a) {"
+      "  try {"
+      "    %DeoptimizeFunction(f);"
+      "    throw a;"
+      "  } catch (e) {"
+      "    return e + 1;"
+      "  }"
+      "})";
+  FunctionTester T(src);
+
+#if 0  // TODO(mstarzinger): Enable once we can.
+  T.CheckCall(T.Val(2), T.Val(1));
+#endif
+}
+
+
+TEST(DeoptCatch) {
+  i::FLAG_turbo_exceptions = true;
+  i::FLAG_turbo_deoptimization = true;
+  const char* src =
+      "(function f(a) {"
+      "  try {"
+      "    throw a;"
+      "  } catch (e) {"
+      "    %DeoptimizeFunction(f);"
+      "    return e + 1;"
+      "  }"
+      "})";
+  FunctionTester T(src);
+
+  T.CheckCall(T.Val(2), T.Val(1));
+}
+
+
+TEST(DeoptFinallyReturn) {
+  i::FLAG_turbo_exceptions = true;
+  i::FLAG_turbo_deoptimization = true;
+  const char* src =
+      "(function f(a) {"
+      "  try {"
+      "    throw a;"
+      "  } finally {"
+      "    %DeoptimizeFunction(f);"
+      "    return a + 1;"
+      "  }"
+      "})";
+  FunctionTester T(src);
+
+  T.CheckCall(T.Val(2), T.Val(1));
+}
+
+
+TEST(DeoptFinallyReThrow) {
+  i::FLAG_turbo_exceptions = true;
+  i::FLAG_turbo_deoptimization = true;
+  const char* src =
+      "(function f(a) {"
+      "  try {"
+      "    throw a;"
+      "  } finally {"
+      "    %DeoptimizeFunction(f);"
+      "  }"
+      "})";
+  FunctionTester T(src);
+
+#if 0  // TODO(mstarzinger): Enable once we can.
+  T.CheckThrows(T.NewObject("new Error"), T.Val(1));
+#endif
+}