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      1 // Copyright 2015 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Flags: --allow-natives-syntax
      6 
      7 function DeoptFromTry(x) {
      8   try {
      9     %DeoptimizeFunction(DeoptFromTry);
     10     throw x;
     11   } catch (e) {
     12     return e + 1;
     13   }
     14   return x + 2;
     15 }
     16 %OptimizeFunctionOnNextCall(DeoptFromTry);
     17 assertEquals(24, DeoptFromTry(23));
     18 
     19 
     20 function DeoptFromCatch(x) {
     21   try {
     22     throw x;
     23   } catch (e) {
     24     %DeoptimizeFunction(DeoptFromCatch);
     25     return e + 1;
     26   }
     27   return x + 2;
     28 }
     29 %OptimizeFunctionOnNextCall(DeoptFromCatch);
     30 assertEquals(24, DeoptFromCatch(23));
     31 
     32 
     33 function DeoptFromFinally_Return(x) {
     34   try {
     35     throw x;
     36   } finally {
     37     %DeoptimizeFunction(DeoptFromFinally_Return);
     38     return x + 1;
     39   }
     40   return x + 2;
     41 }
     42 %OptimizeFunctionOnNextCall(DeoptFromFinally_Return);
     43 assertEquals(24, DeoptFromFinally_Return(23));
     44 
     45 
     46 function DeoptFromFinally_ReThrow(x) {
     47   try {
     48     throw x;
     49   } finally {
     50     %DeoptimizeFunction(DeoptFromFinally_ReThrow);
     51   }
     52   return x + 2;
     53 }
     54 %OptimizeFunctionOnNextCall(DeoptFromFinally_ReThrow);
     55 assertThrows("DeoptFromFinally_ReThrow(new Error)", Error);
     56