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Unified Diff: test/mjsunit/compiler/debug-catch-prediction.js

Issue 1690973002: [interpreter] Correctly thread through catch prediction. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 10 months ago
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Index: test/mjsunit/compiler/debug-catch-prediction.js
diff --git a/test/mjsunit/compiler/debug-catch-prediction.js b/test/mjsunit/compiler/debug-catch-prediction.js
new file mode 100644
index 0000000000000000000000000000000000000000..34d3afd77ecb93cd2e191c01b29a20518bb3adc8
--- /dev/null
+++ b/test/mjsunit/compiler/debug-catch-prediction.js
@@ -0,0 +1,143 @@
+// Copyright 2016 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.
+
+// Flags: --expose-debug-as debug --allow-natives-syntax
+
+// Test debug event catch prediction for thrown exceptions. We distinguish
+// between "caught" and "uncaught" based on the following assumptions:
+// 1) try-catch : Will always catch the exception.
+// 2) try-finally : Will always re-throw the exception.
+
+Debug = debug.Debug;
+
+var log = [];
+
+function listener(event, exec_state, event_data, data) {
+ try {
+ if (event == Debug.DebugEvent.Exception) {
+ log.push([event_data.exception(), event_data.uncaught()]);
+ }
+ } catch (e) {
+ %AbortJS(e + "\n" + e.stack);
+ }
+}
+
+Debug.setBreakOnException();
+Debug.setListener(listener);
+
+(function TryCatch() {
+ log = []; // Clear log.
+ function f(a) {
+ try {
+ throw "boom" + a;
+ } catch(e) {
+ return e;
+ }
+ }
+ assertEquals("boom1", f(1));
+ assertEquals("boom2", f(2));
+ %OptimizeFunctionOnNextCall(f);
+ assertEquals("boom3", f(3));
+ print("Collect log:", log);
+ assertEquals([["boom1",false], ["boom2",false], ["boom3",false]], log);
+})();
+
+(function TryFinally() {
+ log = []; // Clear log.
+ function f(a) {
+ try {
+ throw "baem" + a;
+ } finally {
+ return a + 10;
+ }
+ }
+ assertEquals(11, f(1));
+ assertEquals(12, f(2));
+ %OptimizeFunctionOnNextCall(f);
+ assertEquals(13, f(3));
+ print("Collect log:", log);
+ assertEquals([["baem1",true], ["baem2",true], ["baem3",true]], log);
+})();
+
+(function TryCatchFinally() {
+ log = []; // Clear log.
+ function f(a) {
+ try {
+ throw "wosh" + a;
+ } catch(e) {
+ return e + a;
+ } finally {
+ // Nothing.
+ }
+ }
+ assertEquals("wosh11", f(1));
+ assertEquals("wosh22", f(2));
+ %OptimizeFunctionOnNextCall(f);
+ assertEquals("wosh33", f(3));
+ print("Collect log:", log);
+ assertEquals([["wosh1",false], ["wosh2",false], ["wosh3",false]], log);
+})();
+
+(function TryCatchNestedFinally() {
+ log = []; // Clear log.
+ function f(a) {
+ try {
+ try {
+ throw "bang" + a;
+ } finally {
+ // Nothing.
+ }
+ } catch(e) {
+ return e + a;
+ }
+ }
+ assertEquals("bang11", f(1));
+ assertEquals("bang22", f(2));
+ %OptimizeFunctionOnNextCall(f);
+ assertEquals("bang33", f(3));
+ print("Collect log:", log);
+ assertEquals([["bang1",false], ["bang2",false], ["bang3",false]], log);
+})();
+
+(function TryFinallyNestedCatch() {
+ log = []; // Clear log.
+ function f(a) {
+ try {
+ try {
+ throw "peng" + a;
+ } catch(e) {
+ return e
+ }
+ } finally {
+ return a + 10;
+ }
+ }
+ assertEquals(11, f(1));
+ assertEquals(12, f(2));
+ %OptimizeFunctionOnNextCall(f);
+ assertEquals(13, f(3));
+ print("Collect log:", log);
+ assertEquals([["peng1",false], ["peng2",false], ["peng3",false]], log);
+})();
+
+(function TryFinallyNestedFinally() {
+ log = []; // Clear log.
+ function f(a) {
+ try {
+ try {
+ throw "oops" + a;
+ } finally {
+ // Nothing.
+ }
+ } finally {
+ return a + 10;
+ }
+ }
+ assertEquals(11, f(1));
+ assertEquals(12, f(2));
+ %OptimizeFunctionOnNextCall(f);
+ assertEquals(13, f(3));
+ print("Collect log:", log);
+ assertEquals([["oops1",true], ["oops2",true], ["oops3",true]], log);
+})();
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