v8/test/debugger/debug/compiler/debug-catch-prediction.js

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Reland of [interpreter] Correctly thread through catch prediction. (patchset #1 id:1 of https://codereview.chromium.org/1695613002/ ) Reason for revert: No fix needed, original CL was perfectly fine! Original issue's description: > Revert of [interpreter] Correctly thread through catch prediction. (patchset #1 id:1 of https://codereview.chromium.org/1690973002/ ) > > Reason for revert: > Depends on the reverted https://codereview.chromium.org/1691723002 > > Original issue's description: > > [interpreter] Correctly thread through catch prediction. > > > > This change correctly sets the {CatchPrediction} field in exception > > handler tables for bytecode and optimized code. It also adds tests > > independent of promise handling for this prediction, to ensure all our > > backends are in sync on their prediction. > > > > R=rmcilroy@chromium.org,yangguo@chromium.org > > TEST=mjsunit/compiler/debug-catch-prediction > > BUG=v8:4674 > > LOG=n > > > > Committed: https://crrev.com/ba55f5594cb0b4a1a1e9b35d87fe54afe2d93f3b > > Cr-Commit-Position: refs/heads/master@{#33906} > > TBR=rmcilroy@chromium.org,yangguo@chromium.org,mstarzinger@chromium.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=v8:4674 > > Committed: https://crrev.com/c5229b311968fd638a6cd537c341b1055eb7be97 > Cr-Commit-Position: refs/heads/master@{#33922} TBR=rmcilroy@chromium.org,yangguo@chromium.org,adamk@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:4674 Review URL: https://codereview.chromium.org/1689113004 Cr-Commit-Position: refs/heads/master@{#33933}
2016-02-12 09:51:53 +00:00
// 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.
// 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);
})();