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// 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.
// Flags: --turbo-filter=g
// Test that Debug::PrepareForBreakPoints can deal with turbofan code (g)
// on the stack. Without deoptimization support, we will not be able to
// replace optimized code for g by unoptimized code with debug break slots.
// This would cause stepping to fail (V8 issue 3660).
function f(x) {
g(x);
var a = 0; // Break 6
return a; // Break 7
} // Break 8
function g(x) {
if (x) h();
var a = 0; // Break 2
var b = 1; // Break 3
return a + b; // Break 4
} // Break 5
function h() {
debugger; // Break 0
} // Break 1
Debug = debug.Debug;
var exception = null;
var break_count = 0;
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
exec_state.prepareStep(Debug.StepAction.StepNext);
print(exec_state.frame(0).sourceLineText());
var match = exec_state.frame(0).sourceLineText().match(/Break (\d)/);
assertNotNull(match);
assertEquals(break_count++, parseInt(match[1]));
} catch (e) {
print(e + e.stack);
exception = e;
}
}
%PrepareFunctionForOptimization(g);
f(0);
f(0);
%OptimizeFunctionOnNextCall(g);
Debug.setListener(listener);
f(1);
Debug.setListener(null); // Break 9
assertNull(exception);
assertEquals(10, break_count);
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