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// Copyright 2018 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: --allow-natives-syntax --opt --no-always-opt
// Check that there are no deopt loops for DataView methods.
var buffer = new ArrayBuffer(64);
var dataview = new DataView(buffer, 8, 24);
// Check DataView getters.
function readUint8(offset) {
return dataview.getUint8(offset);
}
function warmupRead(f) {
f(0);
f(1);
%OptimizeFunctionOnNextCall(f);
f(2);
f(3);
}
warmupRead(readUint8);
assertOptimized(readUint8);
readUint8(0.5); // Deopts.
assertUnoptimized(readUint8);
warmupRead(readUint8);
assertOptimized(readUint8);
readUint8(1.5); // Doesn't deopt because getUint8 didn't get inlined this time.
assertOptimized(readUint8);
// Check DataView setters.
function writeUint8(offset, value) {
dataview.setUint8(offset, value);
}
function warmupWrite(f) {
f(0, 0);
f(0, 1);
%OptimizeFunctionOnNextCall(f);
f(0, 2);
f(0, 3);
}
warmupWrite(writeUint8);
assertOptimized(writeUint8);
writeUint8(0.5, 0); // Deopts.
assertUnoptimized(writeUint8);
warmupWrite(writeUint8);
assertOptimized(writeUint8);
writeUint8(1.5, 0); // Doesn't deopt.
assertOptimized(writeUint8);
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