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Diffstat (limited to 'deps/v8/test/mjsunit/compiler/deopt-array-prototype-lastindexof.js')
-rw-r--r-- | deps/v8/test/mjsunit/compiler/deopt-array-prototype-lastindexof.js | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/compiler/deopt-array-prototype-lastindexof.js b/deps/v8/test/mjsunit/compiler/deopt-array-prototype-lastindexof.js new file mode 100644 index 00000000000..d47926cd3d8 --- /dev/null +++ b/deps/v8/test/mjsunit/compiler/deopt-array-prototype-lastindexof.js @@ -0,0 +1,26 @@ +// 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 + +/* Test deopt behaviors when the prototype has elements */ + +// lastIndexOf + +(function () { + var array = [,]; + + function lastIndexOf(val) { + return array.lastIndexOf(val); + } + + lastIndexOf(6); lastIndexOf(6); + + %OptimizeFunctionOnNextCall(lastIndexOf); + assertEquals(lastIndexOf(6), -1); + + array.__proto__.push(6); + // deopt + assertEquals(lastIndexOf(6), 0); +})(); |