49 lines
1.2 KiB
JavaScript
49 lines
1.2 KiB
JavaScript
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// Copyright 2022 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --maglev
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function gen_shrl_smi(y) {
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return function shrl_smi(x) { return x >>> y; };
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}
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function shrl_test(lhs, rhs, expected_result) {
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const shrl = gen_shrl_smi(rhs);
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// Warmup.
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%PrepareFunctionForOptimization(shrl);
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%ClearFunctionFeedback(shrl);
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shrl(1);
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%OptimizeMaglevOnNextCall(shrl);
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assertEquals(expected_result, shrl(lhs));
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assertTrue(isMaglevved(shrl));
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%DeoptimizeFunction(shrl);
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assertEquals(expected_result, shrl(lhs));
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}
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function shrl_test_expect_deopt(lhs, rhs, expected_result) {
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const shrl = gen_shrl_smi(rhs);
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// Warmup.
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%PrepareFunctionForOptimization(shrl);
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%ClearFunctionFeedback(shrl);
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shrl(1);
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%OptimizeMaglevOnNextCall(shrl);
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assertEquals(expected_result, shrl(lhs));
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assertFalse(isMaglevved(shrl));
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}
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shrl_test(8, 2, 2);
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shrl_test_expect_deopt(-1, 1, 2147483647);
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shrl_test(-8, 2, 1073741822);
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shrl_test_expect_deopt(-8, 0, 4294967288);
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shrl_test_expect_deopt(-892396978, 0, 3402570318);
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shrl_test(8, 10, 0);
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shrl_test(8, 33, 4);
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shrl_test_expect_deopt(0xFFFFFFFF, 0x3FFFFFFF, 1);
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