17a74ddd3d
PR-URL: https://github.com/nodejs/node/pull/49639 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
80 lines
2.2 KiB
JavaScript
80 lines
2.2 KiB
JavaScript
// Copyright 2022 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 --maglev
|
|
|
|
function negate(val) {
|
|
return -val;
|
|
}
|
|
|
|
function test_negate_int32(value, expected) {
|
|
// Warmup.
|
|
%PrepareFunctionForOptimization(negate);
|
|
%ClearFunctionFeedback(negate);
|
|
negate(1, -1);
|
|
%OptimizeMaglevOnNextCall(negate);
|
|
assertEquals(expected, negate(value));
|
|
assertTrue(isMaglevved(negate));
|
|
|
|
%DeoptimizeFunction(negate);
|
|
assertEquals(expected, negate(value));
|
|
}
|
|
|
|
test_negate_int32(1, -1);
|
|
test_negate_int32(-1, 1);
|
|
test_negate_int32(42, -42);
|
|
test_negate_int32(-42, 42);
|
|
|
|
function test_negate_float(value, expected) {
|
|
// Warmup.
|
|
%PrepareFunctionForOptimization(negate);
|
|
%ClearFunctionFeedback(negate);
|
|
negate(1.1, -1.1);
|
|
%OptimizeMaglevOnNextCall(negate);
|
|
assertEquals(expected, negate(value));
|
|
assertTrue(isMaglevved(negate));
|
|
|
|
%DeoptimizeFunction(negate);
|
|
assertEquals(expected, negate(value));
|
|
}
|
|
|
|
test_negate_float(1.23, -1.23);
|
|
test_negate_float(-1.001, 1.001);
|
|
test_negate_float(42.42, -42.42);
|
|
test_negate_float(-42.42, 42.42);
|
|
|
|
const int32_max = Math.pow(2,30)-1;
|
|
const int32_min = -Math.pow(2,31);
|
|
test_negate_float(int32_max, -int32_max);
|
|
test_negate_float(int32_min, -int32_min);
|
|
|
|
function test_negate_int32_expect_deopt(value, expected) {
|
|
// Warmup.
|
|
%PrepareFunctionForOptimization(negate);
|
|
%ClearFunctionFeedback(negate);
|
|
negate(12, -12);
|
|
%OptimizeMaglevOnNextCall(negate);
|
|
assertEquals(expected, negate(value));
|
|
assertFalse(isMaglevved(negate));
|
|
}
|
|
|
|
// -0 is not an int32
|
|
test_negate_int32_expect_deopt(0, -0);
|
|
test_negate_int32_expect_deopt(-0, 0);
|
|
|
|
// -int32_min doesn't fit inside an int32
|
|
assertTrue(-int32_min > int32_max)
|
|
test_negate_int32_expect_deopt(int32_min, -int32_min);
|
|
test_negate_int32_expect_deopt(-int32_min, int32_min);
|
|
|
|
// -int32_max does fit inside an int32, but might not fit inside a Smi
|
|
assertTrue(-int32_max >= int32_min)
|
|
if (%IsSmi(-int32_max)) {
|
|
test_negate_int32(int32_max, -int32_max);
|
|
test_negate_int32(-int32_max, int32_max);
|
|
} else {
|
|
test_negate_int32_expect_deopt(int32_max, -int32_max);
|
|
test_negate_int32_expect_deopt(-int32_max, int32_max);
|
|
}
|