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deps/v8/test/mjsunit/turboshaft/maglev-frontend/raw-abs.js

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+// Copyright 2024 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 --turbolev --turbofan
+
+function f64_abs(n) {
+  let v = n + 3.125;
+  return Math.abs(v);
+}
+
+%PrepareFunctionForOptimization(f64_abs);
+assertEquals(20.625, f64_abs(17.5));
+assertEquals(3.375, f64_abs(-6.5));
+%OptimizeFunctionOnNextCall(f64_abs);
+assertEquals(20.625, f64_abs(17.5));
+assertEquals(3.375, f64_abs(-6.5));
+assertOptimized(f64_abs);
+
+
+function i32_abs(n) {
+  let v = n * 10 - 28;
+  return Math.abs(v);
+}
+
+%PrepareFunctionForOptimization(i32_abs);
+assertEquals(8, i32_abs(2));
+assertEquals(22, i32_abs(5));
+%OptimizeFunctionOnNextCall(i32_abs);
+assertEquals(8, i32_abs(2));
+assertEquals(22, i32_abs(5));
+assertOptimized(i32_abs);
+
+// Triggering a deopt in `i32_abs` by calling it with a value that will lead
+// doing Int32Abs on min_int, which overflows because the result is not
+// representable as an int32.
+let min_int = -0x80000000;
+let val_for_deopt = ((min_int + 28) / 10) & 0xffffffff;
+assertTrue(%IsSmi(val_for_deopt));
+assertEquals(-min_int, i32_abs(val_for_deopt));