Upload Kmake

deps/v8/test/mjsunit/turboshaft/maglev-frontend/switch.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 f_switch(x) {
+  switch(x) {
+    // Need at least v8_flags.switch_table_min_cases (= 6) cases so that the
+    // bytecode optimizes this switch with a jumptable rather than generating
+    // cascading ifs/elses.
+    case 3: return 3;
+    case 4: return 5;
+    case 5: return 7;
+    case 6: return 11;
+    // hole between 6 and 9
+    case 9: return 13;
+    // hole between 9 and 13
+    case 13: return 17;
+    default: return 19;
+  }
+}
+
+%PrepareFunctionForOptimization(f_switch);
+assertEquals(3, f_switch(3));
+assertEquals(5, f_switch(4));
+assertEquals(7, f_switch(5));
+assertEquals(11, f_switch(6));
+assertEquals(13, f_switch(9));
+assertEquals(17, f_switch(13));
+// Testing holes/default case
+assertEquals(19, f_switch(0));
+assertEquals(19, f_switch(2));
+assertEquals(19, f_switch(7));
+assertEquals(19, f_switch(8));
+assertEquals(19, f_switch(10));
+assertEquals(19, f_switch(12));
+assertEquals(19, f_switch(42));
+
+%OptimizeFunctionOnNextCall(f_switch);
+assertEquals(3, f_switch(3));
+assertOptimized(f_switch);
+assertEquals(5, f_switch(4));
+assertEquals(7, f_switch(5));
+assertEquals(11, f_switch(6));
+assertEquals(13, f_switch(9));
+assertEquals(17, f_switch(13));
+assertOptimized(f_switch);
+// Testing holes/default case
+assertEquals(19, f_switch(0));
+assertEquals(19, f_switch(2));
+assertEquals(19, f_switch(7));
+assertEquals(19, f_switch(8));
+assertEquals(19, f_switch(10));
+assertEquals(19, f_switch(12));
+assertEquals(19, f_switch(42));
+assertOptimized(f_switch);