1 files changed, 51 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/baseline/test-osr.js b/deps/v8/test/mjsunit/baseline/test-osr.js
new file mode 100644
index 0000000000..8add12ddb2
--- /dev/null
+++ b/deps/v8/test/mjsunit/baseline/test-osr.js
@@ -0,0 +1,51 @@
+// Copyright 2021 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 --sparkplug --no-always-sparkplug --use-osr
+// Flags: --opt --no-always-opt --deopt-every-n-times=0
+
+function isExecutingBaseline(func) {
+  let opt_status = %GetOptimizationStatus(func);
+  return (opt_status & V8OptimizationStatus.kTopmostFrameIsBaseline) !== 0;
+}
+
+function f() {
+  for (var i = 0; i <= 20; i++) {
+    if (i == 5) {
+      %BaselineOsr();
+    }
+    if (i > 5) {
+      assertTrue(isBaseline(f));
+      assertTrue(isExecutingBaseline(f));
+    }
+  }
+}
+
+%NeverOptimizeFunction(f);
+f();
+
+var expectedStatus = V8OptimizationStatus.kTopmostFrameIsInterpreted;
+
+function checkTopmostFrame(func) {
+  let opt_status = %GetOptimizationStatus(func);
+  assertTrue ((opt_status & expectedStatus) !== 0, "Expected flag " +
+      expectedStatus + " to be set in optimization status");
+}
+
+function g() {
+  for (var i = 0; i <= 20; i++) {
+    checkTopmostFrame(g)
+    if (i == 2) {
+      %BaselineOsr();
+      expectedStatus = V8OptimizationStatus.kTopmostFrameIsBaseline;
+    }
+    if (i == 5) {
+      %OptimizeOsr();
+      expectedStatus = V8OptimizationStatus.kTopmostFrameIsTurboFanned;
+    }
+  }
+}
+
+%PrepareFunctionForOptimization(g);
+g();