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Unified Diff: test/mjsunit/compiler/truncating-store-deopt.js

Issue 997983004: [turbofan] Support lazy deopt for truncating store to a typed array. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Tweaks Created 5 years, 9 months ago
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Index: test/mjsunit/compiler/truncating-store-deopt.js
diff --git a/test/mjsunit/compiler/truncating-store-deopt.js b/test/mjsunit/compiler/truncating-store-deopt.js
new file mode 100644
index 0000000000000000000000000000000000000000..a640caf58347d1341e4aa0f2d26d8c9aa373be0a
--- /dev/null
+++ b/test/mjsunit/compiler/truncating-store-deopt.js
@@ -0,0 +1,28 @@
+// Copyright 2015 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
+
+function g(a, b, c) {
+ return a + b + c;
+}
+
+var asm = (function Module(global, env, buffer) {
+ "use asm";
+
+ var i32 = new global.Int32Array(buffer);
+
+ // This is not valid asm.js, but we should still generate correct code.
+ function store(x) {
+ return g(1, i32[0] = x, 2);
+ }
+
+ return { store: store };
+})({
+ "Int32Array": Int32Array
+}, {}, new ArrayBuffer(64 * 1024));
+
+var o = { toString : function() { %DeoptimizeFunction(asm.store); return "1"; } }
+
+asm.store(o);
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