Migrated several tests from blink to V8 repository.

test/webkit/dfg-dead-min-two-args.js

Index: test/webkit/dfg-dead-min-two-args.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-dead-min-two-args.js
similarity index 61%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-dead-min-two-args.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..f723f43b3a1fe8b3c2e8e3e0f7fd82821ce4dcf0 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-dead-min-two-args.js
@@ -22,10 +22,49 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"Tests that a dead use of Math.min(a,b) at least speculates that its arguments are indeed numbers."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo(a, b) {
+    Math.min(a.f, b.f);
+    return 100;
+}
 
+function bar(a, b) {
+    Math.min(a.f, b.f);
+    return 100;
+}
+
+var x = {f:42};
+var y = {f:43};
+var ok = null;
+var expected = 42;
+var empty = "";
+
+for (var i = 0; i < 200; ++i) {
+    if (i == 150) {
+        x = {f:{valueOf:function(){ ok = i; return 37; }}};
+        expected = 37;
+    }
+    var result = eval(empty + "foo(x, y)");
+    if (i >= 150)
+        shouldBe("ok", "" + i);
+    shouldBe("result", "100");
+}
+
+x = {f:42};
+y = {f:43};
+ok = null;
+expected = 42;
+
+for (var i = 0; i < 200; ++i) {
+    if (i == 150) {
+        y = {f:{valueOf:function(){ ok = i; return 37; }}};
+        expected = 37;
+    }
+    var result = eval(empty + "bar(x, y)");
+    if (i >= 150)
+        shouldBe("ok", "" + i);
+    shouldBe("result", "100");
+}