Fix lost arguments dropping in HLeaveInlined.

test/mjsunit/regress/regress-crbug-150545.js

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-// Filler long enough to trigger lazy parsing.
-var filler = "//" + new Array(1024).join('x');
+// Test that we do not generate OSR entry points that have an arguments
+// stack height different from zero. The OSR machinery cannot generate
+// frames for that.
 
-// Test strict eval in global context.
-eval(
-  "'use strict';" +
-  "var x = 23;" +
-  "var f = function bozo1() {" +
-  "  return x;" +
-  "};" +
-  "assertSame(23, f());" +
-  filler
-);
-
-// Test default eval in strict context.
 (function() {
   "use strict";
-  eval(
-    "var y = 42;" +
-    "var g = function bozo2() {" +
-    "  return y;" +
-    "};" +
-    "assertSame(42, g());" +
-    filler
-  );
+
+  var instantReturn = false;
+  function inner() {
+    if (instantReturn) return;
+    assertSame(3, arguments.length);
+    assertSame(1, arguments[0]);
+    assertSame(2, arguments[1]);
+    assertSame(3, arguments[2]);
+  }
+
+  function outer(iterations) {
+    inner(1,2,3);
+    while (--iterations > 0);

[Jakob Kummerow, 2012/09/19 07:51:12]

why not this:

while (%GetOptimizationStatus(outer) == 2);

That would loop exactly until the function gets optimized, and you wouldn't need
the fixed iteration count.

[Michael Starzinger, 2012/09/19 08:12:26]

Done.

+    assertSame(0, iterations);
+  }
+
+  // This function should be optimized via OSR.
+  outer(100000);
 })();