[turbofan] Initial support for escape analysis.

test/mjsunit/compiler/escape-analysis-1.js

Index: test/mjsunit/compiler/escape-analysis-1.js
diff --git a/test/mjsunit/regress/regress-3029.js b/test/mjsunit/compiler/escape-analysis-1.js
similarity index 85%
copy from test/mjsunit/regress/regress-3029.js
copy to test/mjsunit/compiler/escape-analysis-1.js
index ae412dff2ba98b52468cd2fa02d7bfc0653cffb9..5c721ace5293cf890387aa9d177eb1e940402c63 100644
--- a/test/mjsunit/regress/regress-3029.js
+++ b/test/mjsunit/compiler/escape-analysis-1.js
@@ -1,4 +1,4 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
+// Copyright 2015 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -25,21 +25,19 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax
-
-function c(x) {
-  undefined.boom();
-}
+// Flags: --allow-natives-syntax --turbo --turbo-escape

[Michael Starzinger, 2015/11/30 10:05:39]

We could drop the "--turbo" from this line, because one of our variants will
contain it and we get broader coverage by also being able to run it against the
default variant that is shipping at the moment.

[sigurds, 2015/11/30 13:50:24]

Done.

+//
 
-function f() {
-  return new c();
+function f(a) {
+  "use strict";
+  return arguments.length;
 }
 
 function g() {
-  f();
+  return f(1,2,3);
 }
 
-assertThrows("g()", TypeError);
-assertThrows("g()", TypeError);
+assertEquals(3, g());
+assertEquals(3, g());
 %OptimizeFunctionOnNextCall(g);
-assertThrows("g()", TypeError);
+assertEquals(3, g());