ARM: Ensure space for lazy deoptimization before calling IC.

test/mjsunit/regress/regress-247688.js

Index: test/mjsunit/regress/regress-247688.js
diff --git a/test/mjsunit/regress/regress-234101.js b/test/mjsunit/regress/regress-247688.js
similarity index 73%
copy from test/mjsunit/regress/regress-234101.js
copy to test/mjsunit/regress/regress-247688.js
index 74228dfabe532efdce2d2cd31736959eaff4349b..80e2884c705ef230e96a93ede8e5815175b01363 100644
--- a/test/mjsunit/regress/regress-234101.js
+++ b/test/mjsunit/regress/regress-247688.js
@@ -27,16 +27,54 @@
 
 // Flags: --allow-natives-syntax
 
-// Currently, the gap resolver doesn't handle moves from a ConstantOperand to a
-// DoubleRegister, but these kind of moves appeared when HConstant::EmitAtUses
-// was changed to allow special double values (-0, NaN, hole). So we should
-// either enhance the gap resolver or make sure that such moves don't happen.
+var a = {};
+a.x = 1
+a.y = 1.5
 
-function foo(x) {
- return (x ? NaN : 0.2) + 0.1;
+var b = {}
+b.x = 1.5;
+b.y = 1;
+
+var c = {}
+c.x = 1.5;
+
+var d = {}
+d.x = 1.5;
+
+var e = {}
+e.x = 1.5;
+
+var f = {}
+f.x = 1.5;
+
+var g = {}
+g.x = 1.5;
+
+var h = {}
+h.x = 1.5;
+
+var i = {}
+i.x = 1.5;
+
+var o = {}
+var p = {y : 10, z : 1}
+o.__proto__ = p;
+delete p.z
+
+function foo(v, w) {
+  // Make load via IC in optimized code. Its target will get overwritten by
+  // lazy deopt patch for the stack check.
+  v.y;
+  // Make store with transition to make this code dependent on the map.
+  w.y = 1;
+  return b.y;
 }
 
-foo(false);
-foo(false);
+foo(o, c);
+foo(o, d);
+foo(o, e);
 %OptimizeFunctionOnNextCall(foo);
-foo(false);
+foo(b, f);
+foo(b, g);
+foo(b, h);
+foo(a, i);