Reland of r19102: Check elimination improvement: propagation of state through phis is supported, Che

test/mjsunit/compiler/compare-map-elim2.js

Index: test/mjsunit/compiler/compare-map-elim2.js
diff --git a/test/mjsunit/compiler/compare_objeq_elim.js b/test/mjsunit/compiler/compare-map-elim2.js
similarity index 52%
rename from test/mjsunit/compiler/compare_objeq_elim.js
rename to test/mjsunit/compiler/compare-map-elim2.js
index 4492df45c32a5a7c0dbc25f8bb28470ff8eafcf0..0c0540ccab3b80c334127c81fee4648b4856b66e 100644
--- a/test/mjsunit/compiler/compare_objeq_elim.js
+++ b/test/mjsunit/compiler/compare-map-elim2.js
@@ -27,59 +27,104 @@
 
 // Flags: --allow-natives-syntax --check-elimination
 
-function A(x, y) {
-  this.x = x;
-  this.y = y;
-}
 
-function B(x, y) {
-  this.x = x;
-  this.y = y;
-}
+function test_empty() {
+  function foo(o) {
+    return { value: o.value };
+  }
 
-function F1(a, b) {
-  if (a == b) return a.x;
-  else return b.x;
-}
+  function Base() {
+    this.v_ = 5;
+  }
+  Base.prototype.__defineGetter__("value", function() { return 1; });
 
-function F2(a, b) {
-  if (a == b) return a.x;
-  else return b.x;
-}
+  var a = new Base();
+  a.a = 1;
+  foo(a);
 
-function F3(a, b) {
-  var f = a.y;
-  if (a == b) return a.x;
-  else return b.x;
-}
+  Base.prototype.__defineGetter__("value", function() { return this.v_; });
+
+  var b = new Base();
+  b.b = 1;
+  foo(b);
 
-function F4(a, b) {
-  var f = b.y;
-  if (a == b) return a.x;
-  else return b.x;
+  var d = new Base();
+  d.d = 1;
+  d.value;
+
+  %OptimizeFunctionOnNextCall(foo);
+
+  var o = foo(b);
 }
 
-%NeverOptimizeFunction(test);
 
-function test(f, a, b) {
-  f(a, a);
-  f(a, b);
-  f(b, a);
-  f(b, c);
-  f(b, b);
-  f(c, c);
+function test_narrow1() {
+  function foo(o) {
+    return { value: o.value };
+  }
+
+  function Base() {
+    this.v_ = 5;
+  }
+  Base.prototype.__defineGetter__("value", function() { return 1; });
+
+  var a = new Base();
+  a.a = 1;
+  foo(a);
+
+  Base.prototype.__defineGetter__("value", function() { return this.v_; });
+
+  var b = new Base();
+  b.b = 1;
+  foo(b);
 
-  %OptimizeFunctionOnNextCall(f)
+  var c = new Base();
+  c.c = 1;
+  foo(c);
 
-  assertEquals(a.x, f(a, a));
-  assertEquals(b.x, f(b, b));
+  var d = new Base();
+  d.d = 1;
+  d.value;
+
+  %OptimizeFunctionOnNextCall(foo);
+
+  var o = foo(b);
 }
 
-var a = new A(3, 5);
-var b = new B(2, 6);
-var c = new A(1, 7);
 
-test(F1, a, c);
-test(F2, a, b);
-test(F3, a, b);
-test(F4, a, b);
+function test_narrow2() {
+  function foo(o, flag) {
+    return { value: o.value(flag) };
+  }
+
+  function Base() {
+    this.v_ = 5;
+  }
+  Base.prototype.value = function(flag) { return flag ? this.v_ : this.v_; };
+
+
+  var a = new Base();
+  a.a = 1;
+  foo(a, false);
+  foo(a, false);
+
+  var b = new Base();
+  b.b = 1;
+  foo(b, true);
+
+  var c = new Base();
+  c.c = 1;
+  foo(c, true);
+
+  var d = new Base();
+  d.d = 1;
+  d.value(true);
+
+  %OptimizeFunctionOnNextCall(foo);
+
+  var o = foo(b);
+}
+
+test_empty();
+test_narrow1();
+test_narrow2();