Fix deoptimization bug, where recursive call can frighten and confuse the unwitting, simple, poor c…

test/mjsunit/compiler/regress-shared-deopt.js

Index: test/mjsunit/compiler/regress-shared-deopt.js
diff --git a/test/mjsunit/regress/regress-seqstrsetchar-ex3.js b/test/mjsunit/compiler/regress-shared-deopt.js
similarity index 75%
copy from test/mjsunit/regress/regress-seqstrsetchar-ex3.js
copy to test/mjsunit/compiler/regress-shared-deopt.js
index e2592a1615aa6bcfbbaa688319b8a0f6d34aa4a7..cbad47d72dbed6ea4eae4bdc06a6699fba6afae1 100644
--- a/test/mjsunit/regress/regress-seqstrsetchar-ex3.js
+++ b/test/mjsunit/compiler/regress-shared-deopt.js
@@ -27,19 +27,39 @@
 
 // Flags: --allow-natives-syntax
 
+var soft = false;
+
+// disable optimization of this global
+soft = true;
+soft = false;
+soft = true;
+soft = false;
+
 function test() {

[Toon Verwaest, 2013/08/21 15:33:17]

2-space indent.

[titzer, 2013/08/21 16:20:48]

Done.

-  var string = %NewString(10, true);
-  for (var i = 0; i < 10; i++) {
-    %_OneByteSeqStringSetChar(string, i, 65);
-    %_OneByteSeqStringSetChar(string, i, 66);
-  }
-  for (var i = 0; i < 10; i++) {
-    assertEquals("B", string[i]);
-  }
+    var f4 = makeF(4);
+    var f5 = makeF(5);
+
+    function makeF(i) {
+        return function f(x) {
+            if (x == 0) return i;
+            if (i == 4) if (soft) print("wahoo" + i);
+            return f4(x - 1);
+        }
+    }
+
+    f4(9);
+    f4(11);
+    %OptimizeFunctionOnNextCall(f4);
+    f4(12);
+
+    f5(9);
+    f5(11);
+    %OptimizeFunctionOnNextCall(f5);
+    f5(12);
+
+    soft = true;
+    f4(1);
+    f5(9);
 }
 
 test();
-test();
-%OptimizeFunctionOnNextCall(test);
-test();
-