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-rw-r--r--js/src/jit-test/tests/ion/is-constructing.js62
1 files changed, 62 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/is-constructing.js b/js/src/jit-test/tests/ion/is-constructing.js
new file mode 100644
index 000000000..fc8abcbae
--- /dev/null
+++ b/js/src/jit-test/tests/ion/is-constructing.js
@@ -0,0 +1,62 @@
+var isConstructing = getSelfHostedValue("_IsConstructing");
+
+function testBasic() {
+ var f = function(expected) {
+ with(this) {}; // Don't inline.
+ assertEq(isConstructing(), expected);
+ };
+ for (var i=0; i<40; i++) {
+ f(false);
+ new f(true);
+ }
+}
+testBasic();
+
+function testGeneric() {
+ var f1 = function(expected) {
+ with(this) {};
+ assertEq(isConstructing(), expected);
+ };
+ var f2 = function(expected) {
+ assertEq(isConstructing(), expected);
+ }
+ var funs = [f1, f2];
+ for (var i=0; i<40; i++) {
+ var f = funs[i % 2];
+ f(false);
+ new f(true);
+ }
+}
+testGeneric();
+
+function testArgsRectifier() {
+ var f = function(x) {
+ with(this) {};
+ assertEq(isConstructing(), true);
+ };
+ for (var i=0; i<40; i++)
+ new f();
+}
+testArgsRectifier();
+
+function testBailout() {
+ var f1 = function(x, expected) {
+ if (x > 20) {
+ bailout();
+ assertEq(isConstructing(), expected);
+ }
+ };
+ var f2 = function(x) {
+ return new f1(x, true);
+ };
+ var f3 = function(x) {
+ return f1(x, false);
+ };
+ for (var i=0; i<40; i++) {
+ f2(i);
+ f3(i);
+ }
+ for (var i=0; i<40; i++)
+ f1(i, false);
+}
+testBailout();