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-rw-r--r--js/src/jit-test/tests/ion/truncate.js28
1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/truncate.js b/js/src/jit-test/tests/ion/truncate.js
new file mode 100644
index 000000000..48c0e21da
--- /dev/null
+++ b/js/src/jit-test/tests/ion/truncate.js
@@ -0,0 +1,28 @@
+function f() {
+ var x = Math.pow(2, 31); // take it as argument if constant propagation comes in you way.
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 32
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 33
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 34
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 35
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 36
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 37
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 38
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 39
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 40
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 41
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 42
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 43
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 44
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 45
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 46
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 47
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 48
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 49
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 50
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 51
+ x = x + x; assertEq((x + 1) | 0, 1); // 2 ** 52
+ x = x + x; assertEq((x + 1) | 0, 0); // 2 ** 53
+}
+
+for (var i = 0; i <= 100000; i++)
+ f();