1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1000605.js b/js/src/jit-test/tests/ion/bug1000605.js
new file mode 100644
index 000000000..f2c78dbc1
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1000605.js
@@ -0,0 +1,43 @@
+setJitCompilerOption("baseline.warmup.trigger", 0);
+setJitCompilerOption("ion.warmup.trigger", 0);
+
+function ceil(a, b) {
+    return Math.ceil((a | 0) / (b | 0)) | 0;
+}
+function floor(a, b) {
+    return Math.floor((a | 0) / (b | 0)) | 0;
+}
+function round(a, b) {
+    return Math.round((a | 0) / (b | 0)) | 0;
+}
+function intdiv(a, b) {
+    return ((a | 0) / (b | 0)) | 0;
+}
+
+// Always rounds up.
+assertEq(ceil(5, 5), 1);
+assertEq(ceil(4, 3), 2);
+assertEq(ceil(5, 3), 2);
+assertEq(ceil(-4, 3), -1);
+assertEq(ceil(-5, 3), -1);
+
+// Always rounds down.
+assertEq(floor(5, 5), 1);
+assertEq(floor(4, 3), 1);
+assertEq(floor(5, 3), 1);
+assertEq(floor(-4, 3), -2);
+assertEq(floor(-5, 3), -2);
+
+// Always rounds towards the nearest.
+assertEq(round(5, 5), 1);
+assertEq(round(4, 3), 1);
+assertEq(round(5, 3), 2);
+assertEq(round(-4, 3), -1);
+assertEq(round(-5, 3), -2);
+
+// Always rounds towards zero.
+assertEq(intdiv(5, 5), 1);
+assertEq(intdiv(4, 3), 1);
+assertEq(intdiv(5, 3), 1);
+assertEq(intdiv(-4, 3), -1);
+assertEq(intdiv(-5, 3), -1);