1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/regalloc-live.js b/js/src/jit-test/tests/jaeger/regalloc-live.js
new file mode 100644
index 0000000000..b50ee2a2d3
--- /dev/null
+++ b/js/src/jit-test/tests/jaeger/regalloc-live.js
@@ -0,0 +1,41 @@
+
+// test local/arg liveness analysis in presence of many locals
+
+function foo(a, b, c) {
+  var x = 0, y = 0, z = 0;
+  if (a < b) {
+    x = a + 0;
+    y = b + 0;
+    z = c + 0;
+  } else {
+    x = a;
+    y = b;
+    z = c;
+  }
+  return x + y + z;
+}
+assertEq(foo(1, 2, 3), 6);
+
+// restore liveness correctly before switch statements
+
+function foo(a, b, c) {
+  var x = 0, y = 0, z = 0;
+  if (a < b) {
+    x = a + 0;
+    y = b + 0;
+    z = c + 0;
+  } else {
+    switch (c) {
+    case 1:
+    case 2:
+    case 3:
+    case 4:
+    case 5: return 0;
+    }
+    x = 0;
+    y = 0;
+    z = 0;
+  }
+  return x + y + z;
+}
+assertEq(foo(1, 2, 3), 6);