1 files changed, 74 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testApplyArrayInline.js b/js/src/jit-test/tests/basic/testApplyArrayInline.js
new file mode 100644
index 0000000000..75b5d9239c
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testApplyArrayInline.js
@@ -0,0 +1,74 @@
+// |jit-test| skip-if: !this.getJitCompilerOptions() || !getJitCompilerOptions()['ion.enable']; --ion-warmup-threshold=50
+
+// Test inlining in Ion of fun.apply(..., array).
+
+setJitCompilerOption("offthread-compilation.enable", 0);
+gcPreserveCode();
+
+var itercount = 1000;
+var warmup = 100;
+
+// Force Ion to do something predictable without having to wait
+// forever for it.
+
+if (getJitCompilerOptions()["ion.warmup.trigger"] > warmup)
+    setJitCompilerOption("ion.warmup.trigger", warmup);
+
+setJitCompilerOption("offthread-compilation.enable", 0);
+
+function g(a, b, c, d) {
+    return a + b + c + (d === undefined);
+}
+
+var g_inIonInLoop = false;
+var g_inIonAtEnd = false;
+
+function f(xs) {
+    var sum = 0;
+    var inIonInLoop = 0;
+    for ( var i=0 ; i < itercount ; i++ ) {
+	inIonInLoop |= inIon();
+	sum += g.apply(null, xs);
+    }
+    g_ionAtEnd = inIon();
+    g_inIonInLoop = !!inIonInLoop;
+    return sum;
+}
+
+// Basic test
+
+assertEq(f([1,2,3,4]), 6*itercount);
+
+// Attempt to detect a botched optimization: either we ion-compiled
+// the loop, or we did not ion-compile the function (ion not actually
+// effective at all, this can happen).
+
+assertEq(g_inIonInLoop || !g_inIonAtEnd, true);
+
+// If Ion is inert just leave.
+
+if (!g_inIonInLoop) {
+    print("Leaving early - ion not kicking in at all");
+    quit(0);
+}
+
+// Test that we get the correct argument value even if the array has
+// fewer initialized members than its length.
+
+var headroom = [1,2,3];
+headroom.length = 13;
+assertEq(f(headroom), 7*itercount);
+
+// Test that we throw when the array is too long.
+
+var thrown = false;
+try {
+    var long = [];
+    long.length = getMaxArgs() + 1;
+    f(long);
+}
+catch (e) {
+    thrown = true;
+    assertEq(e instanceof RangeError, true);
+}
+assertEq(thrown, true);