Bug 1440519: Check for SIMD existence on the global object in test; r=jandem

MozReview-Commit-ID: 2ViBTsHqdMU

--HG--
extra : rebase_source : 0ee0954f37dbfa04e28c5974455501413c13e4b3

js/src/jit-test/tests/SIMD/bug1435317.js

@@ -1,3 +1,5 @@
+load(libdir + 'simd.js');
+
 var ab = new ArrayBuffer(64 * 1024);
 var arr = new Uint8Array(ab);
 
@@ -21,4 +23,3 @@ function testSimdX4() {
 
 setJitCompilerOption('ion.warmup.trigger', 0);
 testSimdX4();
-