Initial commit.

tests/load-int16.ispc

@@ -0,0 +1,12 @@
+export uniform int width() { return programCount; }
+
+export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
+    uniform int x[8] = { 0x00020001, 0x00040003, 0x00060005, 0x00080007,
+                         0x000a0009, 0x000c000b, 0x000e000d, 0x0010000f };
+    unsigned int v = load_from_int16(x, 0);
+    RET[programIndex] = v;
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 1+programIndex;
+}