added uniform memory test.

tests/uniform-1.ispc

@@ -0,0 +1,41 @@
+
+export uniform int width() { return programCount; }
+
+
+task void f_f_task(uniform float RET[], uniform float aFOO[]) {
+    uniform float val[programCount];
+    for (uniform int i = 0; i < programCount; ++i)
+        val[i] = 0;
+
+    foreach (i = 0 ... programCount)
+        val[i] += aFOO[programCount*taskIndex + i] - 1;
+
+    uniform float sum = 0;
+    for (uniform int i = 0; i < programCount; ++i)
+        sum += val[i];
+
+    if (programIndex < 32/4)
+      RET[programCount/4*taskIndex + programIndex] = sum;
+}
+
+export void f_f(uniform float RET[], uniform float aFOO[]) 
+{
+  launch[4] f_f_task(RET,  aFOO);
+}
+task void result_task(uniform float RET[])
+{
+  uniform float ret = -1;
+  switch (taskIndex)
+  {
+    case 0: ret = 496; break;
+    case 1: ret = 1520; break;
+    case 2: ret = 2544; break;
+    case 3: ret = 3568; break;
+  }
+  if (programIndex < 32/4)
+    RET[programCount/4*taskIndex + programIndex] = ret;
+}
+
+export void result(uniform float RET[]) {
+  launch[4] result_task(RET);
+}