added addrspace(3,4)->addrspace(0) convertion to ctx->GetElementPtrInst. Appears to work now.

examples_ptx/deferred/kernels.ispc

@@ -506,7 +506,7 @@ RenderTile(uniform int num_groups_x, uniform int num_groups_y,
     uniform float cameraProj_32 = inputHeader.cameraProj[3][2];
 
     // Light intersection: figure out which lights illuminate this tile.
-#if 1 //def __NVPTX__
+#if 1
     uniform int * uniform tileLightIndices = uniform new uniform int [MAX_LIGHTS];
 #define MALLOC
 #else /* shared memory doesn't full work... why? */

examples_ptx/volume_rendering/volume.ispc

@@ -328,7 +328,7 @@ volume_task(uniform float density[], uniform int _nVoxels[3],
 {
   if (taskIndex >= taskCount) return;
 
-#if 0 /* cannot pass shared memory pointers to functions, need to find a way to solve this one :S */
+#if 1 /* cannot pass shared memory pointers to functions, need to find a way to solve this one :S */
   uniform int nVoxels[3];
   nVoxels[0] = _nVoxels[0];
   nVoxels[1] = _nVoxels[1];