Set AllocateRayQuery to ReadNone to allow DCE on unused RayQuery alloc

lib/DXIL/DxilOperations.cpp

@@ -339,7 +339,7 @@ const OP::OpCodeProperty OP::m_OpCodeProps[(unsigned)OP::OpCode::NumOpCodes] = {
   {  OC::WriteSamplerFeedbackGrad, "WriteSamplerFeedbackGrad", OCC::WriteSamplerFeedbackGrad, "writeSamplerFeedbackGrad",  {  true, false, false, false, false, false, false, false, false, false, false}, Attribute::None,     },
 
   // Inline Ray Query                                                                                                        void,     h,     f,     d,    i1,    i8,   i16,   i32,   i64,   udt,   obj ,  function attribute
-  {  OC::AllocateRayQuery,        "AllocateRayQuery",         OCC::AllocateRayQuery,         "allocateRayQuery",          {  true, false, false, false, false, false, false, false, false, false, false}, Attribute::None,     },
+  {  OC::AllocateRayQuery,        "AllocateRayQuery",         OCC::AllocateRayQuery,         "allocateRayQuery",          {  true, false, false, false, false, false, false, false, false, false, false}, Attribute::ReadNone, },
   {  OC::RayQuery_TraceRayInline, "RayQuery_TraceRayInline",  OCC::RayQuery_TraceRayInline,  "rayQuery_TraceRayInline",   {  true, false, false, false, false, false, false, false, false, false, false}, Attribute::None,     },
   {  OC::RayQuery_Proceed,        "RayQuery_Proceed",         OCC::RayQuery_Proceed,         "rayQuery_Proceed",          { false, false, false, false,  true, false, false, false, false, false, false}, Attribute::None,     },
   {  OC::RayQuery_Abort,          "RayQuery_Abort",           OCC::RayQuery_Abort,           "rayQuery_Abort",            {  true, false, false, false, false, false, false, false, false, false, false}, Attribute::None,     },

utils/hct/hctdb.py

@@ -1490,7 +1490,7 @@ class db_dxil(object):
         next_op_idx += 1
 
         # RayQuery
-        self.add_dxil_op("AllocateRayQuery", next_op_idx, "AllocateRayQuery", "allocates space for RayQuery and return handle", "v", "", [
+        self.add_dxil_op("AllocateRayQuery", next_op_idx, "AllocateRayQuery", "allocates space for RayQuery and return handle", "v", "rn", [
             db_dxil_param(0, "i32", "", "handle to RayQuery state"),
             db_dxil_param(2, "u32", "constRayFlags", "Valid combination of RAY_FLAGS", is_const=True)])
         next_op_idx += 1