nir: move data.descriptor_set above data.index for better packing

4 bytes down

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>

src/compiler/nir/nir.h

@@ -437,14 +437,14 @@ typedef struct nir_variable {
       enum gl_access_qualifier access:8;
 
       /**
-       * output index for dual source blending.
+       * Descriptor set binding for sampler or UBO.
        */
-      unsigned index;
+      unsigned descriptor_set:5;
 
       /**
-       * Descriptor set binding for sampler or UBO.
+       * output index for dual source blending.
        */
-      unsigned descriptor_set:5;
+      unsigned index;
 
       /**
        * Initial binding point for a sampler or UBO.