mesa: hook up core bits of GL_ARB_shader_group_vote

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

src/compiler/glsl/ir.h

@@ -1481,10 +1481,17 @@ enum ir_expression_operation {
     */
    ir_unop_ssbo_unsized_array_length,
 
+   /**
+    * Vote among threads on the value of the boolean argument.
+    */
+   ir_unop_vote_any,
+   ir_unop_vote_all,
+   ir_unop_vote_eq,
+
    /**
     * A sentinel marking the last of the unary operations.
     */
-   ir_last_unop = ir_unop_ssbo_unsized_array_length,
+   ir_last_unop = ir_unop_vote_eq,
 
    ir_binop_add,
    ir_binop_sub,