glsl: make use of glsl_type::is_float()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

src/compiler/glsl/ir_function.cpp

@@ -150,12 +150,12 @@ get_parameter_match_type(const ir_variable *param,
       return PARAMETER_EXACT_MATCH;
 
    if (to_type->is_double()) {
-      if (from_type->base_type == GLSL_TYPE_FLOAT)
+      if (from_type->is_float())
          return PARAMETER_FLOAT_TO_DOUBLE;
       return PARAMETER_INT_TO_DOUBLE;
    }
 
-   if (to_type->base_type == GLSL_TYPE_FLOAT)
+   if (to_type->is_float())
       return PARAMETER_INT_TO_FLOAT;
 
    /* int -> uint and any other oddball conversions */