intel/ir: Use brw::performance object instead of CFG cycle counts for codegen stats.

These should be more accurate than the current cycle counts, since
among other things they consider the effect of post-scheduling passes
like the software scoreboard on TGL.  In addition it will enable us to
clean up some of the now redundant cycle-count estimation
functionality in the instruction scheduler.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/intel/compiler/brw_vec4.h

@@ -48,6 +48,7 @@ brw_vec4_generate_assembly(const struct brw_compiler *compiler,
                            const nir_shader *nir,
                            struct brw_vue_prog_data *prog_data,
                            const struct cfg_t *cfg,
+                           const brw::performance &perf,
                            struct brw_compile_stats *stats);
 
 #ifdef __cplusplus