intel/compiler: Reverse inclusion dependency between brw_cfg.h and brw_shader.h

This reflects the natural dependency relationship between brw_cfg.h
and brw_shader.h.  brw_cfg.h only requires the base IR definitions
which are now part of a separate header.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4012>

src/intel/compiler/brw_cfg.cpp

@@ -26,6 +26,7 @@
  */
 
 #include "brw_cfg.h"
+#include "brw_shader.h"
 
 /** @file brw_cfg.cpp
  *

src/intel/compiler/brw_cfg.h

@@ -28,7 +28,7 @@
 #ifndef BRW_CFG_H
 #define BRW_CFG_H
 
-#include "brw_shader.h"
+#include "brw_ir.h"
 
 struct bblock_t;
 
@@ -70,7 +70,8 @@ struct bblock_link {
    enum bblock_link_kind kind;
 };
 
-struct backend_instruction;
+struct backend_shader;
+struct cfg_t;
 
 struct bblock_t {
 #ifdef __cplusplus

src/intel/compiler/brw_predicated_break.cpp

@@ -21,7 +21,7 @@
  * IN THE SOFTWARE.
  */
 
-#include "brw_cfg.h"
+#include "brw_shader.h"
 
 using namespace brw;
 

src/intel/compiler/brw_shader.h

@@ -25,12 +25,10 @@
 #define BRW_SHADER_H
 
 #include <stdint.h>
-#include "brw_ir.h"
+#include "brw_cfg.h"
 #include "brw_compiler.h"
 #include "compiler/nir/nir.h"
 
-struct cfg_t;
-
 #ifdef __cplusplus
 #include "brw_ir_allocator.h"