mesa/glsl: add nir fields to the gl shader structs

Acked-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31137>

src/compiler/glsl/glsl_parser_extras.cpp

@@ -2447,6 +2447,8 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
    }
 
    ralloc_free(shader->ir);
+   ralloc_free(shader->nir);
+   shader->nir = NULL;
    shader->ir = new(shader) exec_list;
    if (!state->error && !state->translation_unit.is_empty())
       _mesa_ast_to_hir(shader->ir, state);

src/mesa/main/shader_types.h

@@ -42,6 +42,8 @@
 
 #include "pipe/p_state.h"
 
+struct nir_shader;
+
 /**
  * Shader information needed by both gl_shader and gl_linked shader.
  */
@@ -178,6 +180,7 @@ struct gl_shader
     */
    GLbitfield BlendSupport;
 
+   struct nir_shader *nir;
    struct exec_list *ir;
    struct glsl_symbol_table *symbols;
 

src/mesa/main/shaderobj.c

@@ -134,6 +134,7 @@ _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh)
    free((void *)sh->Source);
    free((void *)sh->FallbackSource);
    free(sh->Label);
+   ralloc_free(sh->nir);
    ralloc_free(sh);
 }