[Mesa-dev] [PATCH 1/3] glsl: Silence unused parameter warnings

Timothy Arceri tarceri at itsqueeze.com
Thu Sep 21 01:09:28 UTC 2017


Hi Ian,

This series causes massive memory use in the glsl_to_tgsi pass for 
gallium drivers. For example with the following test:

./bin/shader_runner_gles3 
tests/spec/glsl-es-3.00/execution/varying-struct-copy-return-vs.shader_test 
-auto


I'm not sure whats going on yet because it crashes my machine so 
quickly. It seems like it may be getting stuck somewhere in this code:

==24131==    by 0xB5E9A6F: 
glsl_to_tgsi_visitor::emit_asm(ir_instruction*, unsigned int, 
st_dst_reg, st_dst_reg, st_src_reg, st_src_reg, st_src_reg, st_src_reg) 
(st_glsl_to_tgsi.cpp:397)
==24131==    by 0xB5EC9E6: emit_asm (st_glsl_to_tgsi.cpp:612)
==24131==    by 0xB5EC9E6: glsl_to_tgsi_visitor::visit(ir_constant*) 
(st_glsl_to_tgsi.cpp:3058)
==24131==    by 0xB5F51C3: glsl_to_tgsi_visitor::visit(ir_assignment*) 
(st_glsl_to_tgsi.cpp:2932)
==24131==    by 0xB5E45D3: glsl_to_tgsi_visitor::visit(ir_function*) 
(st_glsl_to_tgsi.cpp:1185)
==24131==    by 0xB6BD2D0: visit_exec_list(exec_list*, ir_visitor*) 
(ir.cpp:1900)
==24131==    by 0xB5FE312: get_mesa_program_tgsi (st_glsl_to_tgsi.cpp:6559)
==24131==    by 0xB5FE312: st_link_shader (st_glsl_to_tgsi.cpp:6906)
==24131==    by 0xB622A0F: _mesa_glsl_link_shader (ir_to_mesa.cpp:3118)
==24131==    by 0xB52D7CA: link_program (shaderapi.c:1171)
==24131==    by 0xB52D7CA: link_program_error (shaderapi.c:1249)
==24131==    by 0x4F0B65A: stub_glLinkProgram (piglit-dispatch-gen.c:33822)
==24131==    by 0x407A67: link_and_use_shaders (shader_runner.c:1086)
==24131==    by 0x410601: init_test (shader_runner.c:3855)


Tim

On 13/09/17 02:41, Ian Romanick wrote:
> From: Ian Romanick <ian.d.romanick at intel.com>
> 
> glsl/ast_type.cpp: In function ‘void merge_bindless_qualifier(YYLTYPE*, _mesa_glsl_parse_state*, const ast_type_qualifier&, const ast_type_qualifier&)’:
> glsl/ast_type.cpp:189:35: warning: unused parameter ‘loc’ [-Wunused-parameter]
>   merge_bindless_qualifier(YYLTYPE *loc,
>                                     ^~~
> glsl/ast_type.cpp:191:52: warning: unused parameter ‘qualifier’ [-Wunused-parameter]
>                            const ast_type_qualifier &qualifier,
>                                                      ^~~~~~~~~
> glsl/ast_type.cpp:192:52: warning: unused parameter ‘new_qualifier’ [-Wunused-parameter]
>                            const ast_type_qualifier &new_qualifier)
>                                                      ^~~~~~~~~~~~~
> 
> glsl/ir_constant_expression.cpp: In member function ‘virtual ir_constant* ir_rvalue::constant_expression_value(void*, hash_table*)’:
> glsl/ir_constant_expression.cpp:512:44: warning: unused parameter ‘mem_ctx’ [-Wunused-parameter]
>   ir_rvalue::constant_expression_value(void *mem_ctx, struct hash_table *)
>                                              ^~~~~~~
> glsl/ir_constant_expression.cpp: In member function ‘virtual ir_constant* ir_texture::constant_expression_value(void*, hash_table*)’:
> glsl/ir_constant_expression.cpp:705:45: warning: unused parameter ‘mem_ctx’ [-Wunused-parameter]
>   ir_texture::constant_expression_value(void *mem_ctx, struct hash_table *)
>                                               ^~~~~~~
> glsl/ir_constant_expression.cpp: In member function ‘virtual ir_constant* ir_assignment::constant_expression_value(void*, hash_table*)’:
> glsl/ir_constant_expression.cpp:851:48: warning: unused parameter ‘mem_ctx’ [-Wunused-parameter]
>   ir_assignment::constant_expression_value(void *mem_ctx, struct hash_table *)
>                                                  ^~~~~~~
> glsl/ir_constant_expression.cpp: In member function ‘virtual ir_constant* ir_constant::constant_expression_value(void*, hash_table*)’:
> glsl/ir_constant_expression.cpp:859:46: warning: unused parameter ‘mem_ctx’ [-Wunused-parameter]
>   ir_constant::constant_expression_value(void *mem_ctx, struct hash_table *)
>                                                ^~~~~~~
> 
> glsl/linker.cpp: In function ‘void link_xfb_stride_layout_qualifiers(gl_context*, gl_shader_program*, gl_linked_shader*, gl_shader**, unsigned int)’:
> glsl/linker.cpp:1655:60: warning: unused parameter ‘linked_shader’ [-Wunused-parameter]
>                                     struct gl_linked_shader *linked_shader,
>                                                              ^~~~~~~~~~~~~
> glsl/linker.cpp: In function ‘void link_bindless_layout_qualifiers(gl_shader_program*, gl_program*, gl_shader**, unsigned int)’:
> glsl/linker.cpp:1693:52: warning: unused parameter ‘gl_prog’ [-Wunused-parameter]
>                                   struct gl_program *gl_prog,
>                                                      ^~~~~~~
> 
> glsl/lower_distance.cpp: In member function ‘virtual void {anonymous}::lower_distance_visitor_counter::handle_rvalue(ir_rvalue**)’:
> glsl/lower_distance.cpp:652:59: warning: unused parameter ‘rv’ [-Wunused-parameter]
>   lower_distance_visitor_counter::handle_rvalue(ir_rvalue **rv)
>                                                             ^~
> 
> glsl/opt_array_splitting.cpp: In member function ‘virtual ir_visitor_status {anonymous}::ir_array_reference_visitor::visit_leave(ir_assignment*)’:
> glsl/opt_array_splitting.cpp:198:56: warning: unused parameter ‘ir’ [-Wunused-parameter]
>   ir_array_reference_visitor::visit_leave(ir_assignment *ir)
>                                                          ^~
> 
> glsl/glsl_parser_extras.cpp: In function ‘void assign_subroutine_indexes(gl_shader*, _mesa_glsl_parse_state*)’:
> glsl/glsl_parser_extras.cpp:1869:45: warning: unused parameter ‘sh’ [-Wunused-parameter]
>   assign_subroutine_indexes(struct gl_shader *sh,
>                                               ^~
> 
> Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
> ---
>   src/compiler/glsl/ast_type.cpp               | 7 ++-----
>   src/compiler/glsl/glsl_parser_extras.cpp     | 5 ++---
>   src/compiler/glsl/ir_constant_expression.cpp | 8 ++++----
>   src/compiler/glsl/linker.cpp                 | 7 ++-----
>   src/compiler/glsl/lower_distance.cpp         | 2 +-
>   src/compiler/glsl/opt_array_splitting.cpp    | 2 +-
>   6 files changed, 12 insertions(+), 19 deletions(-)
> 
> diff --git a/src/compiler/glsl/ast_type.cpp b/src/compiler/glsl/ast_type.cpp
> index ee8697b..e9d60de 100644
> --- a/src/compiler/glsl/ast_type.cpp
> +++ b/src/compiler/glsl/ast_type.cpp
> @@ -186,10 +186,7 @@ validate_point_mode(MAYBE_UNUSED const ast_type_qualifier &qualifier,
>   }
>   
>   static void
> -merge_bindless_qualifier(YYLTYPE *loc,
> -                         _mesa_glsl_parse_state *state,
> -                         const ast_type_qualifier &qualifier,
> -                         const ast_type_qualifier &new_qualifier)
> +merge_bindless_qualifier(_mesa_glsl_parse_state *state)
>   {
>      if (state->default_uniform_qualifier->flags.q.bindless_sampler) {
>         state->bindless_sampler_specified = true;
> @@ -484,7 +481,7 @@ ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
>          q.flags.q.bindless_image ||
>          q.flags.q.bound_sampler ||
>          q.flags.q.bound_image)
> -      merge_bindless_qualifier(loc, state, *this, q);
> +      merge_bindless_qualifier(state);
>   
>      return r;
>   }
> diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
> index cfb214e..2c42716 100644
> --- a/src/compiler/glsl/glsl_parser_extras.cpp
> +++ b/src/compiler/glsl/glsl_parser_extras.cpp
> @@ -1866,8 +1866,7 @@ set_shader_inout_layout(struct gl_shader *shader,
>   extern "C" {
>   
>   static void
> -assign_subroutine_indexes(struct gl_shader *sh,
> -			  struct _mesa_glsl_parse_state *state)
> +assign_subroutine_indexes(struct _mesa_glsl_parse_state *state)
>   {
>      int j, k;
>      int index = 0;
> @@ -2105,7 +2104,7 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
>      shader->IsES = state->es_shader;
>   
>      if (!state->error && !shader->ir->is_empty()) {
> -      assign_subroutine_indexes(shader, state);
> +      assign_subroutine_indexes(state);
>         lower_subroutine(shader->ir, state);
>   
>         if (!ctx->Cache || force_recompile)
> diff --git a/src/compiler/glsl/ir_constant_expression.cpp b/src/compiler/glsl/ir_constant_expression.cpp
> index 2fc23ba..fe9bd1d 100644
> --- a/src/compiler/glsl/ir_constant_expression.cpp
> +++ b/src/compiler/glsl/ir_constant_expression.cpp
> @@ -509,7 +509,7 @@ constant_referenced(const ir_dereference *deref,
>   
>   
>   ir_constant *
> -ir_rvalue::constant_expression_value(void *mem_ctx, struct hash_table *)
> +ir_rvalue::constant_expression_value(void *, struct hash_table *)
>   {
>      assert(this->type->is_error());
>      return NULL;
> @@ -702,7 +702,7 @@ ir_expression::constant_expression_value(void *mem_ctx,
>   
>   
>   ir_constant *
> -ir_texture::constant_expression_value(void *mem_ctx, struct hash_table *)
> +ir_texture::constant_expression_value(void *, struct hash_table *)
>   {
>      /* texture lookups aren't constant expressions */
>      return NULL;
> @@ -848,7 +848,7 @@ ir_dereference_record::constant_expression_value(void *mem_ctx,
>   
>   
>   ir_constant *
> -ir_assignment::constant_expression_value(void *mem_ctx, struct hash_table *)
> +ir_assignment::constant_expression_value(void *, struct hash_table *)
>   {
>      /* FINISHME: Handle CEs involving assignment (return RHS) */
>      return NULL;
> @@ -856,7 +856,7 @@ ir_assignment::constant_expression_value(void *mem_ctx, struct hash_table *)
>   
>   
>   ir_constant *
> -ir_constant::constant_expression_value(void *mem_ctx, struct hash_table *)
> +ir_constant::constant_expression_value(void *, struct hash_table *)
>   {
>      return this;
>   }
> diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
> index 5c3f1d1..141bf43 100644
> --- a/src/compiler/glsl/linker.cpp
> +++ b/src/compiler/glsl/linker.cpp
> @@ -1652,7 +1652,6 @@ validate_xfb_buffer_stride(struct gl_context *ctx, unsigned idx,
>   static void
>   link_xfb_stride_layout_qualifiers(struct gl_context *ctx,
>                                     struct gl_shader_program *prog,
> -                                  struct gl_linked_shader *linked_shader,
>                                     struct gl_shader **shader_list,
>                                     unsigned num_shaders)
>   {
> @@ -1690,7 +1689,6 @@ link_xfb_stride_layout_qualifiers(struct gl_context *ctx,
>    */
>   static void
>   link_bindless_layout_qualifiers(struct gl_shader_program *prog,
> -                                struct gl_program *gl_prog,
>                                   struct gl_shader **shader_list,
>                                   unsigned num_shaders)
>   {
> @@ -2286,10 +2284,9 @@ link_intrastage_shaders(void *mem_ctx,
>      link_cs_input_layout_qualifiers(prog, gl_prog, shader_list, num_shaders);
>   
>      if (linked->Stage != MESA_SHADER_FRAGMENT)
> -      link_xfb_stride_layout_qualifiers(ctx, prog, linked, shader_list,
> -                                        num_shaders);
> +      link_xfb_stride_layout_qualifiers(ctx, prog, shader_list, num_shaders);
>   
> -   link_bindless_layout_qualifiers(prog, gl_prog, shader_list, num_shaders);
> +   link_bindless_layout_qualifiers(prog, shader_list, num_shaders);
>   
>      populate_symbol_table(linked);
>   
> diff --git a/src/compiler/glsl/lower_distance.cpp b/src/compiler/glsl/lower_distance.cpp
> index 4d8d66b..530f79d 100644
> --- a/src/compiler/glsl/lower_distance.cpp
> +++ b/src/compiler/glsl/lower_distance.cpp
> @@ -649,7 +649,7 @@ lower_distance_visitor_counter::visit(ir_variable *ir)
>   }
>   
>   void
> -lower_distance_visitor_counter::handle_rvalue(ir_rvalue **rv)
> +lower_distance_visitor_counter::handle_rvalue(ir_rvalue **)
>   {
>      return;
>   }
> diff --git a/src/compiler/glsl/opt_array_splitting.cpp b/src/compiler/glsl/opt_array_splitting.cpp
> index d2e81665..7d928b9 100644
> --- a/src/compiler/glsl/opt_array_splitting.cpp
> +++ b/src/compiler/glsl/opt_array_splitting.cpp
> @@ -195,7 +195,7 @@ ir_array_reference_visitor::visit_enter(ir_assignment *ir)
>   }
>   
>   ir_visitor_status
> -ir_array_reference_visitor::visit_leave(ir_assignment *ir)
> +ir_array_reference_visitor::visit_leave(ir_assignment *)
>   {
>      in_whole_array_copy = false;
>   
> 


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