[Mesa-dev] [PATCH] glsl: Add single declaration variables to the symbol table too.

[Kenneth Graunke]

The lexer/parser use a symbol table to classify identifiers as
variables, functions, or structure types.

For some reason, we neglected to add variables in simple declarations
such as

    int x = 5;

but did add subsequent variables in multi-declarations:

    int x = 5, y = 6; // y gets added, but not x, for some reason

Fixes Piglit's spec/glsl-1.20/compiler/scoping-struct-vs-variable.vert.

Fixes four dEQP-GLES2.functional.shaders.scoping.valid subcases:
- local_int_variable_hides_struct_type_vertex
- local_int_variable_hides_struct_type_fragment
- local_struct_variable_hides_struct_type_vertex
- local_struct_variable_hides_struct_type_fragment

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
 src/compiler/glsl/glsl_parser.yy | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/compiler/glsl/glsl_parser.yy b/src/compiler/glsl/glsl_parser.yy
index 99bd0e6..d69c48e 100644
--- a/src/compiler/glsl/glsl_parser.yy
+++ b/src/compiler/glsl/glsl_parser.yy
@@ -1062,6 +1062,7 @@ single_declaration:
       $$ = new(ctx) ast_declarator_list($1);
       $$->set_location_range(@1, @2);
       $$->declarations.push_tail(&decl->link);
+      state->symbols->add_variable(new(state) ir_variable(NULL, $2, ir_var_auto));
    }
    | fully_specified_type any_identifier array_specifier
    {
@@ -1072,6 +1073,7 @@ single_declaration:
       $$ = new(ctx) ast_declarator_list($1);
       $$->set_location_range(@1, @3);
       $$->declarations.push_tail(&decl->link);
+      state->symbols->add_variable(new(state) ir_variable(NULL, $2, ir_var_auto));
    }
    | fully_specified_type any_identifier array_specifier '=' initializer
    {
@@ -1082,6 +1084,7 @@ single_declaration:
       $$ = new(ctx) ast_declarator_list($1);
       $$->set_location_range(@1, @3);
       $$->declarations.push_tail(&decl->link);
+      state->symbols->add_variable(new(state) ir_variable(NULL, $2, ir_var_auto));
    }
    | fully_specified_type any_identifier '=' initializer
    {
@@ -1092,6 +1095,7 @@ single_declaration:
       $$ = new(ctx) ast_declarator_list($1);
       $$->set_location_range(@1, @2);
       $$->declarations.push_tail(&decl->link);
+      state->symbols->add_variable(new(state) ir_variable(NULL, $2, ir_var_auto));
    }
    | INVARIANT variable_identifier
    {
-- 
2.7.2