From 6a15d5b514b703ff8dd024f96ffbcb68484a954e Mon Sep 17 00:00:00 2001
From: Ian Romanick <ian.d.romanick@intel.com>
Date: Wed, 31 Mar 2010 16:37:10 -0700
Subject: [PATCH] Use ir_function::add_signature to create link between
 function and signature

ir_function_signature now has a pointer back to the ir_function that owns it.
---
 ast_to_hir.cpp       |  2 +-
 builtin_function.cpp |  2 +-
 glsl_types.cpp       |  8 ++++----
 ir.h                 | 12 ++++++++++++
 4 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/ast_to_hir.cpp b/ast_to_hir.cpp
index 5341dd59ce2..78c92822e30 100644
--- a/ast_to_hir.cpp
+++ b/ast_to_hir.cpp
@@ -1530,7 +1530,7 @@ ast_function_definition::hir(exec_list *instructions,
     */
    if (signature == NULL) {
       signature = new ir_function_signature(return_type);
-      f->signatures.push_tail(signature);
+      f->add_signature(signature);
    } else {
       /* Destroy all of the previous parameter information.  The previous
        * parameter information comes from the function prototype, and it can
diff --git a/builtin_function.cpp b/builtin_function.cpp
index 8e7e1164b8c..684a10c8893 100644
--- a/builtin_function.cpp
+++ b/builtin_function.cpp
@@ -214,7 +214,7 @@ generate_function_instance(ir_function *f,
    ir_variable *declarations[17];
 
    ir_function_signature *const sig = new ir_function_signature(type);
-   f->signatures.push_tail(sig);
+   f->add_signature(sig);
 
    ir_label *const label = new ir_label(name);
    instructions->push_tail(label);
diff --git a/glsl_types.cpp b/glsl_types.cpp
index a38750e9bb1..ba4f0297d81 100644
--- a/glsl_types.cpp
+++ b/glsl_types.cpp
@@ -129,7 +129,7 @@ glsl_type::generate_constructor_prototype(glsl_symbol_table *symtab) const
    assert(added);
 
    ir_function_signature *const sig = new ir_function_signature(this);
-   f->signatures.push_tail(sig);
+   f->add_signature(sig);
 
    for (unsigned i = 0; i < length; i++) {
       char *const param_name = (char *) malloc(10);
@@ -433,7 +433,7 @@ generate_constructor(glsl_symbol_table *symtab, const struct glsl_type *types,
        * appropriate from-scalars constructor.
        */
       ir_function_signature *const sig = new ir_function_signature(& types[i]);
-      f->signatures.push_tail(sig);
+      f->add_signature(sig);
 
       sig->definition =
 	 generate_constructor_intro(& types[i], 1, & sig->parameters,
@@ -444,7 +444,7 @@ generate_constructor(glsl_symbol_table *symtab, const struct glsl_type *types,
 
 	 ir_function_signature *const vec_sig =
 	    new ir_function_signature(& types[i]);
-	 f->signatures.push_tail(vec_sig);
+	 f->add_signature(vec_sig);
 
 	 vec_sig->definition =
 	    generate_constructor_intro(& types[i], types[i].vector_elements,
@@ -458,7 +458,7 @@ generate_constructor(glsl_symbol_table *symtab, const struct glsl_type *types,
 
 	 ir_function_signature *const mat_sig =
 	    new ir_function_signature(& types[i]);
-	 f->signatures.push_tail(mat_sig);
+	 f->add_signature(mat_sig);
 
 	 mat_sig->definition =
 	    generate_constructor_intro(& types[i],
diff --git a/ir.h b/ir.h
index aa3e03a2111..2d2da1df763 100644
--- a/ir.h
+++ b/ir.h
@@ -160,6 +160,12 @@ public:
     * Pointer to the label that begins the function definition.
     */
    ir_label *definition;
+
+private:
+   /** Function of which this signature is one overload. */
+   class ir_function *function;
+
+   friend class ir_function;
 };
 
 
@@ -175,6 +181,12 @@ public:
       v->visit(this);
    }
 
+   void add_signature(ir_function_signature *sig)
+   {
+      sig->function = this;
+      signatures.push_tail(sig);
+   }
+
    /**
     * Find a signature that matches a set of actual parameters.
     */
-- 
2.30.2