nir/print: Factor variable name lookup into a helper

Otherwise, we have a problem when we go to print functions with arguments
because their names get added to the hash table during declaration which
happens after we print the prototype.

diff --git a/src/glsl/nir/nir_print.c b/src/glsl/nir/nir_print.c
index 10f46ce..26b1cbb 100644 (file)
--- a/src/glsl/nir/nir_print.c
+++ b/src/glsl/nir/nir_print.c
@@ -219,6 +219,35 @@ print_alu_instr(nir_alu_instr *instr, print_state *state)
    }
 }
 
+static const char *
+get_var_name(nir_variable *var, print_state *state)
+{
+   if (state->ht == NULL)
+      return var->name;
+
+   assert(state->syms);
+
+   struct hash_entry *entry = _mesa_hash_table_search(state->ht, var);
+   if (entry)
+      return entry->data;
+
+   char *name;
+
+   struct set_entry *set_entry = _mesa_set_search(state->syms, var->name);
+   if (set_entry != NULL) {
+      /* we have a collision with another name, append an @ + a unique index */
+      name = ralloc_asprintf(state->syms, "%s@%u", var->name, state->index++);
+   } else {
+      /* Mark this one as seen */
+      _mesa_set_add(state->syms, var->name);
+      name = var->name;
+   }
+
+   _mesa_hash_table_insert(state->ht, var, name);
+
+   return name;
+}
+
 static void
 print_var_decl(nir_variable *var, print_state *state)
 {
@@ -239,20 +268,7 @@ print_var_decl(nir_variable *var, print_state *state)
 
    glsl_print_type(var->type, fp);
 
-   struct set_entry *entry = NULL;
-   if (state->syms)
-      entry = _mesa_set_search(state->syms, var->name);
-
-   char *name;
-
-   if (entry != NULL) {
-      /* we have a collision with another name, append an @ + a unique index */
-      name = ralloc_asprintf(state->syms, "%s@%u", var->name, state->index++);
-   } else {
-      name = var->name;
-   }
-
-   fprintf(fp, " %s", name);
+   fprintf(fp, " %s", get_var_name(var, state));
 
    if (var->data.mode == nir_var_shader_in ||
        var->data.mode == nir_var_shader_out ||
@@ -296,28 +312,13 @@ print_var_decl(nir_variable *var, print_state *state)
    }
 
    fprintf(fp, "\n");
-
-   if (state->syms) {
-      _mesa_set_add(state->syms, name);
-      _mesa_hash_table_insert(state->ht, var, name);
-   }
 }
 
 static void
 print_var(nir_variable *var, print_state *state)
 {
    FILE *fp = state->fp;
-   const char *name;
-   if (state->ht) {
-      struct hash_entry *entry = _mesa_hash_table_search(state->ht, var);
-
-      assert(entry != NULL);
-      name = entry->data;
-   } else {
-      name = var->name;
-   }
-
-   fprintf(fp, "%s", name);
+   fprintf(fp, "%s", get_var_name(var, state));
 }
 
 static void