From 33c9159e09fb29cd6c47e076c6a2006a544884a9 Mon Sep 17 00:00:00 2001
From: Aldy Hernandez <aldyh@redhat.com>
Date: Tue, 11 Apr 2006 01:36:50 +0000
Subject: 20060410.c: New.

	PR/21391
	* testsuite/gcc.dg/20060410.c: New.
	* dwarf2out.c (struct die_struct): Add die_perennial_p field.
	(premark_used_types_helper): New.
	(premark_used_types): New.
	(gen_subprogram_die): Call premark_used_types.
	(prune_unused_types_walk): Do not prune perennial dies.
	* function.c (used_types_insert): New.
	* function.h (struct function): Add used_types_hash field.
	(used_types_insert): Add prototype.
	* Makefile.in (FUNCTION_H): Depend on HASHTAB_H.
	* c-parser.c (c_parser_cast_expression): Save casted types in used
	types hash table.

From-SVN: r112845
---
 gcc/function.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'gcc/function.c')

diff --git a/gcc/function.c b/gcc/function.c
index fd5eeb9..ecdf2823 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -5587,6 +5587,23 @@ rest_of_handle_check_leaf_regs (void)
   return 0;
 }
 
+/* Insert a type into the used types hash table.  */
+void
+used_types_insert (tree t, struct function *func)
+{
+  if (t != NULL && func != NULL)
+    {
+      void **slot;
+
+      if (func->used_types_hash == NULL)
+	func->used_types_hash = htab_create_ggc (37, htab_hash_pointer,
+					     htab_eq_pointer, NULL);
+      slot = htab_find_slot (func->used_types_hash, t, INSERT);
+      if (*slot == NULL)
+	*slot = t;
+    }
+}
+
 struct tree_opt_pass pass_leaf_regs =
 {
   NULL,                                 /* name */
-- 
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