From: Matthias Braun <matze@braunis.de>
Date: Wed, 10 Feb 2010 23:05:45 +0000 (+0000)
Subject: support for local common symbols (whatever that is good for); introduce ir_visibility... 
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=4f2e72b82ad87a0cd9e9d808f77557da7e0ce55f;p=cparser

support for local common symbols (whatever that is good for); introduce ir_visibility_private (not tested yet as they don't occur in C)

[r27109]
---

diff --git a/ast2firm.c b/ast2firm.c
index b3079cb..c47b8eb 100644
--- a/ast2firm.c
+++ b/ast2firm.c
@@ -4548,8 +4548,13 @@ static void create_global_variable(entity_t *entity)
 	assert(entity->kind == ENTITY_VARIABLE);
 
 	switch ((storage_class_tag_t)entity->declaration.storage_class) {
-	case STORAGE_CLASS_STATIC: visibility = ir_visibility_local; break;
 	case STORAGE_CLASS_EXTERN: visibility = ir_visibility_external; break;
+	case STORAGE_CLASS_STATIC:
+		visibility = ir_visibility_local;
+		/* uninitialized globals get merged in C */
+		if (entity->variable.initializer == NULL)
+			linkage |= IR_LINKAGE_MERGE;
+		break;
 	case STORAGE_CLASS_NONE:
 		visibility = ir_visibility_default;
 		/* uninitialized globals get merged in C */