PR middle-end/48044

	* ipa.c (cgraph_remove_unreachable_nodes): Enqueue
	all vnode->force_output nodes as needed.

	* gcc.dg/torture/pr48044.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@170873 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4eb1024..1da3589 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-03-11  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/48044
+       * ipa.c (cgraph_remove_unreachable_nodes): Enqueue
+       all vnode->force_output nodes as needed.
+
 2011-03-11  Jason Merrill  <jason@redhat.com>
 
        PR c++/48069

diff --git a/gcc/ipa.c b/gcc/ipa.c
index 0320ded..4955408 100644 (file)
--- a/gcc/ipa.c
+++ b/gcc/ipa.c
@@ -1,5 +1,5 @@
 /* Basic IPA optimizations and utilities.
-   Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009, 2010
+   Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -259,7 +259,7 @@ cgraph_remove_unreachable_nodes (bool before_inlining_p, FILE *file)
     {
       vnode->next_needed = NULL;
       vnode->prev_needed = NULL;
-      if (vnode->analyzed
+      if ((vnode->analyzed || vnode->force_output)
          && !varpool_can_remove_if_no_refs (vnode))
        {
          vnode->needed = false;

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 54d77a6..6169459 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-03-11  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/48044
+       * gcc.dg/torture/pr48044.c: New test.
+
 2011-03-11  Janus Weil  <janus@gcc.gnu.org>
 
        PR fortran/47768

diff --git a/gcc/testsuite/gcc.dg/torture/pr48044.c b/gcc/testsuite/gcc.dg/torture/pr48044.c
new file mode 100644 (file)
index 0000000..fe3b734
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr48044.c
@@ -0,0 +1,7 @@
+/* PR middle-end/48044 */
+/* { dg-do compile } */
+/* { dg-require-alias "" } */
+
+int a __asm__ ("b") = 0;
+extern int c __asm__ ("a") __attribute__ ((alias ("b")));
+extern int d __attribute__ ((weak, alias ("a")));