This patch fixes a bug in exposed in LIPO build (ICE in copy tree node).
Tested with bookstrap and google internal benchmarks.
-Rong
2013-05-24 Rong Xu <x...@google.com>
Google ref b/8963414.
* gcc/tree-inline.c (add_local_variables): Not map
to deleted debug expression.
Index: gcc/tree-inline.c
===================================================================
--- gcc/tree-inline.c (revision 199128)
+++ gcc/tree-inline.c (working copy)
@@ -3788,6 +3788,17 @@ add_local_variables (struct function *callee, stru
{
tree tem = DECL_DEBUG_EXPR (var);
bool old_regimplify = id->regimplify;
+
+ /* The mapped debug expression might be deleted
+ as a varpool node (the reachbility analysis
+ of varpool node does not check the reference
+ from debug expressions.
+ Set it to 0 if that's the case. */
+ if (L_IPO_COMP_MODE && tem &&
+ (TREE_STATIC (tem) || DECL_EXTERNAL(tem)) &&
+ real_varpool_node (tem) == NULL)
+ tem = NULL;
+
id->remapping_type_depth++;
walk_tree (&tem, copy_tree_body_r, id, NULL);
id->remapping_type_depth--;
--
This patch is available for review at http://codereview.appspot.com/9760043
