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Fix infinite recursion when recursively inlining function with alias
- From: Jan Hubicka <hubicka at ucw dot cz>
- To: gcc-patches at gcc dot gnu dot org
- Date: Fri, 5 Aug 2011 16:45:02 +0200
- Subject: Fix infinite recursion when recursively inlining function with alias
Hi,
this patch fixes the infinite recursion triggered when buildling MIPS libgcc.
Bootstrapping/regtesting x86_64-linux and will commit it once it passes. Thanks to Richard
for reducing the testcase.
Honza
PR middle-end/49735
* gcc.c-torture/compile/pr49735.c: New testcase
* ipa-inline.c (recursive_inlining): Look through aliases.
Index: gcc/testsuite/gcc.c-torture/compile/pr49735.c
===================================================================
--- gcc/testsuite/gcc.c-torture/compile/pr49735.c (revision 0)
+++ gcc/testsuite/gcc.c-torture/compile/pr49735.c (revision 0)
@@ -0,0 +1,4 @@
+/* { dg-require-alias "" } */
+void bar (void);
+static void foo (void) { bar (); }
+void bar (void) __attribute__((alias("foo")));
Index: gcc/ipa-inline.c
===================================================================
--- gcc/ipa-inline.c (revision 177411)
+++ gcc/ipa-inline.c (working copy)
@@ -1206,8 +1206,9 @@ recursive_inlining (struct cgraph_edge *
depth = 1;
for (cnode = curr->caller;
cnode->global.inlined_to; cnode = cnode->callers->caller)
- if (node->decl == curr->callee->decl)
- depth++;
+ if (node->decl
+ == cgraph_function_or_thunk_node (curr->callee, NULL)->decl)
+ depth++;
if (!want_inline_self_recursive_call_p (curr, node, false, depth))
continue;