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re PR tree-optimization/42386 (ICE in ipcp_iterate_stage, at ipa-cp.c:766) 

PR c++/42386
	* ipa.c (function_and_variable_visibility): Clear same_comdat_group
	links of DECL_EXTERNAL nodes.

	* g++.dg/opt/dtor3.C: New test.

From-SVN: r155321
This commit is contained in:
Jakub Jelinek 2009-12-17 20:29:48 +01:00 committed by Jakub Jelinek
parent a0274eae64
commit 3fd54fb075
4 changed files with 39 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-12-17 Jakub Jelinek <jakub@redhat.com>
PR c++/42386
* ipa.c (function_and_variable_visibility): Clear same_comdat_group
links of DECL_EXTERNAL nodes.
2009-12-17 Sandra Loosemore <sandra@codesourcery.com>
* doc/rtl.texi (Vector Operations): Clarify vec_select result mode.

17
gcc/ipa.c
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@ -370,6 +370,23 @@ function_and_variable_visibility (bool whole_program)
happy. Clear the flag here to avoid confusion in middle-end. */
if (DECL_COMDAT (node->decl) && !TREE_PUBLIC (node->decl))
DECL_COMDAT (node->decl) = 0;
/* For external decls stop tracking same_comdat_group, it doesn't matter
what comdat group they are in when they won't be emitted in this TU,
and simplifies later passes. */
if (node->same_comdat_group && DECL_EXTERNAL (node->decl))
{
struct cgraph_node *n = node, *next;
do
{
/* If at least one of same comdat group functions is external,
all of them have to be, otherwise it is a front-end bug. */
gcc_assert (DECL_EXTERNAL (n->decl));
next = n->same_comdat_group;
n->same_comdat_group = NULL;
n = next;
}
while (n != node);
}
gcc_assert ((!DECL_WEAK (node->decl) && !DECL_COMDAT (node->decl))
|| TREE_PUBLIC (node->decl) || DECL_EXTERNAL (node->decl));
if (cgraph_externally_visible_p (node, whole_program))

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2009-12-17 Jakub Jelinek <jakub@redhat.com>
PR c++/42386
* g++.dg/opt/dtor3.C: New test.
2009-12-17 Arnaud Charlet <charlet@adacore.com>
* ada/acats/run_all.sh: Strip comments from norun.lst

11
gcc/testsuite/g++.dg/opt/dtor3.C Normal file
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@ -0,0 +1,11 @@
// PR c++/42386
// { dg-do compile }
// { dg-options "-O2" }
# 1 "A.h" 1
#pragma interface
struct D { virtual bool d () const; };
struct E { virtual ~E (); virtual void *e () const = 0; };
struct A : public D, public E { ~A () {} };
# 5 "dtor3.C" 1
struct F : public A { void *f () const; void *e () const; };
void *F::e () const { return __null; }