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tree-inline.c (initialize_cfun): Remove asserts for calls_setjmp and alls_alloca function flags. 

2009-02-25  Martin Jambor  <mjambor@suse.cz>

	* tree-inline.c (initialize_cfun): Remove asserts for calls_setjmp and
	alls_alloca function flags.
	(copy_bb): Set calls_setjmp and alls_alloca function flags if such
	calls are detected.

From-SVN: r144428
This commit is contained in:
Martin Jambor 2009-02-25 18:34:40 +01:00 committed by Martin Jambor
parent 054efbba9d
commit f618d33ef1
4 changed files with 60 additions and 4 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2009-02-25 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/39259
* tree-inline.c (initialize_cfun): Remove asserts for calls_setjmp and
alls_alloca function flags.
(copy_bb): Set calls_setjmp and alls_alloca function flags if such
calls are detected.
2009-02-25 Paolo Bonzini <bonzini@gnu.org>
* regmove.c (discover_flags_reg, flags_set_1, mark_flags_life_zones,

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2009-02-25 Martin Jambor <mjambor@suse.cz>
PR tree-optimizations/39259
* g++.dg/torture/pr39259.C: New testcase.
2009-02-24 Richard Guenther <rguenther@suse.de>
PR c++/39242

40
gcc/testsuite/g++.dg/torture/pr39259.C Normal file
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@ -0,0 +1,40 @@
// PR tree-optimization/39259
// { dg-do compile }
// { dg-options "-O2" }
extern "C" int __mysetjmp () __attribute__ ((__returns_twice__));
class TContStatus {};
class TContEvent
{
public:
inline void Execute () throw();
};
class TCont
{
public:
TContStatus ReadD (void* buf, int deadline)
{
TContEvent event;
event.Execute ();
return TContStatus();
}
TContStatus ReadI (void *buf)
{
return ReadD (buf, 1);
}
};
void TContEvent::Execute () throw ()
{
__mysetjmp();
}
void Broken (TCont *mCont)
{
mCont->ReadI(0);
mCont->ReadI(0);
}

12
gcc/tree-inline.c
View File

@ -1398,6 +1398,7 @@ copy_bb (copy_body_data *id, basic_block bb, int frequency_scale,
{
struct cgraph_node *node;
struct cgraph_edge *edge;
int flags;
switch (id->transform_call_graph_edges)
{
@ -1429,6 +1430,13 @@ copy_bb (copy_body_data *id, basic_block bb, int frequency_scale,
default:
gcc_unreachable ();
}
flags = gimple_call_flags (stmt);
if (flags & ECF_MAY_BE_ALLOCA)
cfun->calls_alloca = true;
if (flags & ECF_RETURNS_TWICE)
cfun->calls_setjmp = true;
}
/* If you think we can abort here, you are wrong.
@ -1745,10 +1753,6 @@ initialize_cfun (tree new_fndecl, tree callee_fndecl, gcov_type count,
gcc_assert (cfun->cfg == NULL);
gcc_assert (cfun->decl == new_fndecl);
/* No need to copy; this is initialized later in compilation. */
gcc_assert (!src_cfun->calls_setjmp);
gcc_assert (!src_cfun->calls_alloca);
/* Copy items we preserve during clonning. */
cfun->static_chain_decl = src_cfun->static_chain_decl;
cfun->nonlocal_goto_save_area = src_cfun->nonlocal_goto_save_area;