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s390.c (s390_regs_ever_clobbered): Only save live eh regs for a function containing a landing pad.

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2005-11-09  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390.c (s390_regs_ever_clobbered): Only save live eh regs
	for a function containing a landing pad.
	* testsuite/g++.dg/other/pr24623.C: Testcase added.

From-SVN: r106687
This commit is contained in:
Andreas Krebbel 2005-11-09 11:42:38 +00:00 • committed by Andreas Krebbel
parent 7221b4a18c
commit 297a777d47
3 changed files with 79 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2005-11-09 Andreas Krebbel <krebbel1@de.ibm.com>
* config/s390/s390.c (s390_regs_ever_clobbered): Only save live eh regs
for a function containing a landing pad.
* testsuite/g++.dg/other/pr24623.C: Testcase added.
2005-11-09 Andreas Krebbel <krebbel1@de.ibm.com>
* flow.c (mark_set_1): Handle CLOBBERs like SETs if the register

5
gcc/config/s390/s390.c
View file

@ -6009,7 +6009,10 @@ s390_regs_ever_clobbered (int *regs_ever_clobbered)
deal with this automatically. */
if (current_function_calls_eh_return || cfun->machine->has_landing_pad_p)
for (i = 0; EH_RETURN_DATA_REGNO (i) != INVALID_REGNUM ; i++)
regs_ever_clobbered[EH_RETURN_DATA_REGNO (i)] = 1;
if (current_function_calls_eh_return
|| (cfun->machine->has_landing_pad_p
&& regs_ever_live [EH_RETURN_DATA_REGNO (i)]))
regs_ever_clobbered[EH_RETURN_DATA_REGNO (i)] = 1;
/* For nonlocal gotos all call-saved registers have to be saved.
This flag is also set for the unwinding code in libgcc.

69
gcc/testsuite/g++.dg/other/pr24623.C Normal file
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@ -0,0 +1,69 @@
/* This used to ICE due to a backend problem on s390. */
/* { dg-do compile } */
/* { dg-options "-O1" } */
class ReferenceCounted
{
public:
virtual ~ ReferenceCounted ()
{
}
void decrementRefCount () const
{
if (--const_cast < unsigned int &>(_ref_count) == 0)
{
delete this;
}
}
unsigned int _ref_count;
};
template < class T > class RefCountPointer
{
public:
RefCountPointer (T * p = 0):_p (p)
{
}
RefCountPointer & operator= (const RefCountPointer < T > &o)
{
if (_p != o._p)
{
if (_p != 0)
_p->decrementRefCount ();
}
}
~RefCountPointer ()
{
}
T *_p;
};
class Item:public ReferenceCounted
{
public:
typedef RefCountPointer < const Item > Ptr;
};
class AnyAtomicType:public Item
{
};
class StaticContext
{
};
class DynamicContext:public StaticContext
{
};
class SortableItem
{
SortableItem ();
int m_bAscending:1;
DynamicContext *m_context;
AnyAtomicType::Ptr m_item;
};
SortableItem::SortableItem ()
{
m_context = __null;
m_item = __null;
}