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calls.c (precompute_arguments): Do not assume that temporaries can be destroyed after expanding the argument.

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* calls.c (precompute_arguments): Do not assume that temporaries
	can be destroyed after expanding the argument.
	(expand_call): Likewise.

From-SVN: r51011
This commit is contained in:
Mark Mitchell 2002-03-18 22:25:50 +00:00 committed by Mark Mitchell
parent 9d5e46be34
commit 1929c971b9
3 changed files with 80 additions and 11 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2002-03-18 Mark Mitchell <mark@codesourcery.com>
* calls.c (precompute_arguments): Do not assume that temporaries
can be destroyed after expanding the argument.
(expand_call): Likewise.
2002-03-15 Eric Christopher <echristo@redhat.com>
* config/mips/mips.md (movdf_internal2): Add two new move constraints.

11
gcc/calls.c
View File

@ -1511,14 +1511,9 @@ precompute_arguments (flags, num_actuals, args)
if (TREE_ADDRESSABLE (TREE_TYPE (args[i].tree_value)))
abort ();
push_temp_slots ();
args[i].value
= expand_expr (args[i].tree_value, NULL_RTX, VOIDmode, 0);
preserve_temp_slots (args[i].value);
pop_temp_slots ();
/* ANSI doesn't require a sequence point here,
but PCC has one, so this will avoid some problems. */
emit_queue ();
@ -2681,10 +2676,6 @@ expand_call (exp, target, ignore)
if (pass && (flags & ECF_LIBCALL_BLOCK))
NO_DEFER_POP;
/* Push the temporary stack slot level so that we can free any
temporaries we make. */
push_temp_slots ();
#ifdef FINAL_REG_PARM_STACK_SPACE
reg_parm_stack_space = FINAL_REG_PARM_STACK_SPACE (args_size.constant,
args_size.var);
@ -3334,8 +3325,6 @@ expand_call (exp, target, ignore)
if ((flags & ECF_MAY_BE_ALLOCA) && nonlocal_goto_handler_slots != 0)
emit_stack_save (SAVE_NONLOCAL, &nonlocal_goto_stack_level, NULL_RTX);
pop_temp_slots ();
/* Free up storage we no longer need. */
for (i = 0; i < num_actuals; ++i)
if (args[i].aligned_regs)

74
gcc/testsuite/g++.dg/opt/alias2.C Normal file
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@ -0,0 +1,74 @@
// { dg-do run }
// { dg-options "-O2" }
extern "C" int printf (...);
struct _Deque_iterator {
int _M_cur;
int x[2];
int* _M_node;
_Deque_iterator() : _M_cur(0), _M_node(0) {}
_Deque_iterator(const _Deque_iterator& __x)
: _M_cur(__x._M_cur),
_M_node(__x._M_node) {}
};
class _Deque_base
{
public:
int yy;
_Deque_base()
: _M_start()
{ _M_initialize_map(); }
~_Deque_base();
void _M_initialize_map();
_Deque_iterator _M_start;
};
_Deque_base::~_Deque_base() {
printf ("bb %x %x\n", this, *_M_start._M_node);
}
void
_Deque_base::_M_initialize_map()
{
yy = 0x123;
printf ("aa %x %x\n", this, yy);
_M_start._M_node = &yy;
_M_start._M_cur = yy;
}
class deque : protected _Deque_base
{
public:
deque () {}
deque(const deque& __x) {}
~deque() {
_Deque_iterator i = _M_start;
}
};
class GeometryAddress {
public:
GeometryAddress(deque addressStack) {}
};
void yyy (const GeometryAddress& gb)
{
}
deque temp1;
int main()
{
yyy (GeometryAddress (temp1));
return 0;
}