https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110846
Bug ID: 110846
Summary: Noinline attribute on a destructor only honored when
on the member function declaration, does not wok on
definition
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jamborm at gcc dot gnu.org
Target Milestone: ---
When noinline attribute on a destructor, it is honored:
---------- works.C ----------
void f ();
struct test
{
test() {}
[[gnu::noinline]]
~test() { f (); }
};
void
g ()
{
test t;
}
-----------------------------
g++ -O3 -S works.C -fdump-tree-optimized
tail -15 works.C.257t.optimized
;; Function g (_Z1gv, funcdef_no=6, decl_uid=2810, cgraph_uid=7,
symbol_order=6)
void g ()
{
struct test t;
<bb 2> [local count: 1073741824]:
test::~test (&t);
t ={v} {CLOBBER(eol)};
return;
}
But when it is just on the definition, it is not.
---------- doesnot.C ----------
void f ();
struct test
{
test() {}
~test();
};
[[gnu::noinline]]
test::~test()
{
f();
}
void
g ()
{
test t;
}
-------------------------------
~/gcc/trunk/inst/bin/g++ -O3 -S doesnot.C -fdump-tree-optimized
cat doesnot.C.257t.optimized
;; Function test::~test (_ZN4testD2Ev, funcdef_no=4, decl_uid=2799,
cgraph_uid=5, symbol_order=4)
__attribute__((noinline))
void test::~test (struct test * const this)
{
<bb 2> [local count: 1073741824]:
f ();
return;
}
;; Function g (_Z1gv, funcdef_no=6, decl_uid=2814, cgraph_uid=7,
symbol_order=6)
void g ()
{
<bb 2> [local count: 1073741824]:
f ();
return;
}
(Note that the attribute is present in the dump.)
