Hello All,
Am using a cross compiler with libstdc++ support.
With -O1 and above optimization, wrong instruction generated, which
cause the stack corrupted. Appropriate your advise/suggestion.
[with -O0 correct code generated].
sample code is:
===
#include <locale>
namespace std
{
....
ctype<wchar_t>::ctype(size_t __refs)
: __ctype_abstract_base<wchar_t>(__refs)
{ _M_initialize_ctype(); }
...
} // namespace std
=====
Compiler generated code (note: argument-1 passed using "r3,r2" register pair,
which is corrupt using "stord sp, 32(sp) instead of stord (r3,r2), 32(sp)).
===============
.type __ZNSt5ctypeIwEC1Em, @function
__ZNSt5ctypeIwEC1Em:
push $2, r13, ra
push $7, r7
addd $-44, (sp)
stord (r5,r4), 36(sp)
....
stord (r1,r0), 20(sp)
stord (sp), 24(sp)
movd $.L13, (r1,r0)
stord (r1,r0), 28(sp)
stord (sp), 32(sp) /* WRONG: instead of (r3,r2) its storing sp */
movd (sp), (r3,r2)
......
loadd 32(sp), (r3,r2) /*use here */
stord (r1,r0), 4(r3,r2)
....
===========
