http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52530
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2012-03-09
Resolution|FIXED |
Ever Confirmed|0 |1
--- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2012-03-09 14:55:18
UTC ---
However, there is a problem with Pmode != DImode. Consider following test:
struct foo
{
int *f;
int i;
};
void
__attribute__ ((noinline))
bar (struct foo x)
{
*(x.f) = 1;
}
This will compile with -mx32 to:
bar:
movl $1, (%rdi)
ret
which is wrong.
The move is:
#(insn:TI 6 3 13 2 (set (mem:SI (reg:SI 5 di [orig:60 x ] [60]) [4 *D.1704_1+0
S4 A32])
# (const_int 1 [0x1])) ptr.c:11 64 {*movsi_internal}
# (expr_list:REG_DEAD (reg:SI 5 di [orig:60 x ] [60])
# (nil)))
movl $1, (%rdi) # 6 *movsi_internal/2 [length = 6]
So we want to output address in SImode, while avoiding addr32 prefixes for
LEAs.
The patch from H.J. should be applied and LEAs should be fixed.
