https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89528
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
Component|debug |rtl-optimization
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed, this goes wrong on the RTL side somehow.
Breakpoint 2, n () at t.c:13
13 optimize_me_not();
(gdb) disassemble
Dump of assembler code for function n:
0x00000000004005ce <+0>: push %rbx
=> 0x00000000004005cf <+1>: mov $0x0,%eax
0x00000000004005d4 <+6>: callq 0x4005cd <optimize_me_not>
while we expand from
<bb 2> [local count: 1073741824]:
# DEBUG BEGIN_STMT
_1 = j (1);
l_1127_8 = _1 ^ -65536;
# DEBUG l_1127 => l_1127_8
# DEBUG BEGIN_STMT
optimize_me_not ();
not sure how RTL DCE got rid of the call..
