https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97866
--- Comment #2 from Ilya Leoshkevich <iii at linux dot ibm.com> ---
Never mind, I managed to reproduce it now:
ubuntu-focal-amd64$ git rev-parse --short HEAD
77f67db2a47
ubuntu-focal-amd64$ ../configure --target=s390x-linux-gnu --exec-prefix=/usr
--disable-bootstrap --disable-multilib --enable-languages=c,c++
ubuntu-focal-amd64$ cat test.cpp
typedef long a;
typedef void (*b)(a, a, void *);
class c {
unsigned char *m_fn1();
char d(a);
a e(a);
void f();
};
b g;
void *h;
void c::f() {
for (a j; j < 6; j++) {
unsigned char *flags = m_fn1();
for (a i, k; i < k; i++) {
if (flags)
continue;
int *ff = reinterpret_cast<int *>(d(i));
g(a(ff), e(j), h);
}
}
}
ubuntu-focal-amd64$ gcc/xgcc -Bgcc -std=gnu++14 -O2 -c test.cpp
during RTL pass: reload
test.cpp: In member function ‘void c::f()’:
test.cpp:21:1: internal compiler error: in get_insn_freq, at lra.c:1554
