https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94670
Bug ID: 94670
Summary: ICE in extract_insn, at recog.c:2310 on
s390x-linux-gnu with -march=z13
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at debian dot org
Target Milestone: ---
Seen on the gcc-8, gcc-9 branches and trunk, worked around with -O2.
$ cat hb-set.ii
struct f {
long operator[](int i) { return c.d[i]; }
struct {
long d[sizeof 0];
} c;
};
template <typename e> struct o {
int g;
e h;
e &operator[](int i) {
e *j;
unsigned b = i;
j = &h;
return j[b];
}
};
int k, m;
unsigned l;
struct n {
struct C {
int t() {
int p = l = sizeof(d);
for (unsigned b = 0; b < l; b++) {
long q = d[b], d = q;
k = __builtin_popcountl(d);
p += k;
}
return p;
}
f d;
};
o<C> pages;
int m_fn1() {
unsigned a = pages.g;
for (unsigned b = 0; b < a; b++)
m += pages[b].t();
return m;
}
} r;
void s() { r.m_fn1(); }
$ s390x-linux-gnu-g++ -c -mbackchain -march=z13 -mzarch -O3 -Wall
-Wno-strict-aliasing -std=gnu++98 -fno-stack-protector hb-set.ii
hb-set.ii: In function ‘void s()’:
hb-set.ii:40:23: error: unrecognizable insn:
40 | void s() { r.m_fn1(); }
| ^
(insn 109 108 110 7 (set (reg:V16QI 1302)
(unspec:V16QI [
(subreg:V16QI (subreg:V2DI (reg:V16QI 1300) 0) 0)
] UNSPEC_POPCNT)) "hb-set.ii":25:32 -1
(nil))
during RTL pass: vregs
hb-set.ii:40:23: internal compiler error: in extract_insn, at recog.c:2310
Please submit a full bug report,
with preprocessed source if appropriate.
