https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99949
Bug ID: 99949
Summary: ICE in setup_reg_classes, at reginfo.c:956
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: krebbel at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-linux-gnu
Target: s390x-linux-gnu
The following fails, likely 11 regression:
$ cat z990.C
struct S {
int e;
char f[1024];
} g[8];
S foo(int, int, int, S, int, int);
int bar_a;
void bar(int b, int c, S d, int e, int f) {
#define A(N)
\
g[N] = foo(bar_a, b, c, d, e, f);
\
g[67] = foo(bar_a, b, c, d, e, f);
A(48)
}
$ s390x-linux-gnu-gcc z990.C -c --param=max-cse-insns=100 -march=z990 -O1
during RTL pass: reload
z990.C: In function ‘void bar(int, int, S, int, int)’:
z990.C:12:1: internal compiler error: in setup_reg_classes, at reginfo.c:956
12 | }
| ^
0x5eaa8d setup_reg_classes(int, reg_class, reg_class, reg_class)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/reginfo.c:956
0xb1cfae lra_change_class
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/lra-int.h:433
0xb1cfae curr_insn_transform
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/lra-constraints.c:4407
0xb1e3c5 lra_constraints(bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/lra-constraints.c:5169
0xb0cc42 lra(_IO_FILE*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/lra.c:2336
0xacb299 do_reload
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/ira.c:5835
0xacb299 execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/ira.c:6021
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
