https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96759
Bug ID: 96759
Summary: ICE in extract_insn, at recog.c:2294
Product: gcc
Version: 10.0
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: kito at gcc dot gnu.org, wilson at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-linux-gnu
Target: riscv64-linux-gnu
The following fails:
$ cat live.cpp
struct S {
int a;
double b;
};
S GetNumbers();
auto [globalC, globalD] = GetNumbers();
$ riscv64-linux-gnu-gcc live.cpp -mno-strict-align
live.cpp: In function ‘void __static_initialization_and_destruction_0(int,
int)’:
live.cpp:6:39: error: unrecognizable insn:
6 | auto [globalC, globalD] = GetNumbers();
| ^
(insn 27 29 28 5 (set (subreg:DI (reg:TI 87) 0)
(subreg:DI (parallel:TI [
(expr_list:REG_DEP_TRUE (reg:SI 83)
(const_int 0 [0]))
(expr_list:REG_DEP_TRUE (reg:DF 84)
(const_int 8 [0x8]))
]) 0)) "live.cpp":6:38 -1
(nil))
during RTL pass: vregs
live.cpp:6:39: internal compiler error: in extract_insn, at recog.c:2294
0x5e1f55 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-riscv64/build/gcc/rtl-error.c:108
0x5e1f71 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-riscv64/build/gcc/rtl-error.c:116
0x5e143a extract_insn(rtx_insn*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-riscv64/build/gcc/recog.c:2294
0x970a6f instantiate_virtual_regs_in_insn
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-riscv64/build/gcc/function.c:1607
0x970a6f instantiate_virtual_regs
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-riscv64/build/gcc/function.c:1977
0x970a6f execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-riscv64/build/gcc/function.c:2026
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.
