https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111486
Bug ID: 111486
Summary: [14 Regression] ICE: in require, at machmode.h:313
with -O2 -march=rv64iv
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: riscv64-unknown-linux-gnu
Created attachment 55940
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55940&action=edit
reduced testcase
Compiler output:
$ riscv64-unknown-linux-gnu-gcc -O2 -march=rv64iv testcase.c
during RTL pass: reload
testcase.c: In function 'foo':
testcase.c:8:1: internal compiler error: in require, at machmode.h:313
8 | }
| ^
0xa40cd2 opt_mode<machine_mode>::require() const
/repo/gcc-trunk/gcc/machmode.h:313
0xa47091 opt_mode<machine_mode>::require() const
/repo/gcc-trunk/gcc/config/riscv/riscv.cc:2546
0xa47091 riscv_legitimize_move(machine_mode, rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/riscv/riscv.cc:2543
0x1f1df10 gen_movdi(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/config/riscv/riscv.md:2024
0x10f1423 rtx_insn* insn_gen_fn::operator()<rtx_def*, rtx_def*>(rtx_def*,
rtx_def*) const
/repo/gcc-trunk/gcc/recog.h:411
0x10f1423 emit_move_insn_1(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/expr.cc:4164
0x10f183d emit_move_insn(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/expr.cc:4334
0x13070ec lra_emit_move(rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/lra.cc:509
0x132295b curr_insn_transform
/repo/gcc-trunk/gcc/lra-constraints.cc:4748
0x1324335 lra_constraints(bool)
/repo/gcc-trunk/gcc/lra-constraints.cc:5488
0x130a3d4 lra(_IO_FILE*)
/repo/gcc-trunk/gcc/lra.cc:2419
0x12bb629 do_reload
/repo/gcc-trunk/gcc/ira.cc:5970
0x12bb629 execute
/repo/gcc-trunk/gcc/ira.cc:6156
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ riscv64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-riscv64/bin/riscv64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-4143-20230919174842-gd2f53a601a2-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/14.0.0/lto-wrapper
Target: riscv64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-isa-spec=2.2
--with-sysroot=/usr/riscv64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=riscv64-unknown-linux-gnu
--with-ld=/usr/bin/riscv64-unknown-linux-gnu-ld
--with-as=/usr/bin/riscv64-unknown-linux-gnu-as --disable-multilib
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-4143-20230919174842-gd2f53a601a2-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20230919 (experimental) (GCC)
