https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106407
Bug ID: 106407
Summary: [13 Regression] ICE: in copy_to_mode_reg, at
explow.cc:652 with -O2 -fno-dce -fno-tree-dce
-fno-tree-dse
Product: gcc
Version: 13.0
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: x86_64-pc-linux-gnu
Created attachment 53335
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53335&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 -fno-dce -fno-tree-dce -fno-tree-dse testcase.c
-Wno-psabi
during RTL pass: dse1
testcase.c: In function 'bar0':
testcase.c:25:1: internal compiler error: in copy_to_mode_reg, at explow.cc:652
25 | }
| ^
0x6ceedf copy_to_mode_reg(machine_mode, rtx_def*)
/repo/gcc-trunk/gcc/explow.cc:652
0x2398123 replace_read
/repo/gcc-trunk/gcc/dse.cc:2020
0x239d310 check_mem_read_rtx
/repo/gcc-trunk/gcc/dse.cc:2296
0x239d310 check_mem_read_use
/repo/gcc-trunk/gcc/dse.cc:2401
0x134ee64 note_uses(rtx_def**, void (*)(rtx_def**, void*), void*)
/repo/gcc-trunk/gcc/rtlanal.cc:2065
0x239a37a scan_insn
/repo/gcc-trunk/gcc/dse.cc:2510
0x239a37a dse_step1
/repo/gcc-trunk/gcc/dse.cc:2775
0x239a37a rest_of_handle_dse
/repo/gcc-trunk/gcc/dse.cc:3692
0x239a37a execute
/repo/gcc-trunk/gcc/dse.cc:3765
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.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r13-1793-20220722093343-g3c4af0f0549-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/13.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r13-1793-20220722093343-g3c4af0f0549-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.0 20220722 (experimental) (GCC)
