https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84811
--- Comment #11 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Martin Liška from comment #9)
> Sorry, I meant --verbose.
$ gcctk -O3 -c --verbose small.c
Using built-in specs.
COLLECT_GCC=gcctk
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/home/su/software/tmp/gcc/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 8.0.1 20180316 (experimental) [trunk revision 258587] (GCC)
COLLECT_GCC_OPTIONS='-O3' '-c' '-v' '-mtune=generic' '-march=x86-64'
/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/cc1
-quiet -v -imultiarch x86_64-linux-gnu small.c -quiet -dumpbase small.c
-mtune=generic -march=x86-64 -auxbase small -O3 -version -o /tmp/cculQbQT.s
GNU C17 (GCC) version 8.0.1 20180316 (experimental) [trunk revision 258587]
(x86_64-pc-linux-gnu)
compiled by GNU C version 5.4.0 20160609, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/home/su/software/tmp/gcc/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/8.0.1/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/home/su/software/tmp/gcc/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/8.0.1/include
/usr/local/include
/home/su/software/tmp/gcc/gcc-trunk/include
/home/su/software/tmp/gcc/gcc-trunk/lib/gcc/x86_64-pc-linux-gnu/8.0.1/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
GNU C17 (GCC) version 8.0.1 20180316 (experimental) [trunk revision 258587]
(x86_64-pc-linux-gnu)
compiled by GNU C version 5.4.0 20160609, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: f6266f581518b6147a3db5aa3f80d40c
during RTL pass: dse1
small.c: In function ‘fn1’:
small.c:12:1: internal compiler error: in smallest_mode_for_size, at
stor-layout.c:355
}
^
0xc9009b smallest_mode_for_size(poly_int<1u, unsigned long>, mode_class)
../../gcc-source-trunk/gcc/stor-layout.c:355
0x14376fc smallest_int_mode_for_size(poly_int<1u, unsigned long>)
../../gcc-source-trunk/gcc/machmode.h:842
0x14376fc find_shift_sequence
../../gcc-source-trunk/gcc/dse.c:1701
0x14376fc get_stored_val
../../gcc-source-trunk/gcc/dse.c:1847
0x143a05c record_store
../../gcc-source-trunk/gcc/dse.c:1557
0x143af02 scan_insn
../../gcc-source-trunk/gcc/dse.c:2545
0x143c0f2 dse_step1
../../gcc-source-trunk/gcc/dse.c:2657
0x143c0f2 rest_of_handle_dse
../../gcc-source-trunk/gcc/dse.c:3574
0x143c0f2 execute
../../gcc-source-trunk/gcc/dse.c:3672
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.
$
