https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84811
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> --- (In reply to Zhendong Su from comment #6) > (In reply to Martin Liška from comment #5) > > > gcc version 8.0.1 20180310 (experimental) [trunk revision 258413] (GCC) > > > > Just a nit, this revision mentioned above is actually from GCC 7 branch. > > Isn't that the issue? > > Martin, it was checked out from the main trunk @ > svn://gcc.gnu.org/svn/gcc/trunk. > > I still see the ICE with rev. 258535: > > $ gcctk -v > Using built-in specs. > COLLECT_GCC=gcctk > COLLECT_LTO_WRAPPER=/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64- > pc-linux-gnu/8.0.1/lto-wrapper > 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 20180314 (experimental) [trunk revision 258535] (GCC) > $ > $ gcctk -O3 -c small.c > 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 > } > ^ > 0xc8ff8b smallest_mode_for_size(poly_int<1u, unsigned long>, mode_class) > ../../gcc-source-trunk/gcc/stor-layout.c:355 > 0x1437abc smallest_int_mode_for_size(poly_int<1u, unsigned long>) > ../../gcc-source-trunk/gcc/machmode.h:842 > 0x1437abc find_shift_sequence > ../../gcc-source-trunk/gcc/dse.c:1701 > 0x1437abc get_stored_val > ../../gcc-source-trunk/gcc/dse.c:1847 > 0x143a41c record_store > ../../gcc-source-trunk/gcc/dse.c:1557 > 0x143b2c2 scan_insn > ../../gcc-source-trunk/gcc/dse.c:2545 > 0x143c4b2 dse_step1 > ../../gcc-source-trunk/gcc/dse.c:2657 > 0x143c4b2 rest_of_handle_dse > ../../gcc-source-trunk/gcc/dse.c:3574 > 0x143c4b2 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. > $ Can you please attach content of --save-temps?
