https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97322
Bug ID: 97322 Summary: [11 regression] ICE in int_mode_for_mode, at stor-layout.c:404 on arm Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: clyon at gcc dot gnu.org Target Milestone: --- Created attachment 49322 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49322&action=edit preprocessed strtof_l.i Since r11-3671 (g:bf510679bb3f9bfd6019666065016bb26a5b5466), I've noticed an ICE while building the toolchains for arm. GCC crashes either while building glibc or newlib. I'm attaching a glibc reproducer: strtof_l.i arm-none-linux-gnueabihf-gcc strtof_l.i -O2 during RTL pass: expand In file included from strtof_l.c:45: strtod_l.c: In function '____strtof_l_internal': strtod_l.c:506:1: internal compiler error: in int_mode_for_mode, at stor-layout.c:404 506 | ____STRTOF_INTERNAL (const STRING_TYPE *nptr, STRING_TYPE **endptr, int group, | ^~~~~~~~~~~~~~~~~~~~~ 0xcf0afb int_mode_for_mode(machine_mode) /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/stor-layout.c:404 0x92e70e emit_move_via_integer /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/expr.c:3425 0x93e4fc emit_move_insn_1(rtx_def*, rtx_def*) /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/expr.c:3793 0x93e82b emit_move_insn(rtx_def*, rtx_def*) /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/expr.c:3935 0x7dc96f emit_library_call_value_1(int, rtx_def*, rtx_def*, libcall_type, machine_mode, int, std::pair<rtx_def*, machine_mode>*) /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/calls.c:5601 0x10d2f34 emit_library_call_value(rtx_def*, rtx_def*, libcall_type, machine_mode, rtx_def*, machine_mode, rtx_def*, machine_mode) /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/rtl.h:4258 0x10d2f34 arm_expand_divmod_libfunc /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/config/arm/arm.c:33280 0xa54846 expand_DIVMOD /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/internal-fn.c:3084 0x800fa7 expand_call_stmt /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/cfgexpand.c:2612 0x800fa7 expand_gimple_stmt_1 /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/cfgexpand.c:3686 0x800fa7 expand_gimple_stmt /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/cfgexpand.c:3851 0x80771b expand_gimple_basic_block /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/cfgexpand.c:5892 0x809e0b execute /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/cfgexpand.c:6576