https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77959
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Andrew Pinski from comment #6) > Maybe turning on RTL checking will find the problem is located. Indeed, the rtl-checking enabled build says: internal compiler error: RTL check: expected code 'mem', have 'const_double' in get_mem_attrs, at rtl.h:3300 0xa8b327 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int, char const*) ../../git/gcc/gcc/rtl.c:811 0x8345d8 get_mem_attrs ../../git/gcc/gcc/rtl.h:3300 0x83038b get_mem_attrs ../../git/gcc/gcc/expr.c:6950 0x83038b store_field ../../git/gcc/gcc/expr.c:6778 0x82d2e3 expand_assignment(tree_node*, tree_node*, bool) ../../git/gcc/gcc/expr.c:5167 0x7253bd expand_gimple_stmt_1 ../../git/gcc/gcc/cfgexpand.c:3649 0x7253bd expand_gimple_stmt ../../git/gcc/gcc/cfgexpand.c:3745