http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32746
is really caused by a combination of two things First is_gimple_min_invariant in try_to_simplify where it chooses DECL_INITIAL should be valid_gimple_expression_p instead. However, even if i fix this, the testcase still fails because valid_gimple_expression says something that is clearly invalid is valid. (gdb) p valid_gimple_expression_p ($2) $3 = 1 '\001' (gdb) p debug_generic_stmt ($2) &((struct RegisterLayout *) (char *) &SimulatedRegisters)->intmask; This is not valid gimple by a longshot :) If you fix this part, i'll happily fix the bug report with the first part.
