https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89838
--- Comment #1 from Claudiu Zissulescu <claziss at gmail dot com> --- It is confirmed also in gcc mainline branch: tst-tls1.c: In function ‘check_s’: tst-tls1.c:65:1: error: unrecognizable insn: (insn 36 35 37 6 (set (reg/f:SI 163) (plus:SI (plus:SI (reg:SI 25 r25) (reg:SI 164)) (const_int 512 [0x200]))) "tst-tls1.c":64:3 -1 (expr_list:REG_EQUAL (const:SI (plus:SI (symbol_ref:SI ("s") [flags 0x22] <var_decl 0x7f7f85da2120 s>) (const_int 512 [0x200]))) (nil))) during RTL pass: vregs