https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92368
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |x86_64-*-* i?86-*-* Status|UNCONFIRMED |NEW Last reconfirmed| |2019-11-05 Known to work| |4.8.5, 8.1.0 Ever confirmed|0 |1 Known to fail| |4.9.4, 7.1.0, 7.4.1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. GCC 8+ choose %eax, not sure if the constraints are valid though.