[Bug target/83554] [8 Regression] ICE: in ix86_mitigate_rop, at config/i386/i386.c:41274 with -mmitigate-rop

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83554

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Comment on attachment 43035
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43035
gcc8-pr83554.patch

>        (any_rotate:HI (match_dup 0) (const_int 8)))
>   (clobber (reg:CC FLAGS_REG))]
>  "reload_completed
>-  && (TARGET_USE_XCHGB || optimize_function_for_size_p (cfun))"
>+  && (TARGET_USE_XCHGB || optimize_function_for_size_p (cfun))
>+  && QI_REG_P (operands[0])"

You can use QIreg_operand as operand predicate in this pattern.