[Bug rtl-optimization/117770] FAIL: g++.dg/torture/pr37922.C -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions execution test

[danglin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117770

--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
I suspect explicitly setting hard registers prior to reload confuses
LRA:

;;; Division and mod.
(define_expand "divsi3"
  [(set (reg:SI 26) (match_operand:SI 1 "move_src_operand" ""))
   (set (reg:SI 25) (match_operand:SI 2 "move_src_operand" ""))
   (parallel [(set (reg:SI 29) (div:SI (reg:SI 26) (reg:SI 25)))
              (clobber (match_dup 3))
              (clobber (match_dup 4))
              (clobber (reg:SI 26))
              (clobber (reg:SI 25))
              (clobber (match_dup 5))])
   (set (match_operand:SI 0 "move_dest_operand" "") (reg:SI 29))]