[Bug target/59968] Unused BT patterns

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59968

--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> ---
I couldn't get GCC to use those BT patterns:

(define_insn "*btsq"
  [(set (zero_extract:DI (match_operand:DI 0 "register_operand" "+r")
                         (const_int 1)
                         (match_operand:DI 1 "const_0_to_63_operand"))
        (const_int 1))
   (clobber (reg:CC FLAGS_REG))]
  "TARGET_64BIT && (TARGET_USE_BT || reload_completed)"
  "bts{q}\t{%1, %0|%0, %1}"
  [(set_attr "type" "alu1")
   (set_attr "prefix_0f" "1")
   (set_attr "mode" "DI")])

(define_insn "*btrq"
  [(set (zero_extract:DI (match_operand:DI 0 "register_operand" "+r")
                         (const_int 1)
                         (match_operand:DI 1 "const_0_to_63_operand"))
        (const_int 0))
   (clobber (reg:CC FLAGS_REG))]
  "TARGET_64BIT && (TARGET_USE_BT || reload_completed)"
  "btr{q}\t{%1, %0|%0, %1}"
  [(set_attr "type" "alu1")
   (set_attr "prefix_0f" "1")
   (set_attr "mode" "DI")])

(define_insn "*btcq"
  [(set (zero_extract:DI (match_operand:DI 0 "register_operand" "+r")
                         (const_int 1)
                         (match_operand:DI 1 "const_0_to_63_operand"))
        (not:DI (zero_extract:DI (match_dup 0) (const_int 1) (match_dup 1))))
   (clobber (reg:CC FLAGS_REG))]
  "TARGET_64BIT && (TARGET_USE_BT || reload_completed)"
  "btc{q}\t{%1, %0|%0, %1}"
  [(set_attr "type" "alu1")
   (set_attr "prefix_0f" "1")
   (set_attr "mode" "DI")])