Hi,
From i386.md, alternative 1 of *fop_sf_comm_mixed is duplicated with
*fop_sf_comm_sse. Why do we define a _mixed pattern here?
(define_insn "*fop_sf_comm_mixed"
[(set (match_operand:SF 0 "register_operand" "=f,x")
(match_operator:SF 3 "binary_fp_operator"
[(match_operand:SF 1 "nonimmediate_operand"
"%0,0")
(match_operand:SF 2 "nonimmediate_operand"
"fm,xm")]))]
"TARGET_MIX_SSE_I387
&& COMMUTATIVE_ARITH_P (operands[3])
&& !(MEM_P (operands[1]) && MEM_P (operands[2]))"
"* return output_387_binary_op (insn, operands);"
[(set (attr "type")
(if_then_else (eq_attr "alternative" "1")
(if_then_else (match_operand:SF 3 "mult_operator" "")
(const_string "ssemul")
(const_string "sseadd"))
(if_then_else (match_operand:SF 3 "mult_operator" "")
(const_string "fmul")
(const_string "fop"))))
(set_attr "mode" "SF")])
(define_insn "*fop_sf_comm_sse"
[(set (match_operand:SF 0 "register_operand" "=x")
(match_operator:SF 3 "binary_fp_operator"
[(match_operand:SF 1 "nonimmediate_operand"
"%0")
(match_operand:SF 2 "nonimmediate_operand"
"xm")]))]
"TARGET_SSE_MATH
&& COMMUTATIVE_ARITH_P (operands[3])
&& !(MEM_P (operands[1]) && MEM_P (operands[2]))"
"* return output_387_binary_op (insn, operands);"
[(set (attr "type")
(if_then_else (match_operand:SF 3 "mult_operator" "")
(const_string "ssemul")
(const_string "sseadd")))
(set_attr "mode" "SF")])
Thanks - Joey
