* config/aarch64/aarch64.md (<su_optab>mulditi3): New expander. --- gcc/config/aarch64/aarch64.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md index c4acdfc..0b3943d 100644 --- a/gcc/config/aarch64/aarch64.md +++ b/gcc/config/aarch64/aarch64.md @@ -2078,6 +2078,23 @@ [(set_attr "type" "<su>mull")] ) +(define_expand "<su_optab>mulditi3" + [(set (match_operand:TI 0 "register_operand") + (mult:TI (ANY_EXTEND:TI (match_operand:DI 1 "register_operand")) + (ANY_EXTEND:TI (match_operand:DI 2 "register_operand"))))] + "" +{ + rtx low = gen_reg_rtx (DImode); + emit_insn (gen_muldi3 (low, operands[1], operands[2])); + + rtx high = gen_reg_rtx (DImode); + emit_insn (gen_<su>muldi3_highpart (high, operands[1], operands[2])); + + emit_move_insn (gen_lowpart (DImode, operands[0]), low); + emit_move_insn (gen_highpart (DImode, operands[0]), high); + DONE; +}) + (define_insn "<su>muldi3_highpart" [(set (match_operand:DI 0 "register_operand" "=r") (truncate:DI -- 1.8.4.2