On 6/30/24 00:41, Xi Ruoyao wrote:
> On Fri, 2024-06-28 at 17:53 -0700, Vineet Gupta wrote:
>> + UNSPEC_ISFINITE
>> + UNSPEC_ISNORMAL
> You don't really need them. The RTL pattern of define_expand has no use
> when you expand it via C code and DONE.
>
> i.e. you can just code
>
> (define_expand "isfinite<ANYF:mode>2"
> [(match_operand:SI 0 "register_operand" "=r")
> (match_operand:ANYF 1 "register_operand" " f")]
> "TARGET_HARD_FLOAT"
> {
> rtx tmp = gen_reg_rtx (SImode);
> emit_insn (gen_fclass<ANYF:mode> (tmp, operands[1]));
> riscv_emit_binary (AND, tmp, tmp, GEN_INT (0x7e));
> rtx cmp = gen_rtx_NE (SImode, tmp, const0_rtx);
> emit_insn (gen_cstoresi4 (operands[0], cmp, tmp, const0_rtx));
>
> DONE;
> })
>
> and remove the necessity of UNSPEC_ISFINITE.
Thx. Removed the UNPSEC in v2.
