https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111720
--- Comment #19 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
(In reply to Richard Biener from comment #18)
> With RVV you have intrinsic calls in GIMPLE so nothing to optimize:
>
> vbool8_t fn ()
> {
> vbool8_t vmask;
> vuint8m1_t vand_m;
> vuint8m1_t varr;
> uint8_t arr[32];
>
> <bb 2> [local count: 1073741824]:
> arr =
> "\x01\x02\x07\x01\x03\x04\x05\x03\x01\x00\x01\x02\x04\x04\t\t\x01\x02\x07\x01
> \x03\x04\x05\x03\x01\x00\x01\x02\x04\x04\t\t";
> varr_3 = __riscv_vle8_v_u8m1 (&arr, 32); [return slot optimization]
> vand_m_4 = __riscv_vand_vx_u8m1 (varr_3, 1, 32); [return slot optimization]
> vmask_5 = __riscv_vreinterpret_v_u8m1_b8 (vand_m_4); [return slot
> optimization]
> <retval> = vmask_5;
> arr ={v} {CLOBBER(eol)};
> return <retval>;
>
> and on RTL I see lots of UNSPECs, RTL opts cannot do anything with those.
>
> This is what Andrew said already.
Ok. I wonder why this issue is gone when I change it into:
arr as static
https://godbolt.org/z/Tdoshdfr6
