https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114714
--- Comment #4 from Li Pan <pan2.li at intel dot com> ---
(In reply to Kito Cheng from comment #3)
> Reduced case, not the final result, but it already run 8+ hours...
> ```
> typedef int a;
> typedef short b;
> typedef unsigned c;
> template < typename > using e = unsigned;
> template < typename > void ab();
> #pragma riscv intrinsic "vector"
> template < typename f, int, int ac > struct g {
> using i = f;
> template < typename m > using j = g< m, 0, ac >;
> using k = g< i, 1, ac - 1 >;
> using ad = g< i, 1, ac + 1 >;
> };
> namespace ae {
> struct af {
> using h = g< short, 6, 0 < 3 >;
> };
> struct ag {
> using h = af::h;
> };
> } template < typename, int > using ah = ae::ag::h;
> template < class ai > using aj = typename ai::i;
> template < class i, class ai > using j = typename ai::j< i >;
> template < class ai > using ak = j< e< ai >, ai >;
> template < class ai > using k = typename ai::k;
> template < class ai > using ad = typename ai::ad;
> template < a ap > vuint16m1_t ar(g< b, ap, 0 >, b);
> template < a ap > vuint16m2_t ar(g< b, ap, 1 >, b);
> template < a ap > vuint32m2_t ar(g< c, ap, 1 >, c);
> template < a ap > vuint32m4_t ar(g< c, ap, 2 >, c);
> template < class ai > using as = decltype(ar(ai(), aj< ai >()));
> template < class ai > as< ai > at(ai);
> namespace ae {
> template < int ap > vuint32m4_t au(g< c, ap, 1 + 1 >, vuint32m2_t l) {
> return __riscv_vlmul_ext_v_u32m2_u32m4(l);
> }
> } template < int ap > vuint32m2_t aw(g< c, ap, 1 >, vuint16m1_t l) {
> return __riscv_vzext_vf2_u32m2(l, 0);
> }
> namespace ae {
> vuint32m4_t ax(vuint32m4_t, vuint32m4_t, a);
> }
> template < class ay, class an > as< ay > az(ay ba, an bc) {
> an bb;
> return ae::ax(ae::au(ba, bc), ae::au(ba, bb), 2);
> }
> template < class bd > as< bd > be(bd, as< ad< bd > >);
> namespace ae {
> template < class bh, class bi > void bj(bh bk, bi bl) {
> ad< decltype(bk) > bn;
> az(bn, bl);
> }
> } template < int ap, int ac, class bp, class bq >
> void br(g< c, ap, ac > bk, bp, bq bl) {
> ae::bj(bk, bl);
> }
> template < class ai > using bs = decltype(at(ai()));
> struct bt;
> template < int ac = 1 > class bu {
> public:
> template < typename i > void operator()(i) {
> ah< i, ac > d;
> bt()(i(), d);
> }
> };
> struct bt {
> template < typename bv, class bf > void operator()(bv, bf bw) {
> using bx = bv;
> ak< bf > by;
> k< bf > bz;
> using bq = bs< decltype(by) >;
> using bp = bs< decltype(bw) >;
> bp cb;
> ab< bx >();
> for (;;) {
> bp cc;
> bq bl = aw(by, be(bz, cc));
> br(by, cb, bl);
> }
> }
> };
> void d() { bu()(b()); }
>
> ```
Thanks Kito, really save my day!