committed, thanks. On Tue, Jan 10, 2023 at 6:40 AM <juzhe.zh...@rivai.ai> wrote:
> From: Ju-Zhe Zhong <juzhe.zh...@rivai.ai> > > gcc/ChangeLog: > > * config/riscv/riscv-vsetvl.cc > (pass_vsetvl::forward_demand_fusion): Add pre-check for redundant flow. > > --- > gcc/config/riscv/riscv-vsetvl.cc | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/gcc/config/riscv/riscv-vsetvl.cc > b/gcc/config/riscv/riscv-vsetvl.cc > index 7800c2ee509..18c6f437db6 100644 > --- a/gcc/config/riscv/riscv-vsetvl.cc > +++ b/gcc/config/riscv/riscv-vsetvl.cc > @@ -2140,6 +2140,9 @@ pass_vsetvl::forward_demand_fusion (void) > if (!prop.valid_or_dirty_p ()) > continue; > > + if (cfg_bb == ENTRY_BLOCK_PTR_FOR_FN (cfun)) > + continue; > + > edge e; > edge_iterator ei; > /* Forward propagate to each successor. */ > @@ -2153,6 +2156,11 @@ pass_vsetvl::forward_demand_fusion (void) > /* It's quite obvious, we don't need to propagate itself. */ > if (e->dest->index == cfg_bb->index) > continue; > + /* We don't propagate through critical edges. */ > + if (e->flags & EDGE_COMPLEX) > + continue; > + if (e->dest->index == EXIT_BLOCK_PTR_FOR_FN (cfun)->index) > + continue; > > /* If there is nothing to propagate, just skip it. */ > if (!local_dem.valid_or_dirty_p ()) > -- > 2.36.1 > >
