Oh, I guess I didn't expand enough about my thought:
I don't care that we have bad performance/bad code gen here if Zvfh is
mandatory for RVA23 since that means not many people and core will
fall into this code gen path.
But RVA23 will go to this code gen patch, which means we will go this
path fo
On Thu, Jul 10, 2025 at 5:31 PM Robin Dapp wrote:
>
> >> diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
> >> index 6753b01db59..866aaf1e8a0 100644
> >> --- a/gcc/config/riscv/vector.md
> >> +++ b/gcc/config/riscv/vector.md
> >> @@ -1580,8 +1580,27 @@ (define_insn_and_split "*
diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
index 6753b01db59..866aaf1e8a0 100644
--- a/gcc/config/riscv/vector.md
+++ b/gcc/config/riscv/vector.md
@@ -1580,8 +1580,27 @@ (define_insn_and_split "*vec_duplicate"
"&& 1"
[(const_int 0)]
{
-riscv_vector::emit_vlma
> diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
> index 6753b01db59..866aaf1e8a0 100644
> --- a/gcc/config/riscv/vector.md
> +++ b/gcc/config/riscv/vector.md
> @@ -1580,8 +1580,27 @@ (define_insn_and_split "*vec_duplicate"
>"&& 1"
>[(const_int 0)]
>{
> -riscv_
Hi,
This patch makes the zero-stride load broadcast idiom dependent on a
uarch-tunable "use_zero_stride_load". Right now we have quite a few
paths that reach a strided load and some of them are not exactly
straightforward.
While broadcast is relatively rare on rv64 targets it is more common on
