Re: [PATCH] RISC-V: Add duplicate vector support.

[Jeff Law <jeffreyalaw@gmail.com>]

On 11/25/22 09:06, juzhe.zhong@rivai.ai wrote:
> From: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
>
> gcc/ChangeLog:
>
>          * config/riscv/constraints.md (Wdm): New constraint.
>          * config/riscv/predicates.md (direct_broadcast_operand): New predicate.
>          * config/riscv/riscv-protos.h (RVV_VLMAX): New macro.
>          (emit_pred_op): Refine function.
>          * config/riscv/riscv-selftests.cc (run_const_vector_selftests): New function.
>          (run_broadcast_selftests): Ditto.
>          (BROADCAST_TEST): New tests.
>          (riscv_run_selftests): More tests.
>          * config/riscv/riscv-v.cc (emit_pred_move): Refine function.
>          (emit_vlmax_vsetvl): Ditto.
>          (emit_pred_op): Ditto.
>          (expand_const_vector): New function.
>          (legitimize_move): Add constant vector support.
>          * config/riscv/riscv.cc (riscv_print_operand): New asm print rule for const vector.
>          * config/riscv/riscv.h (X0_REGNUM): New macro.
>          * config/riscv/vector-iterators.md: New attribute.
>          * config/riscv/vector.md (vec_duplicate<mode>): New pattern.
>          (@pred_broadcast<mode>): New pattern.
>
> gcc/testsuite/ChangeLog:
>
>          * gcc.target/riscv/rvv/base/dup-1.c: New test.
>          * gcc.target/riscv/rvv/base/dup-2.c: New test.

I think this should wait for the next stage1 cycle.

jeff