Committed.
On Thu, 02 Nov 2017 09:03:19 PDT (-0700), Palmer Dabbelt wrote:
> From: Kito Cheng <kito.ch...@gmail.com>
>
> GCC may generate non-legitimate address due to we allow some
> load/store with non-legitimate address in pic.md.
>
> gcc/ChangeLog
>
> 2017-11-02 Kito Cheng <kito.ch...@gmail.com>
>
> * config/riscv/riscv.c (riscv_legitimize_move): Handle
> non-legitimate address.
> ---
> gcc/config/riscv/riscv.c | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c
> index c34468e018d6..b81a2d29fbfd 100644
> --- a/gcc/config/riscv/riscv.c
> +++ b/gcc/config/riscv/riscv.c
> @@ -1332,6 +1332,22 @@ riscv_legitimize_move (machine_mode mode, rtx dest,
> rtx src)
> return true;
> }
>
> + /* RISC-V GCC may generate non-legitimate address due to we provide some
> + pattern for optimize access PIC local symbol and it's make GCC generate
> + unrecognizable instruction during optmizing. */
> +
> + if (MEM_P (dest) && !riscv_legitimate_address_p (mode, XEXP (dest, 0),
> + reload_completed))
> + {
> + XEXP (dest, 0) = riscv_force_address (XEXP (dest, 0), mode);
> + }
> +
> + if (MEM_P (src) && !riscv_legitimate_address_p (mode, XEXP (src, 0),
> + reload_completed))
> + {
> + XEXP (src, 0) = riscv_force_address (XEXP (src, 0), mode);
> + }
> +
> return false;
> }
