On Mon, Jun 5, 2023 at 9:52 PM Dimitar Dimitrov <dimi...@dinux.eu> wrote:
>
> During libgcc configure stage for riscv32-none-elf, when
> "--enable-checking=yes,rtl" has been activated, the following error
> is observed:
>
>   configure:3814: 
> /home/dinux/projects/pru/local-workspace/riscv32-gcc-build/./gcc/xgcc 
> -B/home/dinux/projects/pru/local-workspace/riscv32-gcc-build/./gcc/ 
> -B/mnt/nvme/dinux/local-workspace/riscv32-opt/riscv32-none-elf/bin/ 
> -B/mnt/nvme/dinux/local-workspace/riscv32-opt/riscv32-none-elf/lib/ -isystem 
> /mnt/nvme/dinux/local-workspace/riscv32-opt/riscv32-none-elf/include -isystem 
> /mnt/nvme/dinux/local-workspace/riscv32-opt/riscv32-none-elf/sys-include    
> -c -g -O2  conftest.c >&5
>   during RTL pass: final
>   conftest.c: In function 'main':
>   conftest.c:16:1: internal compiler error: RTL check: expected code 
> 'const_int', have 'reg' in riscv_print_operand, at config/riscv/riscv.cc:4462

Note this is recorded as https://gcc.gnu.org/PR109725 .

Thanks,
Andrew Pinski

>      16 | }
>         | ^
>   0x843c4d rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int, 
> char const*)
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/rtl.cc:916
>   0x8ea823 riscv_print_operand
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/config/riscv/riscv.cc:4462
>   0xde84b5 output_operand(rtx_def*, int)
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:3632
>   0xde8ef8 output_asm_insn(char const*, rtx_def**)
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:3544
>   0xded33b output_asm_insn(char const*, rtx_def**)
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:3421
>   0xded33b final_scan_insn_1
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:2841
>   0xded6cb final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:2887
>   0xded8b7 final_1
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:1979
>   0xdee518 rest_of_handle_final
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:4240
>   0xdee518 execute
>           /mnt/nvme/dinux/local-workspace/gcc/gcc/final.cc:4318
>
> Fix by moving the calculation of memmodel to the cases where it is used.
>
> Regression tested for riscv32-none-elf. No changes in gcc.sum and
> g++.sum.  I don't have setup to test riscv64.
>
> gcc/ChangeLog:
>
>         * config/riscv/riscv.cc (riscv_print_operand): Calculate
>         memmodel only when it is valid.
>
> Signed-off-by: Dimitar Dimitrov <dimi...@dinux.eu>
> ---
>  gcc/config/riscv/riscv.cc | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
> index c15da1d0e30..fa4bc3e1f7e 100644
> --- a/gcc/config/riscv/riscv.cc
> +++ b/gcc/config/riscv/riscv.cc
> @@ -4459,7 +4459,6 @@ riscv_print_operand (FILE *file, rtx op, int letter)
>      }
>    machine_mode mode = GET_MODE (op);
>    enum rtx_code code = GET_CODE (op);
> -  const enum memmodel model = memmodel_base (INTVAL (op));
>
>    switch (letter)
>      {
> @@ -4596,7 +4595,8 @@ riscv_print_operand (FILE *file, rtx op, int letter)
>        fputs (GET_RTX_NAME (code), file);
>        break;
>
> -    case 'A':
> +    case 'A': {
> +      const enum memmodel model = memmodel_base (INTVAL (op));
>        if (riscv_memmodel_needs_amo_acquire (model)
>           && riscv_memmodel_needs_amo_release (model))
>         fputs (".aqrl", file);
> @@ -4605,18 +4605,23 @@ riscv_print_operand (FILE *file, rtx op, int letter)
>        else if (riscv_memmodel_needs_amo_release (model))
>         fputs (".rl", file);
>        break;
> +    }
>
> -    case 'I':
> +    case 'I': {
> +      const enum memmodel model = memmodel_base (INTVAL (op));
>        if (model == MEMMODEL_SEQ_CST)
>         fputs (".aqrl", file);
>        else if (riscv_memmodel_needs_amo_acquire (model))
>         fputs (".aq", file);
>        break;
> +    }
>
> -    case 'J':
> +    case 'J': {
> +      const enum memmodel model = memmodel_base (INTVAL (op));
>        if (riscv_memmodel_needs_amo_release (model))
>         fputs (".rl", file);
>        break;
> +    }
>
>      case 'i':
>        if (code != REG)
> --
> 2.40.1
>

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