On Thu, 3 Jul 2025, Pietro Monteiro wrote:
> Use TImode instead of the default DImode. Fixes ICE when building libstc++.
I'll have to look into this. There might be a delay.
Thanks for the patch though!
brgds, H-P
>
> Additionally, this change fixes:
>
> c-c++-common/pr111309-1.c -Wc++-compat (test for excess errors)
> c-c++-common/pr111309-1.c -Wc++-compat execution test
> gcc.dg/pr105094.c (test for excess errors)
> gcc.dg/torture/pr116480-1.c -O0 (test for excess errors)
> gcc.dg/torture/pr116480-1.c -O1 (test for excess errors)
>
> gcc/ChangeLog:
> PR target/120935
> * config/mmix/mmix.h (MAX_FIXED_MODE_SIZE): Define.
>
> Signed-off-by: Pietro Monteiro <pie...@sociotechnical.xyz>
> ---
> gcc/config/mmix/mmix.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/gcc/config/mmix/mmix.h b/gcc/config/mmix/mmix.h
> index 44669e195b4..e1af549ac49 100644
> --- a/gcc/config/mmix/mmix.h
> +++ b/gcc/config/mmix/mmix.h
> @@ -793,6 +793,10 @@ typedef struct { int regs; int lib; } CUMULATIVE_ARGS;
> #define NO_DOLLAR_IN_LABEL
> #define NO_DOT_IN_LABEL
>
> +/* An integer expression for the size in bits of the largest integer machine
> + mode that should actually be used. We allow pairs of registers. */
> +#define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (TImode)
> +
> #endif /* GCC_MMIX_H */
> /*
> * Local variables:
> --
> 2.43.0
>
>
