[Bug debug/106746] [13 Regression] '-fcompare-debug' failure (length) with -O2 -fsched2-use-superblocks since r13-2041-g6624ad73064de241

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106746

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #4)
> This simple change:
> 
> diff --git a/gcc/config/i386/i386-modes.def b/gcc/config/i386/i386-modes.def
> index e2e1e18d24d..b49daaef253 100644
> --- a/gcc/config/i386/i386-modes.def
> +++ b/gcc/config/i386/i386-modes.def
> @@ -24,6 +24,8 @@ along with GCC; see the file COPYING3.  If not see
>  FRACTIONAL_FLOAT_MODE (XF, 80, 12, ieee_extended_intel_96_format);
>  FLOAT_MODE (TF, 16, ieee_quad_format);
>  FLOAT_MODE (HF, 2, ieee_half_format);
> +FLOAT_MODE (BF, 2, 0);
> +ADJUST_FLOAT_FORMAT (BF, &arm_bfloat_half_format);
>  
>  /* In ILP32 mode, XFmode has size 12 and alignment 4.
>     In LP64 mode, XFmode has size and alignment 16.  */
> 
> triggers this issue.

This triggered by r13-1942.