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

[hjl.tools at gmail dot com via Gcc-bugs]

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

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
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.