[Bug target/103623] [12 Regression] error: unable to generate reloads (ICE in curr_insn_transform, at lra-constraints.c:4132), or error: insn does not satisfy its constraints (ICE in extract_constrain_insn_cached, at recog.c:2682)

[wschmidt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103623

--- Comment #6 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
With a quick and dirty patch to implement this, I get:

$ /home/wschmidt/gcc/build/gcc-e300/gcc/xgcc -c -O2 pr103623.c
-B/home/wschmidt/gcc/build/gcc-e300/gcc -mcpu=401
pr103623.c: In function 'main':
pr103623.c:2:16: error: '__builtin_unpack_longdouble' requires long double to
be IBM 128-bit format
    2 | #define UNPACK __builtin_unpack_longdouble
      |                ^
pr103623.c:11:15: note: in expansion of macro 'UNPACK'
   11 |   double x0 = UNPACK (a, 0);
      |               ^~~~~~

Arseny, does this properly diagnose the issue for you?