[Bug target/102154] [12 Regression] ICE in extract_insn, at recog.c:2769 since r12-3277-gd2874d905647a1d146dafa60199d440e837adc4d

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102154

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Is this also the cause of several libstdc++ FAILs on ppc64le?

/home/jwakely/build/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/bits/random.h:2936:
error: unrecognizable insn:
(insn 11 10 12 2 (set (reg:SF 118 [ <retval> ])
        (subreg:SF (reg:DI 122) 0))
"/home/jwakely/build/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/bits/random.h":2936:16
-1
     (nil))
during RTL pass: vregs
/home/jwakely/build/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/bits/random.h:2936:
internal compiler error: in extract_insn, at recog.c:2769
0x10221bb7 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /home/jwakely/src/gcc/gcc/rtl-error.c:108
0x10221c0f _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /home/jwakely/src/gcc/gcc/rtl-error.c:116
0x10de48af extract_insn(rtx_insn*)
        /home/jwakely/src/gcc/gcc/recog.c:2769
0x10a3c82f instantiate_virtual_regs_in_insn
        /home/jwakely/src/gcc/gcc/function.c:1611
0x10a3c82f instantiate_virtual_regs
        /home/jwakely/src/gcc/gcc/function.c:1985
0x10a3c82f execute
        /home/jwakely/src/gcc/gcc/function.c:2034
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
compiler exited with status 1