https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109566
--- Comment #7 from Sebastian Huber <sebastian.hu...@embedded-brains.de> ---
(In reply to Jakub Jelinek from comment #6)
> How have you configured gcc? I certainly can't reproduce this with
> --enable-targets=powerpc64-linux,powerpc-linux --with-cpu-32=power7
> --with-cpu-64=power7 --with-long-double-128 --enable-checking=release
> --target=powerpc64-linux-gnu --enable-languages=c,c++,fortran,lto
> nor
> --target powerpc-linux --enable-languages=c,c++
> configured gccs.
I notices this issue with the powerpc-rtems6 target while building Newlib. Can
you compile the test case with your compiler?
I was able to reproduce the error with the powerpc-elf target:
powerpc-elf-gcc -O2 -mcpu=power10 -c test.c
/home/EB/sebastian_h/tmp/bug-gcc-pr109566/test.c: In function '__ieee754_fmod':
/home/EB/sebastian_h/tmp/bug-gcc-pr109566/test.c:32:1: error: unrecognizable
insn:
32 | }
| ^
(insn 49 8 50 2 (parallel [
(set (reg:CC 100 0)
(compare:CC (and:DI (ashift:DI (reg:DI 9 9 [123])
(const_int 33 [0x21]))
(const_int -9007199254740992 [0xffe0000000000000]))
(const_int 0 [0])))
(clobber (reg:DI 9 9 [127]))
]) "/home/EB/sebastian_h/tmp/bug-gcc-pr109566/test.c":21:4 -1
(nil))
during RTL pass: split2
/home/EB/sebastian_h/tmp/bug-gcc-pr109566/test.c:32:1: internal compiler error:
in extract_insn, at recog.cc:2791
0x40730a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/EB/sebastian_h/src/gcc/gcc/rtl-error.cc:108
0x407329 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/EB/sebastian_h/src/gcc/gcc/rtl-error.cc:116
0x957257 extract_insn(rtx_insn*)
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:2791
0x9572b1 extract_insn_cached(rtx_insn*)
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:2680
0x6a99ab cleanup_subreg_operands(rtx_insn*)
/home/EB/sebastian_h/src/gcc/gcc/final.cc:3054
0x95561c split_insn
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:3420
0x95a392 split_all_insns()
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:3488
0x95a4a8 execute
/home/EB/sebastian_h/src/gcc/gcc/recog.cc:4412
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
