[Bug middle-end/122703] New: [16 Regression][gcn] ICE in extract_insn, at recog.cc:2884 (during RTL pass: ira) gcc/newlib/libc/stdlib/strtoimax.c:148:1: error: unrecognizable insn: 148 | }

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122703

            Bug ID: 122703
           Summary: [16 Regression][gcn] ICE in extract_insn, at
                    recog.cc:2884 (during RTL pass: ira)
                    gcc/newlib/libc/stdlib/strtoimax.c:148:1: error:
                    unrecognizable insn:   148 | }
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Keywords: build, ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
                CC: ams at gcc dot gnu.org
  Target Milestone: ---
            Target: gcn

Building GCC with in-tree newlib fails as follows:

/home/tob/repos/gcc/newlib/libc/stdlib/strtoimax.c: In function
‘_strtoimax_l.isra’:
/home/tob/repos/gcc/newlib/libc/stdlib/strtoimax.c:148:1: error: unrecognizable
insn:
  148 | }
      | ^
(insn 221 218 222 19 (parallel [
            (set (reg:SI 700 [ c.4_36 ])
                (reg/v:SI 684 [ c ]))
            (clobber (scratch:BI))
        ]) "/home/tob/repos/gcc/newlib/libc/stdlib/strtoimax.c":119:16 -1
     (expr_list:REG_DEAD (reg/v:SI 684 [ c ])
        (nil)))
during RTL pass: ira
/home/tob/repos/gcc/newlib/libc/stdlib/strtoimax.c:148:1: internal compiler
error: in extract_insn, at recog.cc:2884
0x218359d internal_error(char const*, ...)
        /home/tob/repos/gcc/gcc/diagnostic-global-context.cc:787
0x9fb7d9 fancy_abort(char const*, int, char const*)
        /home/tob/repos/gcc/gcc/diagnostics/context.cc:1805
0x89704a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /home/tob/repos/gcc/gcc/rtl-error.cc:108
0x897066 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /home/tob/repos/gcc/gcc/rtl-error.cc:116
0x895b45 extract_insn(rtx_insn*)
        /home/tob/repos/gcc/gcc/recog.cc:2884
0xf3de71 ira_remove_insn_scratches(rtx_insn*, bool, _IO_FILE*, rtx_def*
(*)(rtx_def*))
        /home/tob/repos/gcc/gcc/ira.cc:5454
0xf4080d remove_scratches
        /home/tob/repos/gcc/gcc/ira.cc:5498
0xf4080d ira
        /home/tob/repos/gcc/gcc/ira.cc:5854
0xf4080d execute
        /home/tob/repos/gcc/gcc/ira.cc:6214