[Bug target/84876] New: [8 Regression] ICE on invalid code in lra_assign at gcc/lra-assigns.c:1601 since r258504

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84876

            Bug ID: 84876
           Summary: [8 Regression] ICE on invalid code in lra_assign at
                    gcc/lra-assigns.c:1601 since r258504
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

Starting from the mentioned revision we ICE on:

$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr80833-3.c
during RTL pass: reload
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr80833-3.c: In
function ‘test’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr80833-3.c:11:1:
internal compiler error: Segmentation fault
 }
 ^
0xc46c4f crash_signal
        ../../gcc/toplev.c:325
0x7ffff6a2fba7 __GI___libc_malloc
        malloc.c:2943
0x16c9627 xmalloc
        ../../libiberty/xmalloc.c:147
0xaa011a lra_assign(bool&)
        ../../gcc/lra-assigns.c:1601
0xa9b034 lra(_IO_FILE*)
        ../../gcc/lra.c:2482
0xa4c421 do_reload
        ../../gcc/ira.c:5465
0xa4c421 execute
        ../../gcc/ira.c:5649