[Bug target/91453] New: ICE in elimination_costs_in_insn at reload1.c:3547

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91453

            Bug ID: 91453
           Summary: ICE in elimination_costs_in_insn at reload1.c:3547
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: hjl.tools at gmail dot com, uros at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu

It's as old as we have -mavx512vl (since GCC 5.1.0):

$ gfortran
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/deferred_character_23.f90
-Os -mavx512vl -fno-rerun-cse-after-loop -c
during RTL pass: ira
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/deferred_character_23.f90:27:0:

   27 | END MODULE TN4
      | 
internal compiler error: in elimination_costs_in_insn, at reload1.c:3547
0x6b68b6 elimination_costs_in_insn
        /home/marxin/Programming/gcc/gcc/reload1.c:3547
0xdad05d calculate_elim_costs_all_insns()
        /home/marxin/Programming/gcc/gcc/reload1.c:1609
0xc5d45d ira_costs()
        /home/marxin/Programming/gcc/gcc/ira-costs.c:2305
0xc56b79 ira_build()
        /home/marxin/Programming/gcc/gcc/ira-build.c:3432
0xc4db07 ira
        /home/marxin/Programming/gcc/gcc/ira.c:5352
0xc4db07 execute
        /home/marxin/Programming/gcc/gcc/ira.c:5663