[Bug target/82812] New: ICE in emit_move_insn, at expr.c:3706

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82812

            Bug ID: 82812
           Summary: ICE in emit_move_insn, at expr.c:3706
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: julia.koval at intel dot com, kyukhin at gcc dot gnu.org
  Target Milestone: ---
            Target: x86_64-linux-gnu

A GFNI fails starting from r254250:

$ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-3.c
-mgfni
during RTL pass: expand
In file included from
/home/marxin/bin/gcc/lib64/gcc/x86_64-pc-linux-gnu/8.0.0/include/immintrin.h:95:0,
                 from
/home/marxin/bin/gcc/lib64/gcc/x86_64-pc-linux-gnu/8.0.0/include/x86intrin.h:48,
                 from
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-3.c:6:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-3.c: In
function ‘avx512vl_test’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/gfni-3.c:15:10:
internal compiler error: in emit_move_insn, at expr.c:3703
     x3 = _mm256_gf2p8affineinv_epi64_epi8(x3, x4, 3);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x8d4cba emit_move_insn(rtx_def*, rtx_def*)
        ../../gcc/expr.c:3702
0x8b7342 copy_to_reg(rtx_def*)
        ../../gcc/explow.c:591
0xfec6d6 ix86_expand_args_builtin
        ../../gcc/config/i386/i386.c:34113
0xff96ef ix86_expand_builtin
        ../../gcc/config/i386/i386.c:37244
0x77d6e5 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
        ../../gcc/builtins.c:6512
0x8d1269 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        ../../gcc/expr.c:10847
0x8dceb3 store_expr_with_bounds(tree_node*, rtx_def*, int, bool, bool,
tree_node*)
        ../../gcc/expr.c:5551
0x8de6b7 expand_assignment(tree_node*, tree_node*, bool)
        ../../gcc/expr.c:5319
0x7ad8ed expand_call_stmt
        ../../gcc/cfgexpand.c:2672
0x7b0cd8 expand_gimple_stmt_1
        ../../gcc/cfgexpand.c:3608
0x7b13ce expand_gimple_stmt
        ../../gcc/cfgexpand.c:3774
0x7b8f02 expand_gimple_basic_block
        ../../gcc/cfgexpand.c:5779
0x7ba92f execute
        ../../gcc/cfgexpand.c:6385