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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/102477] ICE: in emit_move_insn, at expr.c:4026 at -Og
 with __builtin_shufflevector()
Date: Wed, 29 Sep 2021 15:16:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102477

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 51517
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51517&action=3Dedit
different testcase failing at -O without __builtin_shufflevector()

$ x86_64-pc-linux-gnu-gcc -O testcase.c=20
during RTL pass: expand
testcase.c: In function 'foo':
testcase.c:7:9: internal compiler error: in emit_move_insn, at expr.c:4026
    7 |   V v =3D -(g >> sizeof (g) - 1);
      |         ^~~~~~~~~~~~~~~~~~~~~~
0x6b8206 emit_move_insn(rtx_def*, rtx_def*)
        /repo/gcc-trunk/gcc/expr.c:4026
0xe36893 expand_gimple_stmt_1
        /repo/gcc-trunk/gcc/cfgexpand.c:4006
0xe36893 expand_gimple_stmt
        /repo/gcc-trunk/gcc/cfgexpand.c:4040
0xe3c98f expand_gimple_basic_block
        /repo/gcc-trunk/gcc/cfgexpand.c:6082
0xe3e55e execute
        /repo/gcc-trunk/gcc/cfgexpand.c:6808
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