[Bug target/104409] -march=armv8.6-a+ls64 crashes, LS64 builtins causes ICE

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104409

--- Comment #4 from Zdenek Sojka <zsojka at seznam dot cz> ---
Probably related crash: (with -fpack-struct)
$ echo > testcase.c
aarch64-unknown-linux-gnu-gcc -march=armv8.6-a+ls64 -fpack-struct testcase.c 
<built-in>: internal compiler error: in aarch64_init_ls64_builtins_types, at
config/aarch64/aarch64-builtins.cc:1616
0x8645dc aarch64_init_ls64_builtins_types
        /repo/gcc-trunk/gcc/config/aarch64/aarch64-builtins.cc:1616
0x8645dc aarch64_init_ls64_builtins
        /repo/gcc-trunk/gcc/config/aarch64/aarch64-builtins.cc:1622
0x8645dc aarch64_general_init_builtins()
        /repo/gcc-trunk/gcc/config/aarch64/aarch64-builtins.cc:1735
0x14b06b8 aarch64_init_builtins
        /repo/gcc-trunk/gcc/config/aarch64/aarch64.cc:14335
0xb6d2bd c_define_builtins
        /repo/gcc-trunk/gcc/c-family/c-common.cc:4221
0xb6d2bd c_common_nodes_and_builtins()
        /repo/gcc-trunk/gcc/c-family/c-common.cc:4708
0xac0678 c_init_decl_processing()
        /repo/gcc-trunk/gcc/c/c-decl.cc:4503
0xb07368 c_objc_common_init()
        /repo/gcc-trunk/gcc/c/c-objc-common.cc:62
0xaac283 lang_dependent_init
        /repo/gcc-trunk/gcc/toplev.cc:1848
0xaac283 do_compile
        /repo/gcc-trunk/gcc/toplev.cc:2143
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.