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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/62133] internal compiler error:in classify_argument, at
 config/i386/i386.c:6240 when using #pragma GCC target ("arch=core-avx2")
Date: Wed, 19 Oct 2022 14:34:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D62133

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
(In reply to Zdenek Sojka from comment #2)
> Another testcase, for C code:
> $ cat testcase.c=20
> __bf16 __attribute__((__vector_size__(8))) foo(void) {}
> $ x86_64-pc-linux-gnu-gcc testcase.c=20
> testcase.c: In function 'foo':
> testcase.c:1:1: internal compiler error: in classify_argument, at
> config/i386/i386.cc:2523
>     1 | __bf16 __attribute__((__vector_size__(8))) foo(void) {}
>       | ^~~~~~
> 0x8437a7 classify_argument
>         /repo/gcc-trunk/gcc/config/i386/i386.cc:2523
> 0x1788e56 classify_argument
>         /repo/gcc-trunk/gcc/config/i386/i386.cc:2543
> 0x1788f28 examine_argument
>         /repo/gcc-trunk/gcc/config/i386/i386.cc:2580
> 0x17898af ix86_return_in_memory
>         /repo/gcc-trunk/gcc/config/i386/i386.cc:4265
> 0x1044e71 aggregate_value_p(tree_node const*, tree_node const*)
>         /repo/gcc-trunk/gcc/function.cc:2119
> 0x1049981 allocate_struct_function(tree_node*, bool)
>         /repo/gcc-trunk/gcc/function.cc:4848
> 0xd596a4 store_parm_decls()
>         /repo/gcc-trunk/gcc/c/c-decl.cc:10434
> 0xdbdced c_parser_declaration_or_fndef
>         /repo/gcc-trunk/gcc/c/c-parser.cc:2612
> 0xdc5eb3 c_parser_external_declaration
>         /repo/gcc-trunk/gcc/c/c-parser.cc:1833
> 0xdc68d3 c_parser_translation_unit
>         /repo/gcc-trunk/gcc/c/c-parser.cc:1695
> 0xdc68d3 c_parse_file()
>         /repo/gcc-trunk/gcc/c/c-parser.cc:24213
> 0xe28a61 c_common_parse_file()
>         /repo/gcc-trunk/gcc/c-family/c-opts.cc:1247
> 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.

My apologies, the above belongs to PR107261=