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Subject: [Bug target/54412] minimal 32-byte stack alignment with -mavx on
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Date: Mon, 23 Aug 2021 03:12:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D54412

Mingye Wang <arthur200126 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |arthur200126 at gmail dot =
com

--- Comment #30 from Mingye Wang <arthur200126 at gmail dot com> ---
One of the weird probably SEH-related things is that the lack-of-alignment
behavior of comment 28 and attachment 1 is not reproduced on a "normal" Lin=
ux
GCC with __attribute__((ms_abi)) sprinkled all over to get the right calling
convention. The code takes the same shape, uses mostly the same registers, =
but
the `and rsp, -32` is just either not there or placed wrong.=