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From: "juzhe.zhong at rivai dot ai" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/114639] [riscv] ICE in create_pre_exit, at
 mode-switching.cc:451
Date: Sun, 28 Apr 2024 06:22:02 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114639

--- Comment #18 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
(In reply to Li Pan from comment #17)
> According to the V abi, looks like the asm code tries to save/restore the
> callee-saved registers when there is a call in function body.
>=20
> | Name    | ABI Mnemonic | Meaning                      | Preserved across
> calls?
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> =3D=3D=3D=3D
> | v0      |              | Argument register            | No
> | v1-v7   |              | Callee-saved registers       | Yes
> | v8-v23  |              | Argument registers           | No
> | v24-v31 |              | Callee-saved registers       | Yes

I see, https://godbolt.org/z/7bx1EEdGn
When we use 44 instead of get_vl (), the load/store instructions are gone.=