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From: "xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/113622] ICE with vectors in named registers
Date: Fri, 26 Jan 2024 20:36:49 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113622

--- Comment #3 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> x86_64 Testcase (which invokes undefined behavior) which has been failing
> since at least 4.9.1 even:
> ```
> typedef double __attribute__ ((vector_size (16))) vec;
> register vec a asm("ymm2"), b asm("ymm0"), c asm("ymm1");
>=20
> void
> test (void)
> {
>   for (int i =3D 0; i < 4; i++)
>     c[i] =3D a[i] < b[i] ? 0.1 : 0.2;
> }
> ```

Phew.  Then maybe I should refactor the LoongArch test cases to avoid using
named registers...=