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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110227] [13/14 Regression] gcc generates invalid AVX-512
 code
Date: Tue, 13 Jun 2023 03:06:59 +0000
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X-Bugzilla-Keywords: assemble-failure
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110227

--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Andrew Pinski from comment #2)
> Semi-Reduced testcase:
> ```
> #include <immintrin.h>
>=20
> void f()
> {
>   __m256i mask =3D _mm256_set_epi32(0, 0, 0, 0, -1, -1, -1, -1);
>   register __m256i reg asm("xmm16") =3D mask;
>   asm(""::"v"(reg));
> }
> ```
>=20
> Most likely introduced by r13-2804-ga282f086ef26d9 .

 (define_insn "mov<mode>_internal"
   [(set (match_operand:VMOVE 0 "nonimmediate_operand"
-        "=3Dv,v ,v ,m")
+        "=3Dv,v ,v,v ,m")
        (match_operand:VMOVE 1 "nonimmediate_or_sse_const_operand"
-        " C,<sseconstm1>,vm,v"))]
+        " C,<sseconstm1>,BH,vm,v"))]

We need to use "x" instead of "v".=