The test installed by "x86: make VPTERNLOG* usable on less than 512-bit
operands with just AVX512F" won't succeed on 32-bit, for floating point
operations being done there (by default) without using SIMD insns.
gcc/testsuite/
* gcc.target/i386/avx512f-copysign.c: Suppress for 32-bit.
-/* { dg-do compile } */
+/* { dg-do compile { target { ! ia32 } } } */
/* { dg-options "-mavx512f -mno-avx512vl -mprefer-vector-width=512 -O2" } */
/* { dg-final { scan-assembler-times "vpternlog\[dq\]\[ \\t\]+\\\$(?:216|228|0xd8|0xe4)," 5 } } */