[X86][Clang] Add AVX512 Integer Comparison Intrinsics for constexpr Evaluation (#164026) Enables constexpr evaluation for the following AVX512 Integer Comparison Intrinsics: ``` _mm_cmp_epi8_mask _mm_cmp_epu8_mask _mm_cmp_epi16_mask _mm_cmp_epu16_mask _mm_cmp_epi32_mask _mm_cmp_epu32_mask _mm_cmp_epi64_mask _mm_cmp_epu64_mask _mm256_cmp_epi8_mask _mm256_cmp_epu8_mask _mm256_cmp_epi16_mask _mm256_cmp_epu16_mask _mm256_cmp_epi32_mask _mm256_cmp_epu32_mask _mm256_cmp_epi64_mask _mm256_cmp_epu64_mask _mm512_cmp_epi8_mask _mm512_cmp_epu8_mask _mm512_cmp_epi16_mask _mm512_cmp_epu16_mask _mm512_cmp_epi32_mask _mm512_cmp_epu32_mask _mm512_cmp_epi64_mask _mm512_cmp_epu64_mask ``` Part 1 of #162054
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