Issue 162051
Summary [X86][Clang] VectorExprEvaluator::VisitCallExpr / InterpretBuiltin - add AVX512 KTEST/KORTEST intrinsics to be used in constexpr
Labels good first issue, backend:X86, clang:headers, constexpr, clang:bytecode
Assignees
Reporter RKSimon
    Followup to #158653 - the AVX512 mask predicate KTEST intrinsics should be able to be used in constexpr - probably by interp__builtin_elementwise_int_binop?

```
unsigned char _ktestc_mask16_u8 (__mmask16 a, __mmask16 b)
unsigned char _ktestc_mask32_u8 (__mmask32 a, __mmask32 b)
unsigned char _ktestc_mask64_u8 (__mmask64 a, __mmask64 b)
unsigned char _ktestc_mask8_u8 (__mmask8 a, __mmask8 b)
unsigned char _ktestz_mask16_u8 (__mmask16 a, __mmask16 b)
unsigned char _ktestz_mask32_u8 (__mmask32 a, __mmask32 b)
unsigned char _ktestz_mask64_u8 (__mmask64 a, __mmask64 b)
unsigned char _ktestz_mask8_u8 (__mmask8 a, __mmask8 b)

int _mm512_kortestc (__mmask16 k1, __mmask16 k2)
unsigned char _kortestc_mask16_u8 (__mmask16 a, __mmask16 b)
unsigned char _kortestc_mask32_u8 (__mmask32 a, __mmask32 b)
unsigned char _kortestc_mask64_u8 (__mmask64 a, __mmask64 b)
unsigned char _kortestc_mask8_u8 (__mmask8 a, __mmask8 b)
int _mm512_kortestz (__mmask16 k1, __mmask16 k2)
unsigned char _kortestz_mask16_u8 (__mmask16 a, __mmask16 b)
unsigned char _kortestz_mask32_u8 (__mmask32 a, __mmask32 b)
unsigned char _kortestz_mask64_u8 (__mmask64 a, __mmask64 b)
unsigned char _kortestz_mask8_u8 (__mmask8 a, __mmask8 b)
```
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