[clang] [llvm] [polly] [X86] Remove knl/knm specific ISAs supports (PR #92883)

[Freddy Ye via llvm-commits]

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@@ -139,6 +139,9 @@ Changes to the Windows Target
 Changes to the X86 Backend
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+- Removed knl/knm specific ISA lowerings: AVX512PF, AVX512ER, PREFETCHWT1,
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FreddyLeaf wrote:

[3470095](https://github.com/llvm/llvm-project/pull/92883/commits/347009534afb057b9c33f66cc76888f302e62c8c)

https://github.com/llvm/llvm-project/pull/92883