[clang] [clang-tools-extra] [compiler-rt] [llvm] [X86] AMD Zen 6 Initial enablement (PR #179150)

[Simon Pilgrim via cfe-commits]

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@@ -1518,3 +1518,9 @@ def X86vpmaddwd_su : PatFrag<(ops node:$lhs, node:$rhs),
   return N->hasOneUse();
 }]>;
 
+// Bit reverse bytes operation
+def x86vpbitrevb : SDNode<"X86ISD::VPBITREVB", SDTShuff1Op>;
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RKSimon wrote:

I really hope we can avoid this and use ISD::BIREVERSE legal ops directly

https://github.com/llvm/llvm-project/pull/179150