[clang] [CIR][X86] Add support for kunpck builtins (PR #168757)

[Hendrik Hübner via cfe-commits]

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@@ -211,6 +211,44 @@ mlir::Value CIRGenFunction::emitX86BuiltinExpr(unsigned builtinID,
                  std::string("unimplemented X86 builtin call: ") +
                      getContext().BuiltinInfo.getName(builtinID));
     return {};
+
+  case X86::BI__builtin_ia32_kunpckdi:
+  case X86::BI__builtin_ia32_kunpcksi:
+  case X86::BI__builtin_ia32_kunpckhi: {
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HendrikHuebner wrote:

Can you move this to a separate function? In that case also pass the ops one by one and give them names

https://github.com/llvm/llvm-project/pull/168757