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

[Andy Kaylor via cfe-commits]

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@@ -33,6 +33,28 @@ static mlir::Value emitIntrinsicCallOp(CIRGenFunction &cgf, const CallExpr *e,
       .getResult();
 }
 
+static mlir::Value getMaskVecValue(CIRGenBuilderTy &builder, mlir::Value mask,
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andykaylor wrote:

I don't think that's what we want. The function will be shared. I was just mentioning it because we'll want the same implementation in both PRs and whichever one is merged second will need to be rebased on the other.

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