[clang] [CIR] Accept _Complex and all float formats in x86_64 callconv lowering (PR #215117)

[Andy Kaylor via cfe-commits]

================
@@ -179,6 +179,11 @@ mlir::Value createIgnoredValue(mlir::OpBuilder &builder, mlir::Location loc,
 /// llvm.align on Indirect args.  Preserves any existing arg attributes on
 /// retained arg slots.  \p origArgTypes provides the pre-rewrite type for
 /// each arg slot (needed to compute the llvm.byval pointee type).
+///
+/// An attribute this function sets can already be present on the arg slot:
----------------
andykaylor wrote:

I would remove this comment. Now that the code is correct, this is just history.

https://github.com/llvm/llvm-project/pull/215117