[clang] [llvm] [clang] Reland Add tanf16 builtin and support for tan constrained intrinsic (PR #94559)

[Joshua Batista via cfe-commits]

================
@@ -2923,6 +2923,18 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
       SetSqrtFPAccuracy(Call);
       return RValue::get(Call);
     }
+
+    case Builtin::BItan:
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bob80905 wrote:

What is the difference between `BItanf` and `BI_builtin_tanf` ?

https://github.com/llvm/llvm-project/pull/94559