[clang] [llvm] [HLSL] Implement `rsqrt` intrinsic (PR #84820)

[Farzon Lotfi via cfe-commits]

================
@@ -0,0 +1,49 @@
+; ModuleID = 'D:\projects\llvm-project\clang\test\SemaHLSL\BuiltIns\dot-warning.hlsl'
----------------
farzonl wrote:

this file shouldn't be in this pr. this was a mistake.

https://github.com/llvm/llvm-project/pull/84820