[clang] [llvm] [CIR][X86] Implement lowering for sqrt builtins (PR #169310)

[Andy Kaylor via llvm-commits]

================
@@ -45,6 +46,14 @@
 using namespace cir;
 using namespace llvm;
 
+// Actual lowering
----------------
andykaylor wrote:

You're missing the beginning of the function, and this should be sunk down to be located near the other floating point operations,

https://github.com/llvm/llvm-project/pull/169310