[llvm] [DirectX] Lower `llvm.lifetime.*` intrinsics to stores when DXIL version is lower than 1.6 (PR #147432)

[Farzon Lotfi via llvm-commits]

================
@@ -745,6 +747,37 @@ class OpLowerer {
     });
   }
 
+  [[nodiscard]] bool lowerLifetimeIntrinsic(Function &F) {
+    IRBuilder<> &IRB = OpBuilder.getIRB();
+    return replaceFunction(F, [&](CallInst *CI) -> Error {
----------------
farzonl wrote:

why do we need a lambda for this?

https://github.com/llvm/llvm-project/pull/147432