[llvm] [DirectX] Allow llvm lifetime intrinsics to pass on to the DirectX backend (PR #136622)

[Chris B via llvm-commits]

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@@ -0,0 +1,20 @@
+; RUN: opt -S -passes='dxil-op-lower' -mtriple=dxil-pc-shadermodel6.3-library %s | FileCheck %s
+
+; CHECK-NOT: error: Unsupported intrinsic llvm.lifetime.start.p0 for DXIL lowering
+; CHECK-NOT: error: Unsupported intrinsic llvm.lifetime.end.p0 for DXIL lowering
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llvm-beanz wrote:

Do we really need to check-not an error? If it errors `opt` will return non-zero and fail the test right?

https://github.com/llvm/llvm-project/pull/136622