[clang] [CIR] Implement device-wide nounwind attribute (PR #227016)

[Steffen Larsen via cfe-commits]

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+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fcuda-is-device -fclangir -emit-cir %s -o - \
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steffenlarsen wrote:

It has been removed. I think the unified test (especially since it doesn't have a target requirement) should cover this as well.

https://github.com/llvm/llvm-project/pull/227016