[clang] [Clang] Add support for scoped atomic thread fence (PR #115545)

[Shilei Tian via cfe-commits]

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@@ -0,0 +1,179 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=amdgcn-amd-amdhsa -ffreestanding \
+// RUN:   -fvisibility=hidden | FileCheck --check-prefix=AMDGCN %s
+//: %clang_cc1 %s -emit-llvm -o - -triple=spirv64-unknown-unknown -ffreestanding \
+//:   -fvisibility=hidden | FileCheck --check-prefix=SPIRV %s
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shiltian wrote:

but at least show the front end can generate IR

https://github.com/llvm/llvm-project/pull/115545