[clang] [Driver][BoundsSafety] Add -fbounds-safety-experimental flag (PR #70480)

[Yeoul Na via cfe-commits]

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@@ -0,0 +1,11 @@
+// RUN: %clang -c %s -### 2>&1 | FileCheck -check-prefix T0 %s
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rapidsna wrote:

@nickdesaulniers @MaskRay Thank you! I removed the new directory and moved the tests to conform to the existing layout.

https://github.com/llvm/llvm-project/pull/70480