[clang] [Clang][Basic] Enable `__has_feature(cfi)` (PR #151348)

[via cfe-commits]

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@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -E -fsanitize=cfi-cast-strict -o - %s | FileCheck --check-prefix=CHECK-CFISAN %s
+// RUN: %clang_cc1 -E -fsanitize=cfi-derived-cast -o - %s | FileCheck --check-prefix=CHECK-CFISAN %s
+// RUN: %clang_cc1 -E -fsanitize=cfi-icall -o - %s | FileCheck --check-prefix=CHECK-CFISAN %s
+// RUN: %clang_cc1 -E -fsanitize=cfi-mfcall -o - %s | FileCheck --check-prefix=CHECK-CFISAN %s
+// RUN: %clang_cc1 -E -fsanitize=cfi-unrelated-cast -o - %s | FileCheck --check-prefix=CHECK-CFISAN %s
+// RUN: %clang_cc1 -E -fsanitize=cfi-nvcall -o - %s | FileCheck --check-prefix=CHECK-CFISAN %s
+// RUN: %clang_cc1 -E -fsanitize=cfi-vcall -o - %s | FileCheck --check-prefix=CHECK-CFISAN %s
+// RUN: %clang_cc1 -E %s -o - | FileCheck --check-prefix=CHECK-NO-CFISAN %s
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moorabbit wrote:

Thanks for pointing that out!

Tried to address this in a new commit.
Let me know if there's any scenario I may have missed and that you would like included. 

https://github.com/llvm/llvm-project/pull/151348