[clang] [llvm] [PowerPC] Support -fpatchable-function-entry (PR #92997)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,4 @@
+// RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -fsyntax-only -verify %s
+
+// expected-error at +1 {{'patchable_function_entry' attribute is not yet supported on AIX}}
+__attribute__((patchable_function_entry(0))) void f();
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MaskRay wrote:

Some test directory adopt `rm -rf %t && split-file %s %t && cd %t` (https://llvm.org/docs/TestingGuide.html#extra-files)

https://github.com/llvm/llvm-project/pull/92997