[clang] [Sema] Provide `-fvisibility-global-new-delete=` option (PR #75364)

[Fangrui Song via cfe-commits]

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@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 %s -std=c++11 -triple x86_64-unknown-unknown -fvisibility=hidden -emit-llvm -o - | FileCheck %s -DLINKAGE=dso_local
+// RUN: %clang_cc1 %s -std=c++11 -triple x86_64-unknown-unknown -fvisibility=default -fvisibility-global-new-delete=force-hidden -emit-llvm -o - | FileCheck %s -DLINKAGE=hidden
+// RUN: %clang_cc1 %s -std=c++11 -triple x86_64-unknown-unknown -fvisibility=hidden -fvisibility-global-new-delete=force-protected -emit-llvm -o - | FileCheck %s -DLINKAGE=protected
+// RUN: %clang_cc1 %s -std=c++11 -triple x86_64-unknown-unknown -fvisibility=hidden -fvisibility-global-new-delete=force-default -emit-llvm -o - | FileCheck %s -DLINKAGE=dso_local
+// RUN: %clang_cc1 %s -std=c++11 -triple x86_64-unknown-unknown -fvisibility=hidden -fvisibility-global-new-delete=source -emit-llvm -o - | FileCheck %s -DLINKAGE=hidden
+
+namespace std {
+  typedef __typeof__(sizeof(0)) size_t;
+  struct nothrow_t {};
+}
+
+// Definition which inherits visibility from the implicit compiler generated declaration.
+void operator delete(void*) throw() {}
+// CHECK: define [[LINKAGE]] void @_ZdlPv
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MaskRay wrote:

Add a test for `operator new`?

`-fvisibility-global-new-delete-hidden`, from https://reviews.llvm.org/D53787, does not have a test. Thanks for adding the test

https://github.com/llvm/llvm-project/pull/75364