[clang] [clang][Sema] support block pointers as non-type template parameters (PR #191694)

[Matheus Izvekov via cfe-commits]

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@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -std=c++20 -fblocks -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s
+
+template<void (^B)()> void f() {}
+
+// CHECK: define{{.*}} void @_Z12test_literalv()
+void test_literal() {
+  // CHECK: call void @_Z1fIXcvU13block_pointerFvvEadUb_EEvv()
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mizvekov wrote:

Hm, why does `block_pointer` substring appear in this mangling?

https://github.com/llvm/llvm-project/pull/191694