[clang] [clang] Allow devirtualisation of indirect calls to final virtual methods (PR #165341)

[Chuanqi Xu via cfe-commits]

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@@ -0,0 +1,414 @@
+// Actual triple does not matter, just ensuring that the ABI being used for
+// mangling and similar is consistent. Choosing x86_64 as that seems to be a
+// configured target for most build configurations
+// RUN: %clang_cc1 -triple=x86_64 -std=c++26 %s -emit-llvm -O3                          -o - | FileCheck %s
+// RUN: %clang_cc1 -triple=x86_64 -std=c++26 %s -emit-llvm -O3 -fstrict-vtable-pointers -o - | FileCheck %s --check-prefix=STRICT
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ChuanqiXu9 wrote:

nit2: for CodeGen changes, it is better to add another check with `-disable-llvm-passes` to check the generated codes.

https://github.com/llvm/llvm-project/pull/165341