[clang] [Clang] Emit type metadata on vtables when IRPGO instrumentation option is on. (PR #70841)

[Mingming Liu via cfe-commits]

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+// Test that type metadata are emitted with -fprofile-generate
+//
+// RUN: %clang -fprofile-generate -fno-lto -target x86_64-unknown-linux -emit-llvm -S %s -o - | FileCheck %s --check-prefix=ITANIUM
+// RUN: %clang -fprofile-generate -fno-lto -target x86_64-pc-windows-msvc -emit-llvm -S %s -o - | FileCheck %s --check-prefix=MS
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minglotus-6 wrote:

This test is forked from https://github.com/llvm/llvm-project/blob/main/clang/test/CodeGenCXX/type-metadata.cpp.

It's currently put under directory clang/test/Driver since `-fprofile-generate` is a driver option.

I'm wondering if it's more idiomatic to create the corresponding clang compiler options for `-fprofile-generate` for what I'm trying to do here? That way I could update `clang/test/CodeGenCXX/type-metadata.cpp` for test coverage.

https://github.com/llvm/llvm-project/pull/70841