[clang] [CIR] Support inline C++ member function definitions (PR #142484)

[Erich Keane via cfe-commits]

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@@ -0,0 +1,72 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll
+// RUN: FileCheck --check-prefix=LLVM --input-file=%t-cir.ll %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll
+// RUN: FileCheck --check-prefix=OGCG --input-file=%t.ll %s
+
+struct S {
+  int Member;
+
+  int InlineFunc() {
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erichkeane wrote:

Can we have an `int InlineFunc2` that shows that it is NOT emitted, because it is not used?

https://github.com/llvm/llvm-project/pull/142484