[clang] [CIR] Add CIRGenerator and plug it via CIRGenAction (PR #90831)

[Bruno Cardoso Lopes via cfe-commits]

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@@ -0,0 +1,5 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s | FileCheck %s
+
+// CHECK: CIRGenModule::buildTopLevelDecl
+
+void foo() {}
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bcardosolopes wrote:

Oh, I see what you are doing. I was thinking even more simple, no code, just an empty file without invoking FileCheck. So you can remove the printing hack. Before this PR, calling into `-emit-cir` would crash, so the idea of the simple test is to just make sure it doesn't anymore.

https://github.com/llvm/llvm-project/pull/90831