[clang] [CIR] Cleanup support for C functions (PR #136854)

[Andy Kaylor via cfe-commits]

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@@ -233,6 +233,19 @@ int f8(int *p) {
 // OGCG:   %[[P2:.*]] = load ptr, ptr %[[P_PTR]], align 8
 // OGCG:   %[[STAR_P:.*]] = load i32, ptr %[[P2]], align 4
 
+
+void f9() {}
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andykaylor wrote:

It seems like a lot of code was added compared to what is covered by this test. Do we have tests for any of the additional functionality?

https://github.com/llvm/llvm-project/pull/136854