[clang] [CIR] Fixup type of no-prototype functions when emitting an alias. (PR #212308)

[Erich Keane via cfe-commits]

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@@ -49,6 +67,18 @@ extern void weak_func_alias(void) __attribute__((weak, alias("weak_func_target")
 // CIR-DAG: cir.func weak @weak_func_alias() alias(@weak_func_target)
 // CIR-DAG: cir.func dso_local @test13_alias(!u32i) alias(@test13)
 
+// CIR-DAG: cir.get_global @noproto_used : !cir.ptr<!cir.func<() -> !s32i>>
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erichkeane wrote:

Ok, I just decided to split the whole test out into its own file, it was getting way too confusing what was happening in that file with everything else around it.

Note that I mentioned it in the commit message, but decided to capture the difference in our lowering of variadic functions here: https://github.com/llvm/llvm-project/issues/213024

I expect whoever fixes that will be able to get the OGCG out of this test.

https://github.com/llvm/llvm-project/pull/212308