[llvm] [llvm] don't merge constants with COMDAT (PR #192477)

[Fangrui Song via llvm-commits]

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@@ -92,3 +92,22 @@ define void @test5(ptr %P1, ptr %P2) {
         store ptr @T5ua, ptr %P2
         ret void
 }
+
+$test6a = comdat any
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MaskRay wrote:

Also add comment here. Not immediately obvious

https://github.com/llvm/llvm-project/pull/192477