[llvm] [GlobalOpt] Preserve Address Space when recreating GV (PR #171211)

[Matt Arsenault via llvm-commits]

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@@ -8,9 +8,9 @@
 @_ZM2C = internal addrspace(1) global %struct.FakeDeviceGlobal zeroinitializer, align 8
 @_ZL1C = internal addrspace(1) global %struct.FakeDeviceGlobal zeroinitializer, align 8
 
- at llvm.compiler.used = appending global [2 x ptr addrspace(4)] [ptr addrspace(4) addrspacecast (ptr addrspace(1) @_ZM2C to ptr addrspace(4)), ptr addrspace(4) addrspacecast (ptr addrspace(1) @_ZL1C to ptr addrspace(4))]
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arsenm wrote:

I would introduce a separate test for this, instead of modifying this existing one 

https://github.com/llvm/llvm-project/pull/171211