[llvm] [AMDGPU][MC] Allow UC_VERSION_* constant reuse (PR #96461)

[Carl Ritson via llvm-commits]

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@@ -0,0 +1,41 @@
+// RUN: llvm-mc -triple=amdgcn -show-encoding -mcpu=gfx1010 %s | FileCheck --check-prefix=GFX10 %s
+
+// Test that UC_VERSION* symbols can be redefined.
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perlfu wrote:

This test would pass with or without the code change.
If we think it is useful to check then I can add it back.

https://github.com/llvm/llvm-project/pull/96461