[clang] [libc] [llvm] [AMDGPU] Use COV6 by default (PR #118515)

[Matt Arsenault via cfe-commits]

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@@ -0,0 +1,7 @@
+; RUN: llc -mtriple=amdgcn-amd-amdhsa %s -o - | FileCheck %s
+
+; CHECK: .amdhsa_code_object_version 6
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arsenm wrote:

It seems we have no other tests checking this field, which seems hard to believe. We probably should have one that tests it with explicit flags etc. 

https://github.com/llvm/llvm-project/pull/118515