[llvm] [AMDGPU] Restore non-buffer atomic tests lost in #93801 (PR #94978)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,77 @@
+; RUN: llc < %s -mtriple=amdgcn -mcpu=gfx908 -verify-machineinstrs -amdgpu-atomic-optimizer-strategy=DPP | FileCheck %s -check-prefix=GCN
+; RUN: llc < %s -mtriple=amdgcn -mcpu=gfx90a -verify-machineinstrs -amdgpu-atomic-optimizer-strategy=DPP | FileCheck %s -check-prefix=GCN
+
+declare float @llvm.amdgcn.global.atomic.fadd.f32.p1.f32(ptr addrspace(1), float)
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arsenm wrote:

Add global to file name 

https://github.com/llvm/llvm-project/pull/94978