[llvm] [AMDGPU][InsertWaitCnts] Track global_wb/inv/wbinv (PR #135340)

[Pierre van Houtryve via llvm-commits]

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@@ -19,7 +19,7 @@ body: |
     ; GFX12-NEXT: {{  $}}
     ; GFX12-NEXT: renamable $vgpr0 = GLOBAL_LOAD_DWORD_SADDR renamable $sgpr2_sgpr3, killed $vgpr0, 0, 0, implicit $exec :: (load (s32), addrspace 1)
     ; GFX12-NEXT: GLOBAL_INV 16, implicit $exec
-    ; GFX12-NEXT: S_WAIT_LOADCNT 0
+    ; GFX12-NEXT: S_WAIT_LOADCNT 1
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Pierre-vh wrote:

Ah you are right, I misunderstood the documentation. It's indeed guaranteed to return in order.

https://github.com/llvm/llvm-project/pull/135340