[llvm] [AMDGPU] Add VDSDIR instructions for GFX12 (PR #75197)

[Carl Ritson via llvm-commits]

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@@ -1129,6 +1129,8 @@ def exp_tgt : CustomOperand<i32, 0, "ExpTgt">;
 
 def wait_vdst : NamedIntOperand<i8, "wait_vdst", "WaitVDST">;
 def wait_exp : NamedIntOperand<i8, "wait_exp", "WaitEXP">;
+def WaitVAVDst : NamedIntOperand<i8, "wait_va_vdst">;
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perlfu wrote:

For what it's worth, I think the definitions here should probably match the SP3 names, so `wait_va_vdst` and `wait_vm_vsrc`.

https://github.com/llvm/llvm-project/pull/75197