[llvm] [AMDGPU][NFCI] Refactor BUFInstructions.td (PR #65746)

[Matt Arsenault via llvm-commits]

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@@ -572,18 +572,25 @@ class MUBUF_Store_Pseudo <string opName,
   let tfe = isTFE;
 }
 
+multiclass MUBUF_Pseudo_Store_Pats<string BaseInst, ValueType store_vt = i32, SDPatternOperator st = null_frag> {
+
+  def _OFFSET : GCNPat <
+    (st store_vt:$vdata, (MUBUFOffset v4i32:$srsrc, i32:$soffset, i32:$offset)),
+    (!cast<MUBUF_Pseudo>(BaseInst # _OFFSET) store_vt:$vdata, v4i32:$srsrc, i32:$soffset, i32:$offset)>;
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arsenm wrote:

This also makes it easier to fix arbitrary types for the mubuf global path 

https://github.com/llvm/llvm-project/pull/65746