[llvm] [GlobalISel] Change MatchTable entries to 1 byte each (PR #74429)

[Wang Pengcheng via llvm-commits]

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@@ -137,7 +189,9 @@ void MatchTableRecord::emit(raw_ostream &OS, bool LineBreakIsNextAfterThis,
   if (Flags & MTRF_JumpTarget) {
     if (Flags & MTRF_Comment)
       OS << " ";
-    OS << Table.getLabelIndex(LabelID);
+    // TODO: Could encode this AOT to speed up build of generated file
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wangpc-pp wrote:

Oh, you have added a TODO. :-)

https://github.com/llvm/llvm-project/pull/74429