[llvm] [llvm/llvm-project][Coroutines] Improve debugging and minor refactoring (PR #104642)

[Tyler Nowicki via llvm-commits]

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@@ -418,10 +440,7 @@ struct RematGraph {
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
   void dump() const {
     dbgs() << "Entry (";
-    if (EntryNode->Node->getParent()->hasName())
-      dbgs() << EntryNode->Node->getParent()->getName();
-    else
-      EntryNode->Node->getParent()->printAsOperand(dbgs(), false);
+    dbgs() << getBasicBlockLabel(EntryNode->Node->getParent());
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TylerNowicki wrote:

@yuxuanchen1997 I restricted use of getBasicBlockName to dump methods. Please notice that similar code already appeared in the dump method for RematGraph.

https://github.com/llvm/llvm-project/pull/104642