[llvm] [AMDGPU] IGroupLP: Avoid DAG manipulation in greedyFind (PR #194827)

[Frederik Harwath via llvm-commits]

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@@ -495,12 +649,11 @@ void PipelineSolver::removeEdges(
     SUnit *Pred = PredSuccPair.first;
     SUnit *Succ = PredSuccPair.second;
 
-    auto *Match = llvm::find_if(
-        Succ->Preds, [&Pred](SDep &P) { return P.getSUnit() == Pred; });
-    if (Match != Succ->Preds.end()) {
-      assert(Match->isArtificial());
+    auto *Match = llvm::find_if(Succ->Preds, [&Pred](SDep &P) {
+      return P.getSUnit() == Pred && P.isArtificial();
+    });
+    if (Match != Succ->Preds.end())
       Succ->removePred(*Match);
-    }
   }
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frederik-h wrote:

This is the preexisting issue that was mentioned in the PR description. Fixing this is out of scope for this PR.

https://github.com/llvm/llvm-project/pull/194827