Skip generating debug info for deduplicated nodes (#118671)

MichalStrehovsky · web-flow · commit f2fadd85cd89 · 2025-08-13T23:22:28.000+02:00
diff --git a/src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/ObjectWriter/ObjectWriter.cs b/src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/ObjectWriter/ObjectWriter.cs
@@ -517,6 +517,13 @@ private void EmitObject(string objectFilePath, IReadOnlyCollection<DependencyNod
                         continue;
                     }
 
+                    ISymbolNode symbolNode = node as ISymbolNode;
+                    ISymbolNode deduplicatedSymbolNode = _nodeFactory.ObjectInterner.GetDeduplicatedSymbol(_nodeFactory, symbolNode);
+                    if (deduplicatedSymbolNode != symbolNode)
+                    {
+                        continue;
+                    }
+
                     // Ensure any allocated MethodTables have debug info
                     if (node is ConstructedEETypeNode methodTable)
                     {

Original file line number	Diff line number	Diff line change
`@@ -517,6 +517,13 @@ private void EmitObject(string objectFilePath, IReadOnlyCollection<DependencyNod`
`517`	`517`	`continue;`
`518`	`518`	`}`
`519`	`519`
	`520`	`+ ISymbolNode symbolNode = node as ISymbolNode;`
	`521`	`+ ISymbolNode deduplicatedSymbolNode = _nodeFactory.ObjectInterner.GetDeduplicatedSymbol(_nodeFactory, symbolNode);`
	`522`	`+ if (deduplicatedSymbolNode != symbolNode)`
	`523`	`+ {`
	`524`	`+ continue;`
	`525`	`+ }`
	`526`	`+`
`520`	`527`	`// Ensure any allocated MethodTables have debug info`
`521`	`528`	`if (node is ConstructedEETypeNode methodTable)`
`522`	`529`	`{`