Avoid running PickleQuotes when possible

Author: nicolasstucki

compiler/src/dotty/tools/dotc/transform/Inlining.scala

@@ -91,8 +91,8 @@ class Inlining extends MacroTransform {
           if tree1.tpe.isError then tree1
           else Inliner.inlineCall(tree1)
         case _: GenericApply if tree.symbol.isQuote =>
-          ctx.compilationUnit.needsStaging = true
-          ctx.compilationUnit.needsQuotePickling = true
+          if level == 0 then
+            ctx.compilationUnit.needsQuotePickling = true
           super.transform(tree)(using StagingContext.quoteContext)
         case _: GenericApply if tree.symbol.isExprSplice =>
           super.transform(tree)(using StagingContext.spliceContext)

compiler/src/dotty/tools/dotc/typer/Inliner.scala

@@ -1294,7 +1294,6 @@ class Inliner(call: tpd.Tree, rhsToInline: tpd.Tree)(using Context) {
           inlineIfIsNestedInlineCall(res)
       }
       if res.symbol == defn.QuotedRuntime_exprQuote then
-        ctx.compilationUnit.needsStaging = true
         ctx.compilationUnit.needsQuotePickling = true
       res