Don't mark compiler-created PSI elements as generated

This saves some memory on storing the generated flag in the PsiElement
userdata and time required to store the flag.

compiler/backend/src/org/jetbrains/kotlin/codegen/ExpressionCodegen.java

@@ -4885,7 +4885,7 @@ The "returned" value of try expression with no finally is either the last expres
     }
 
     private Call makeFakeCall(ReceiverValue initializerAsReceiver) {
-        KtSimpleNameExpression fake = KtPsiFactoryKt.KtPsiFactory(state.getProject()).createSimpleName("fake");
+        KtSimpleNameExpression fake = KtPsiFactoryKt.KtPsiFactory(state.getProject(), false).createSimpleName("fake");
         return CallMaker.makeCall(fake, initializerAsReceiver);
     }
 

compiler/backend/src/org/jetbrains/kotlin/codegen/FunctionReferenceGenerationStrategy.java

@@ -173,7 +173,7 @@ public class FunctionReferenceGenerationStrategy extends FunctionGenerationStrat
     ) {
         if (receiver == null) return null;
 
-        KtExpression receiverExpression = KtPsiFactoryKt.KtPsiFactory(state.getProject()).createExpression("callableReferenceFakeReceiver");
+        KtExpression receiverExpression = KtPsiFactoryKt.KtPsiFactory(state.getProject(), false).createExpression("callableReferenceFakeReceiver");
         codegen.tempVariables.put(receiverExpression, receiverParameterStackValue(signature, codegen));
         return ExpressionReceiver.Companion.create(receiverExpression, receiver.getType(), BindingContext.EMPTY);
     }

compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/coroutineCodegenUtil.kt

@@ -137,7 +137,7 @@ fun ResolvedCall<*>.replaceSuspensionFunctionWithRealDescriptor(
         newCall.recordValueArgument(newCandidateDescriptor.valueParameters[it.key.index], it.value)
     }
 
-    val psiFactory = KtPsiFactory(project)
+    val psiFactory = KtPsiFactory(project, markGenerated = false)
     val arguments = psiFactory.createCallArguments("(this)").arguments.single()
     val thisExpression = arguments.getArgumentExpression()!!
     newCall.recordValueArgument(