[IR] Move some inline utils from backend.common into ir.util

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/IrInlineUtils.kt

@@ -127,31 +127,6 @@ fun IrInlinable.inline(target: IrDeclarationParent, arguments: List<IrValueDecla
         }
     }
 
-val IrInlinedFunctionBlock.inlineDeclaration: IrDeclaration
-    get() = when (val element = inlinedElement) {
-        is IrFunction -> element
-        is IrFunctionExpression -> element.function
-        is IrFunctionReference -> element.symbol.owner
-        is IrPropertyReference -> element.symbol.owner
-        else -> throw AssertionError("Not supported ir element for inlining ${element.dump()}")
-    }
-
-private val IrInlinedFunctionBlock.inlineFunction: IrFunction?
-    get() = when (val element = inlinedElement) {
-        is IrFunction -> element
-        is IrFunctionExpression -> element.function
-        is IrFunctionReference -> element.symbol.owner.takeIf { it.isInline }
-        else -> null
-    }
-
-fun IrInlinedFunctionBlock.isFunctionInlining(): Boolean {
-    return this.inlinedElement is IrFunction
-}
-
-fun IrInlinedFunctionBlock.isLambdaInlining(): Boolean {
-    return !isFunctionInlining()
-}
-
 fun IrInlinedFunctionBlock.getAdditionalStatementsFromInlinedBlock(): List<IrStatement> {
     return this.statements
         .filterIsInstance<IrComposite>()
@@ -198,11 +173,3 @@ fun IrInlinedFunctionBlock.putStatementsInFrontOfInlinedFunction(statements: Lis
     this.statements.addAll(if (insertAfter == -1) 0 else insertAfter + 1, statements)
 }
 
-val IrContainerExpression.innerInlinedBlockOrThis: IrContainerExpression
-    get() = (this as? IrReturnableBlock)?.statements?.singleOrNull() as? IrInlinedFunctionBlock ?: this
-
-val IrReturnableBlock.inlineFunction: IrFunction?
-    get() = (this.statements.singleOrNull() as? IrInlinedFunctionBlock)?.inlineFunction
-
-val IrReturnableBlock.sourceFileSymbol: IrFileSymbol?
-    get() = inlineFunction?.fileOrNull?.symbol

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/IrUtils.kt

@@ -17,6 +17,7 @@ import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.types.isUnit
 import org.jetbrains.kotlin.ir.types.typeWith
 import org.jetbrains.kotlin.ir.util.dump
+import org.jetbrains.kotlin.ir.util.inlineFunction
 import org.jetbrains.kotlin.ir.util.statements
 
 fun IrReturnTarget.returnType(context: CommonBackendContext) =

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/AbstractValueUsageTransformer.kt

@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.backend.common.lower
 
-import org.jetbrains.kotlin.backend.common.ir.innerInlinedBlockOrThis
+import org.jetbrains.kotlin.ir.util.innerInlinedBlockOrThis
 import org.jetbrains.kotlin.ir.IrBuiltIns
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.declarations.*

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/InventNamesForLocalClasses.kt

@@ -9,7 +9,7 @@ import org.jetbrains.kotlin.backend.common.FileLoweringPass
 import org.jetbrains.kotlin.backend.common.ir.getAdditionalStatementsFromInlinedBlock
 import org.jetbrains.kotlin.backend.common.ir.getNonDefaultAdditionalStatementsFromInlinedBlock
 import org.jetbrains.kotlin.backend.common.ir.getOriginalStatementsFromInlinedBlock
-import org.jetbrains.kotlin.backend.common.ir.isFunctionInlining
+import org.jetbrains.kotlin.ir.util.isFunctionInlining
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.expressions.*

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt

@@ -8,7 +8,7 @@ package org.jetbrains.kotlin.backend.common.lower
 import org.jetbrains.kotlin.backend.common.BodyLoweringPass
 import org.jetbrains.kotlin.backend.common.CommonBackendContext
 import org.jetbrains.kotlin.backend.common.descriptors.synthesizedString
-import org.jetbrains.kotlin.backend.common.ir.isFunctionInlining
+import org.jetbrains.kotlin.ir.util.isFunctionInlining
 import org.jetbrains.kotlin.backend.common.lower.inline.isInlineParameter
 import org.jetbrains.kotlin.backend.common.runOnFilePostfix
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities