Use SYNTHETIC_OFFSET for declarations created in IR

Native compiler doesn't support new declarations created with UNDEFINED_OFFSET, they should use SYNTHETIC_OFFSET instead (based on the data class gen). This change adds these offsets to declarations created by Compose plugin.

Change-Id: I910294269466da61740ceea0372abee12de07c4a

diff --git a/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/AbstractComposeLowering.kt b/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/AbstractComposeLowering.kt
index 49c690a..09d2ab6 100644
--- a/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/AbstractComposeLowering.kt
+++ b/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/AbstractComposeLowering.kt

@@ -127,6 +127,7 @@
 import org.jetbrains.kotlin.ir.types.typeWith
 import org.jetbrains.kotlin.ir.util.ConstantValueGenerator
 import org.jetbrains.kotlin.ir.util.DeepCopySymbolRemapper
+import org.jetbrains.kotlin.ir.util.SYNTHETIC_OFFSET
 import org.jetbrains.kotlin.ir.util.TypeTranslator
 import org.jetbrains.kotlin.ir.util.functions
 import org.jetbrains.kotlin.ir.util.getArguments
@@ -920,17 +921,19 @@
         isVar: Boolean = false,
         origin: IrDeclarationOrigin = IrDeclarationOrigin.IR_TEMPORARY_VARIABLE
     ): IrVariableImpl {
+        val descriptor = WrappedVariableDescriptor()
         return IrVariableImpl(
             value.startOffset,
             value.endOffset,
             origin,
-            IrVariableSymbolImpl(WrappedVariableDescriptor()),
+            IrVariableSymbolImpl(descriptor),
             Name.identifier(name),
             irType,
             isVar,
             false,
             false
         ).apply {
+            descriptor.bind(this)
             initializer = value
         }
     }
@@ -1044,6 +1047,8 @@
 
     fun makeStabilityField(): IrField {
         return context.irFactory.buildField {
+            startOffset = SYNTHETIC_OFFSET
+            endOffset = SYNTHETIC_OFFSET
             name = KtxNameConventions.STABILITY_FLAG
             isStatic = true
             isFinal = true

diff --git a/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/ComposerLambdaMemoization.kt b/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/ComposerLambdaMemoization.kt
index fd62c1c..a598c6b 100644
--- a/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/ComposerLambdaMemoization.kt
+++ b/compose/compiler/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/ComposerLambdaMemoization.kt

@@ -77,6 +77,7 @@
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.util.DeepCopySymbolRemapper
+import org.jetbrains.kotlin.ir.util.SYNTHETIC_OFFSET
 import org.jetbrains.kotlin.ir.util.defaultType
 import org.jetbrains.kotlin.ir.util.isLocal
 import org.jetbrains.kotlin.ir.util.patchDeclarationParents
@@ -266,6 +267,8 @@
         val filePath = declaration.fileEntry.name
         val fileName = filePath.split('/').last()
         val current = context.irFactory.buildClass {
+            startOffset = SYNTHETIC_OFFSET
+            endOffset = SYNTHETIC_OFFSET
             kind = ClassKind.OBJECT
             visibility = DescriptorVisibilities.INTERNAL
             val shortName = PackagePartClassUtils.getFilePartShortName(fileName)
@@ -549,6 +552,8 @@
             visibility = DescriptorVisibilities.INTERNAL
         }.also { p ->
             p.backingField = context.irFactory.buildField {
+                startOffset = SYNTHETIC_OFFSET
+                endOffset = SYNTHETIC_OFFSET
                 name = Name.identifier(lambdaName)
                 type = lambdaType
                 visibility = DescriptorVisibilities.INTERNAL