[K/Wasm] Reduce debug information for the internal Kotlin functions

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/BodyGenerator.kt

@@ -1022,6 +1022,6 @@ class BodyGenerator(
         return false
     }
 
-    private fun IrElement.getSourceLocation() = getSourceLocation(functionContext.currentFunction.fileOrNull?.fileEntry)
-    private fun IrElement.getSourceEndLocation() = getSourceLocation(functionContext.currentFunction.fileOrNull?.fileEntry, type = LocationType.END)
+    private fun IrElement.getSourceLocation() = getSourceLocation(functionContext.currentFunction.fileOrNull)
+    private fun IrElement.getSourceEndLocation() = getSourceLocation(functionContext.currentFunction.fileOrNull, type = LocationType.END)
 }

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/DeclarationGenerator.kt

@@ -471,7 +471,7 @@ class DeclarationGenerator(
                 initValue,
                 wasmExpressionGenerator,
                 context,
-                declaration.getSourceLocation(declaration.fileOrNull?.fileEntry)
+                declaration.getSourceLocation(declaration.fileOrNull)
             )
         } else {
             generateDefaultInitializerForType(wasmType, wasmExpressionGenerator)

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/locationUtils.kt

@@ -9,7 +9,9 @@ import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.IrFileEntry
 import org.jetbrains.kotlin.ir.LineAndColumn
 import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
+import org.jetbrains.kotlin.ir.declarations.IrFile
 import org.jetbrains.kotlin.ir.util.SYNTHETIC_OFFSET
+import org.jetbrains.kotlin.name.StandardClassIds
 import org.jetbrains.kotlin.wasm.ir.WasmExpressionBuilder
 import org.jetbrains.kotlin.wasm.ir.source.location.SourceLocation
 
@@ -30,7 +32,12 @@ enum class LocationType {
     abstract fun getLineAndColumnNumberFor(irElement: IrElement, fileEntry: IrFileEntry): LineAndColumn
 }
 
-fun IrElement.getSourceLocation(fileEntry: IrFileEntry?, type: LocationType = LocationType.START): SourceLocation {
+private val IrFile.isIgnoredFile: Boolean
+    get() = packageFqName.startsWith(StandardClassIds.BASE_KOTLIN_PACKAGE)
+
+fun IrElement.getSourceLocation(file: IrFile?, type: LocationType = LocationType.START): SourceLocation {
+    val fileEntry = file?.fileEntry
+
     if (fileEntry == null) return SourceLocation.NoLocation("fileEntry is null")
     if (hasSyntheticOrUndefinedLocation) return SourceLocation.NoLocation("Synthetic declaration")
 
@@ -39,6 +46,11 @@ fun IrElement.getSourceLocation(fileEntry: IrFileEntry?, type: LocationType = Lo
 
     if (line < 0 || column < 0) return SourceLocation.NoLocation("startLine or startColumn < 0")
 
+    if (file.isIgnoredFile) {
+        return SourceLocation.IgnoredLocation(path, line, column)
+    }
+
+
     return SourceLocation.Location(path, line, column)
 }
 

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/utils/SourceMapGenerator.kt

@@ -42,7 +42,7 @@ class SourceMapGenerator(
         val pathResolver =
             SourceFilePathResolver.create(sourceMapsInfo.sourceRoots, sourceMapsInfo.sourceMapPrefix, sourceMapsInfo.outputDir)
 
-        var prev: SourceLocation? = null
+        var prev: SourceLocation.Location? = null
         var prevGeneratedLine = 0
 
         for (mapping in sourceLocationMappings) {
@@ -59,7 +59,8 @@ class SourceMapGenerator(
             }
 
             when (sourceLocation) {
-                is SourceLocation.NoLocation -> sourceMapBuilder.addEmptyMapping(generatedLocation.column)
+                // TODO: add the ignored location into "ignoreList" in future
+                is SourceLocation.NoLocation, is SourceLocation.IgnoredLocation -> sourceMapBuilder.addEmptyMapping(generatedLocation.column)
                 is SourceLocation.Location -> {
                     sourceLocation.apply {
                         // TODO resulting path goes too deep since temporary directory we compiled first is deeper than final destination.