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

wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/source/location/SourceLocation.kt

@@ -11,6 +11,8 @@ sealed class SourceLocation {
     // Both line and column are zero-based
     data class Location(val file: String, val line: Int, val column: Int) : SourceLocation()
 
+    data class IgnoredLocation(val file: String, val line: Int, val column: Int) : SourceLocation()
+
     companion object {
         @Suppress("FunctionName", "UNUSED_PARAMETER")
         fun NoLocation(description: String): SourceLocation = NoLocation

wasm/wasm.tests/test/org/jetbrains/kotlin/wasm/test/handlers/WasmDebugRunner.kt

@@ -131,7 +131,8 @@ class WasmDebugRunner(testServices: TestServices) : AbstractWasmArtifactsCollect
                     toolArgs = listOf("--enable-inspector", "--allow-natives-syntax")
                 )
                 val debuggerSteps = FrameParser(result).parse().mapNotNull { frame ->
-                    val pausedLocation = sourceMap.segmentForGeneratedLocation(frame.pausedLocation.line, frame.pausedLocation.column)
+                    val pausedLocation = sourceMap
+                        .findSegmentForTheGeneratedLocation(frame.pausedLocation.line, frame.pausedLocation.column)
                         ?.takeIf { it.sourceLineNumber >= 0 }
 
                     pausedLocation?.sourceFileName?.let { sourceFileName ->
@@ -179,6 +180,14 @@ class WasmDebugRunner(testServices: TestServices) : AbstractWasmArtifactsCollect
         writeToFilesAndRunTest("dce", artifacts.compilerResultWithDCE)
     }
 
+    private fun SourceMap.findSegmentForTheGeneratedLocation(lineNumber: Int, columnNumber: Int): SourceMapSegment? {
+        val group = groups.getOrNull(lineNumber)?.takeIf { it.segments.isNotEmpty() } ?: return null
+        return group.segments
+            .indexOfLast { columnNumber >= it.generatedColumnNumber }
+            .takeIf { it >= 0 }
+            ?.let(group.segments::get)
+    }
+
     private val WasmCompilerResult.parsedSourceMaps: SourceMap
         get() = when (val parseResult = SourceMapParser.parse(debugInformation?.sourceMapForBinary ?: error("Expect to have source maps for stepping test"))) {
             is SourceMapSuccess -> parseResult.value