diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/MemberCodegen.java b/compiler/backend/src/org/jetbrains/kotlin/codegen/MemberCodegen.java
index 359a41f9517..5a5c9ad8615 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/MemberCodegen.java
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/MemberCodegen.java
@@ -86,7 +86,8 @@ public abstract class MemberCodegen<T extends KtElement/* TODO: & JetDeclaration
     protected ExpressionCodegen clInit;
     private NameGenerator inlineNameGenerator;
 
-    private SourceMapper sourceMapper;
+    private DefaultSourceMapper sourceMapper;
+
     private final ConstantExpressionEvaluator constantExpressionEvaluator;
 
     public MemberCodegen(
@@ -557,7 +558,7 @@ public abstract class MemberCodegen<T extends KtElement/* TODO: & JetDeclaration
     }
 
     @NotNull
-    public SourceMapper getOrCreateSourceMapper() {
+    public DefaultSourceMapper getOrCreateSourceMapper() {
         if (sourceMapper == null) {
             sourceMapper = new DefaultSourceMapper(SourceInfo.Companion.createInfo(element, getClassName()));
         }
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegen.java b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegen.java
index 635d6e3df49..4a377ab2cea 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegen.java
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegen.java
@@ -28,6 +28,7 @@ import org.jetbrains.kotlin.builtins.BuiltInsPackageFragment;
 import org.jetbrains.kotlin.codegen.*;
 import org.jetbrains.kotlin.codegen.context.*;
 import org.jetbrains.kotlin.codegen.inline2.*;
+import org.jetbrains.kotlin.codegen.inline2.DefaultSourceMapper;
 import org.jetbrains.kotlin.codegen.inline2.NestedSourceMapper;
 import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicArrayConstructorsKt;
 import org.jetbrains.kotlin.codegen.state.GenerationState;
@@ -352,6 +353,8 @@ public class InlineCodegen extends CallGenerator {
     }
 
     private InlineResult inlineCall(SMAPAndMethodNode nodeAndSmap) {
+        DefaultSourceMapper defaultSourceMapper = codegen.getParentCodegen().getOrCreateSourceMapper();
+        defaultSourceMapper.setCallSiteMarker(new CallSiteMarker(codegen.getLastLineNumber()));
         MethodNode node = nodeAndSmap.getNode();
         ReifiedTypeParametersUsages reificationResult = reifiedTypeInliner.reifyInstructions(node);
         generateClosuresBodies();
@@ -402,6 +405,8 @@ public class InlineCodegen extends CallGenerator {
 
         addInlineMarker(codegen.v, false);
 
+        defaultSourceMapper.setCallSiteMarker(null);
+
         return result;
     }
 
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt
index 9ad5fb03133..b1b69aea6f7 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt
@@ -19,6 +19,7 @@ package org.jetbrains.kotlin.codegen.inline
 import gnu.trove.TIntIntHashMap
 import org.jetbrains.kotlin.codegen.ClassBuilder
 import org.jetbrains.kotlin.codegen.SourceInfo
+import org.jetbrains.kotlin.codegen.inline2.CallSiteMarker
 import org.jetbrains.org.objectweb.asm.Label
 import org.jetbrains.org.objectweb.asm.MethodVisitor
 import java.util.*
@@ -29,10 +30,10 @@ class SMAPBuilder(
         val path: String,
         val fileMappings: List<FileMapping>
 ) {
-    private val header = "SMAP\n$source\nKotlin\n*S Kotlin"
+    private val header = "SMAP\n$source\nKotlin"
 
     fun build(): String? {
-        var realMappings = fileMappings.filter {
+        val realMappings = fileMappings.filter {
             val mappings = it.lineMappings
             mappings.isNotEmpty() && mappings.first() != RangeMapping.SKIP
         }
@@ -41,10 +42,32 @@ class SMAPBuilder(
             return null
         }
 
+        val defaultStrata = generateDefaultStrata(realMappings)
+        val debugStrata = generateDebugStrata(realMappings)
+
+        return "$header\n$defaultStrata$debugStrata"
+    }
+
+    private fun generateDefaultStrata(realMappings: List<FileMapping>): String {
         val fileIds = "*F" + realMappings.mapIndexed { id, file -> "\n${file.toSMAPFile(id + 1)}" }.joinToString("")
         val lineMappings = "*L" + realMappings.joinToString("") { it.toSMAPMapping() }
+        return "*S Kotlin\n$fileIds\n$lineMappings\n*E\n"
+    }
 
-        return "$header\n$fileIds\n$lineMappings\n*E\n"
+    private fun generateDebugStrata(realMappings: List<FileMapping>): String {
+        val combinedMapping = FileMapping(source, path)
+        realMappings.forEach { fileMapping ->
+            fileMapping.lineMappings.filter { it.callSiteMarker != null }.forEach { rangeMapping ->
+                combinedMapping.addRangeMapping(RangeMapping(rangeMapping.callSiteMarker!!.lineNumber, rangeMapping.dest, rangeMapping.range))
+            }
+        }
+
+        if (combinedMapping.lineMappings.isEmpty()) return ""
+
+        val newMappings = listOf(combinedMapping)
+        val fileIds = "*F" + newMappings.mapIndexed { id, file -> "\n${file.toSMAPFile(id + 1)}" }.joinToString("")
+        val lineMappings = "*L" + newMappings.joinToString("") { it.toSMAPMapping() }
+        return "*S KotlinDebug\n$fileIds\n$lineMappings\n*E\n"
     }
 
     private fun RangeMapping.toSMAP(fileId: Int): String {
@@ -145,9 +168,7 @@ interface SourceMapper {
 
     companion object {
         fun flushToClassBuilder(mapper: SourceMapper, v: ClassBuilder) {
-            for (fileMapping in mapper.resultMappings) {
-                v.addSMAP(fileMapping)
-            }
+            mapper.resultMappings.forEach { fileMapping -> v.addSMAP(fileMapping) }
         }
 
         fun createFromSmap(smap: SMAP): SourceMapper {
@@ -333,7 +354,7 @@ open class FileMapping(val name: String, val path: String) {
 }
 
 //TODO comparable
-data class RangeMapping(val source: Int, val dest: Int, var range: Int = 1) {
+data class RangeMapping(val source: Int, val dest: Int, var range: Int = 1, var callSiteMarker: CallSiteMarker? = null) {
     var parent: FileMapping? = null
     private val skip = source == -1 && dest == -1
 
@@ -370,3 +391,6 @@ data class RangeMapping(val source: Int, val dest: Int, var range: Int = 1) {
         val SKIP = RangeMapping(-1, -1, 1)
     }
 }
+
+val RangeMapping.toRange: IntRange
+    get() = this.dest..this.maxDest
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP2.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP2.kt
index c3c50c97569..d0abae6ebc0 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP2.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP2.kt
@@ -26,6 +26,9 @@ import org.jetbrains.org.objectweb.asm.Label
 import org.jetbrains.org.objectweb.asm.MethodVisitor
 import java.util.*
 
+
+class CallSiteMarker(val lineNumber: Int)
+
 open class NestedSourceMapper(
         override val parent: SourceMapper, val ranges: List<RangeMapping>, sourceInfo: SourceInfo
 ) : DefaultSourceMapper(sourceInfo) {
@@ -86,6 +89,12 @@ open class DefaultSourceMapper @JvmOverloads constructor(
         protected var maxUsedValue: Int = sourceInfo.linesInFile
 ) : SourceMapper {
 
+    var callSiteMarker: CallSiteMarker? = null;
+        set(value) {
+            lastMappedWithChanges = null
+            field = value
+        }
+
     var lastVisited: RawFileMapping? = null
     private var lastMappedWithChanges: RawFileMapping? = null
     private var fileMappings: LinkedHashMap<String, RawFileMapping> = linkedMapOf()
@@ -139,8 +148,7 @@ open class DefaultSourceMapper @JvmOverloads constructor(
 
     protected fun createMapping(lineNumber: Int): Int {
         val fileMapping = lastVisited!!
-        //val mappedLineIndex = fileMapping.mapLine(lineNumber, maxUsedValue, lastMappedWithChanges == lastVisited)
-        val mappedLineIndex = fileMapping.mapNewLineNumber(lineNumber, maxUsedValue, lastMappedWithChanges == lastVisited)
+        val mappedLineIndex = fileMapping.mapNewLineNumber(lineNumber, maxUsedValue, lastMappedWithChanges == lastVisited, callSiteMarker)
         if (mappedLineIndex > maxUsedValue) {
             lastMappedWithChanges = fileMapping
             maxUsedValue = mappedLineIndex
@@ -167,7 +175,7 @@ class RawFileMapping(val name: String, val path: String) {
         lastMappedWithNewIndex = end
     }
 
-    fun mapNewLineNumber(source: Int, currentIndex: Int, isLastMapped: Boolean): Int {
+    fun mapNewLineNumber(source: Int, currentIndex: Int, isLastMapped: Boolean, callSiteMarker: CallSiteMarker?): Int {
         val dest: Int
         val rangeMapping: RangeMapping
         if (rangeMappings.isNotEmpty() && isLastMapped && couldFoldInRange(lastMappedWithNewIndex, source)) {
@@ -177,7 +185,7 @@ class RawFileMapping(val name: String, val path: String) {
         }
         else {
             dest = currentIndex + 1
-            rangeMapping = RangeMapping(source, dest)
+            rangeMapping = RangeMapping(source, dest, callSiteMarker = callSiteMarker)
             rangeMappings.add(rangeMapping)
         }
 
diff --git a/compiler/tests-common/org/jetbrains/kotlin/codegen/SMAPTestUtil.kt b/compiler/tests-common/org/jetbrains/kotlin/codegen/SMAPTestUtil.kt
index 572a10468bb..9889d57ca0b 100644
--- a/compiler/tests-common/org/jetbrains/kotlin/codegen/SMAPTestUtil.kt
+++ b/compiler/tests-common/org/jetbrains/kotlin/codegen/SMAPTestUtil.kt
@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.backend.common.output.OutputFile
 import org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil
 import org.jetbrains.kotlin.codegen.inline.RangeMapping
 import org.jetbrains.kotlin.codegen.inline.SMAPParser
+import org.jetbrains.kotlin.codegen.inline.toRange
 import org.jetbrains.kotlin.utils.keysToMap
 import org.jetbrains.org.objectweb.asm.ClassReader
 import org.jetbrains.org.objectweb.asm.ClassVisitor
@@ -121,6 +122,3 @@ object SMAPTestUtil {
         }
     }
 }
-
-val RangeMapping.toRange: IntRange
-           get() = this.dest..this.maxDest