FIR: report lowering time from JvmIrCodegenFactory

compiler/cli/src/org/jetbrains/kotlin/cli/common/CommonCompilerPerformanceManager.kt

@@ -22,6 +22,7 @@ abstract class CommonCompilerPerformanceManager(private val presentableName: Str
     private var startGCData = mutableMapOf<String, GCData>()
 
     private var irTranslationStart: Long = 0
+    private var irLoweringStart: Long = 0
     private var irGenerationStart: Long = 0
 
     private var targetDescription: String? = null
@@ -88,6 +89,19 @@ abstract class CommonCompilerPerformanceManager(private val presentableName: Str
         )
     }
 
+    open fun notifyIRLoweringStarted() {
+        irLoweringStart = PerformanceCounter.currentTime()
+    }
+
+    open fun notifyIRLoweringFinished() {
+        val time = deltaTime(irLoweringStart)
+        measurements += IRMeasurement(
+            lines,
+            TimeUnit.NANOSECONDS.toMillis(time),
+            IRMeasurement.Kind.LOWERING
+        )
+    }
+
     open fun notifyIRGenerationStarted() {
         irGenerationStart = PerformanceCounter.currentTime()
     }

compiler/cli/src/org/jetbrains/kotlin/cli/common/performanceMeasurements.kt

@@ -37,7 +37,7 @@ class IRMeasurement(val lines: Int?, val milliseconds: Long, val kind: Kind) : P
     override fun render(): String = formatMeasurement("IR $kind", milliseconds, lines)
 
     enum class Kind {
-        TRANSLATION, GENERATION
+        TRANSLATION, LOWERING, GENERATION
     }
 }
 

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinToJVMBytecodeCompiler.kt

@@ -387,10 +387,14 @@ object KotlinToJVMBytecodeCompiler {
 
             ProgressIndicatorAndCompilationCanceledStatus.checkCanceled()
 
-            performanceManager?.notifyIRGenerationStarted()
+            performanceManager?.notifyIRLoweringStarted()
             generationState.beforeCompile()
             codegenFactory.generateModuleInFrontendIRMode(
-                generationState, moduleFragment, symbolTable, sourceManager, extensions, FirJvmBackendExtension(session, components)
+                generationState, moduleFragment, symbolTable, sourceManager, extensions, FirJvmBackendExtension(session, components),
+                {
+                    performanceManager?.notifyIRLoweringFinished()
+                    performanceManager?.notifyIRGenerationStarted()
+                }
             )
             CodegenFactory.doCheckCancelled(generationState)
             generationState.factory.done()