From c817ae9f4e307144061b6f7b8d0690a8472b558c Mon Sep 17 00:00:00 2001
From: Igor Chevdar <igor.chevdar@jetbrains.com>
Date: Thu, 13 Aug 2020 12:06:38 +0500
Subject: [PATCH] [IR] Adopted common constants folding lowering

---
 .../jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt  | 7 +++++++
 .../org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt
index cdfe54419d0..7c859edddb2 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/KonanLoweringPhases.kt
@@ -7,6 +7,7 @@ import org.jetbrains.kotlin.backend.common.lower.inline.LocalClassesExtractionFr
 import org.jetbrains.kotlin.backend.common.lower.inline.LocalClassesInInlineFunctionsLowering
 import org.jetbrains.kotlin.backend.common.lower.inline.LocalClassesInInlineLambdasLowering
 import org.jetbrains.kotlin.backend.common.lower.loops.ForLoopsLowering
+import org.jetbrains.kotlin.backend.common.lower.optimizations.FoldConstantLowering
 import org.jetbrains.kotlin.backend.common.phaser.*
 import org.jetbrains.kotlin.backend.konan.lower.*
 import org.jetbrains.kotlin.backend.konan.lower.FinallyBlocksLowering
@@ -352,4 +353,10 @@ internal val ifNullExpressionsFusionPhase = makeKonanFileLoweringPhase(
         ::IfNullExpressionsFusionLowering,
         name = "IfNullExpressionsFusionLowering",
         description = "Simplify '?.' and '?:' operator chains"
+)
+
+internal val foldConstantLoweringPhase = makeKonanFileOpPhase(
+        { context, irFile -> FoldConstantLowering(context).lower(irFile) },
+        name = "FoldConstantLowering",
+        description = "Constant Folding"
 )
\ No newline at end of file
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt
index 21ed5a183a7..48adc5a4c84 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt
@@ -363,6 +363,7 @@ internal val allLoweringsPhase = NamedCompilerPhase(
                             enumConstructorsPhase,
                             initializersPhase,
                             localFunctionsPhase,
+                            foldConstantLoweringPhase,
                             tailrecPhase,
                             defaultParameterExtentPhase,
                             innerClassPhase,