From addb6e08d81fd50570a2ebf3d6e44e7b3c1c3490 Mon Sep 17 00:00:00 2001
From: Vasily Levchenko <vasily.levchenko@jetbrains.com>
Date: Wed, 5 Jul 2017 11:46:41 +0300
Subject: [PATCH] [link][debug] when build debug build, it's better to use -O0
 opt flags

---
 .../org/jetbrains/kotlin/backend/konan/LinkStage.kt   | 11 +++++++----
 backend.native/konan.properties                       |  1 +
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/LinkStage.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/LinkStage.kt
index b8702bdee08..2643f3dbe64 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/LinkStage.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/LinkStage.kt
@@ -48,6 +48,8 @@ internal abstract class PlatformFlags(val distribution: Distribution) {
         = propertyTargetList("linkerKonanFlags")
     open val linkerDebugFlags
             = propertyTargetList("linkerDebugFlags")
+    open val llvmDebugOptFlags
+            = propertyTargetList("llvmDebugOptFlags")
 
     open val useCompilerDriverAsLinker: Boolean get() = false // TODO: refactor.
 
@@ -198,6 +200,7 @@ internal class LinkStage(val context: Context) {
     }
 
     val optimize = config.get(KonanConfigKeys.OPTIMIZATION) ?: false
+    val debug = config.get(KonanConfigKeys.DEBUG) ?: false
     val nomain = config.get(KonanConfigKeys.NOMAIN) ?: false
     val emitted = context.bitcodeFileName
     val libraries = context.config.libraries
@@ -210,10 +213,10 @@ internal class LinkStage(val context: Context) {
         val tool = distribution.llvmLto
         val command = mutableListOf(tool, "-o", combined)
         command.addAll(platform.llvmLtoFlags)
-        if (optimize) {
-            command.addAll(platform.llvmLtoOptFlags)
-        } else {
-            command.addAll(platform.llvmLtoNooptFlags)
+        when {
+            optimize -> command.addAll(platform.llvmLtoOptFlags)
+            debug    -> command.addAll(platform.llvmDebugOptFlags)
+            else     -> command.addAll(platform.llvmLtoNooptFlags)
         }
         command.addAll(files)
         runTool(*command.toTypedArray())
diff --git a/backend.native/konan.properties b/backend.native/konan.properties
index f8ee6d3163e..8d2df05cb87 100644
--- a/backend.native/konan.properties
+++ b/backend.native/konan.properties
@@ -20,6 +20,7 @@ dependenciesUrl = http://download.jetbrains.com/kotlin/native
 # Don't check dependencies on a server.
 # If true, dependency downloader will throw an exception if a dependency isn't found in konan.home.
 airplaneMode = false
+llvmDebugOptFlags = -O0
 
 # Mac OS X.
 llvmVersion.osx = 3.9.0