Avoid using unnamed bridges for ObjCExport (#3393)

Since lldb's crashlog.py can't handle them.

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/objcexport/BlockPointerSupport.kt

@@ -74,7 +74,7 @@ internal fun ObjCExportCodeGenerator.generateBlockToKotlinFunctionConverter(
     return generateFunction(
             codegen,
             functionType(codegen.kObjHeaderPtr, false, int8TypePtr, codegen.kObjHeaderPtrPtr),
-            ""
+            "convertBlock${bridge.nameSuffix}"
     ) {
         val blockPtr = param(0)
         ifThen(icmpEq(blockPtr, kNullInt8Ptr)) {

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/objcexport/ObjCExportCodeGenerator.kt

@@ -542,7 +542,7 @@ private inline fun ObjCExportCodeGenerator.generateObjCImpBy(
         methodBridge: MethodBridge,
         genBody: FunctionGenerationContext.() -> Unit
 ): LLVMValueRef {
-    val result = LLVMAddFunction(context.llvmModule, "", objCFunctionType(context, methodBridge))!!
+    val result = LLVMAddFunction(context.llvmModule, "objc2kotlin", objCFunctionType(context, methodBridge))!!
 
     generateFunction(codegen, result) {
         genBody()
@@ -720,7 +720,7 @@ private fun ObjCExportCodeGenerator.generateKotlinToObjCBridge(
 
     val functionType = codegen.getLlvmFunctionType(irFunction)
 
-    val result = generateFunction(codegen, functionType, "") {
+    val result = generateFunction(codegen, functionType, "kotlin2objc") {
         var errorOutPtr: LLVMValueRef? = null
         var kotlinResultOutPtr: LLVMValueRef? = null
         lateinit var kotlinResultOutBridge: TypeBridge
@@ -1167,7 +1167,7 @@ private inline fun ObjCExportCodeGenerator.generateObjCToKotlinSyntheticGetter(
     )
 
     val encoding = getEncoding(methodBridge)
-    val imp = generateFunction(codegen, objCFunctionType(context, methodBridge), "") {
+    val imp = generateFunction(codegen, objCFunctionType(context, methodBridge), "objc2kotlin") {
         block()
     }