JVM_IR: set dispatchReceiverParameter of imported JvmStatic object methods to null

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/ir/IrUtils.kt

@@ -21,10 +21,7 @@ import org.jetbrains.kotlin.ir.symbols.IrTypeParameterSymbol
 import org.jetbrains.kotlin.ir.types.*
 import org.jetbrains.kotlin.ir.types.impl.IrSimpleTypeImpl
 import org.jetbrains.kotlin.ir.types.impl.IrStarProjectionImpl
-import org.jetbrains.kotlin.ir.util.fqNameWhenAvailable
-import org.jetbrains.kotlin.ir.util.hasAnnotation
-import org.jetbrains.kotlin.ir.util.isFunction
-import org.jetbrains.kotlin.ir.util.isSuspendFunctionTypeOrSubtype
+import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.resolve.jvm.annotations.JVM_DEFAULT_FQ_NAME
 
 /**
@@ -120,3 +117,7 @@ fun JvmBackendContext.createJvmIrBuilder(
     startOffset: Int = UNDEFINED_OFFSET,
     endOffset: Int = UNDEFINED_OFFSET
 ) = JvmIrBuilder(this, symbol, startOffset, endOffset)
+
+
+fun IrDeclaration.isInCurrentModule(): Boolean =
+    getPackageFragment() is IrFile

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/JvmStaticAnnotationLowering.kt

@@ -8,9 +8,7 @@ package org.jetbrains.kotlin.backend.jvm.lower
 import org.jetbrains.kotlin.backend.common.ClassLoweringPass
 import org.jetbrains.kotlin.backend.common.FileLoweringPass
 import org.jetbrains.kotlin.backend.common.descriptors.WrappedSimpleFunctionDescriptor
-import org.jetbrains.kotlin.backend.common.ir.copyTo
-import org.jetbrains.kotlin.backend.common.ir.copyTypeParametersFrom
-import org.jetbrains.kotlin.backend.common.ir.passTypeArgumentsFrom
+import org.jetbrains.kotlin.backend.common.ir.*
 import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.backend.common.lower.irBlock
 import org.jetbrains.kotlin.backend.common.lower.replaceThisByStaticReference
@@ -18,6 +16,7 @@ import org.jetbrains.kotlin.backend.common.phaser.makeIrFilePhase
 import org.jetbrains.kotlin.backend.common.runOnFilePostfix
 import org.jetbrains.kotlin.backend.jvm.JvmBackendContext
 import org.jetbrains.kotlin.backend.jvm.JvmLoweredDeclarationOrigin
+import org.jetbrains.kotlin.backend.jvm.ir.isInCurrentModule
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.descriptors.Visibility
@@ -192,6 +191,14 @@ private class MakeCallsStatic(
 ) : IrElementTransformerVoid() {
     override fun visitCall(expression: IrCall): IrExpression {
         if (expression.symbol.owner.isJvmStaticInSingleton() && expression.dispatchReceiver != null) {
+            // Imported functions do not have their receiver parameter nulled by SingletonObjectJvmStaticLowering,
+            // so we have to do it here.
+            // TODO: would be better handled by lowering imported declarations.
+            val callee = expression.symbol.owner as IrSimpleFunction
+            val newCallee = if (!callee.isInCurrentModule()) {
+                callee.copyRemovingDispatchReceiver()       // TODO: cache these
+            } else callee
+
             return context.createIrBuilder(expression.symbol, expression.startOffset, expression.endOffset).irBlock(expression) {
                 // OldReceiver has to be evaluated for its side effects.
                 val oldReceiver = super.visitExpression(expression.dispatchReceiver!!)
@@ -205,15 +212,34 @@ private class MakeCallsStatic(
                 )
 
                 +super.visitExpression(oldReceiverVoid)
-                expression.dispatchReceiver = null
-                +super.visitCall(expression)
+                +super.visitCall(
+                    irCall(expression, newFunction = newCallee).apply { dispatchReceiver = null }
+                )
             }
         }
         return super.visitCall(expression)
     }
+
+    private fun IrSimpleFunction.copyRemovingDispatchReceiver(): IrSimpleFunction {
+        val newDescriptor = WrappedSimpleFunctionDescriptor(descriptor)
+        return IrFunctionImpl(
+            startOffset, endOffset, origin,
+            IrSimpleFunctionSymbolImpl(newDescriptor),
+            name,
+            visibility, modality, returnType, isInline, isExternal, isTailrec, isSuspend
+        ).also {
+            newDescriptor.bind(it)
+            it.parent = parent
+            it.correspondingPropertySymbol = correspondingPropertySymbol
+            it.annotations.addAll(annotations)
+            it.copyParameterDeclarationsFrom(this)
+            it.dispatchReceiverParameter = null
+        }
+    }
 }
 
 private fun isJvmStaticFunction(declaration: IrDeclaration): Boolean =
     declaration is IrSimpleFunction &&
             (declaration.hasAnnotation(JVM_STATIC_ANNOTATION_FQ_NAME) ||
                     declaration.correspondingPropertySymbol?.owner?.hasAnnotation(JVM_STATIC_ANNOTATION_FQ_NAME) == true)
+

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/StaticDefaultFunctionLowering.kt

@@ -94,7 +94,9 @@ private class StaticDefaultCallLowering(
 
     override fun visitCall(expression: IrCall): IrExpression {
         val callee = expression.symbol.owner
-        if (callee.origin !== IrDeclarationOrigin.FUNCTION_FOR_DEFAULT_PARAMETER || callee.dispatchReceiverParameter == null) {
+        if (callee.origin !== IrDeclarationOrigin.FUNCTION_FOR_DEFAULT_PARAMETER ||
+                expression.dispatchReceiver == null
+        ) {
             return super.visitCall(expression)
         }
 

compiler/testData/codegen/box/jvmStatic/defaultCrossFile.kt

@@ -0,0 +1,21 @@
+// TARGET_BACKEND: JVM
+
+// WITH_RUNTIME
+// FILE: 1.kt
+
+fun box(): String {
+
+    if (A.test() != "OK") return "fail 1"
+
+    return "OK"
+}
+
+// FILE: 2.kt
+
+object A {
+
+    @JvmStatic fun test(b: String = "OK") : String {
+        return b
+    }
+}
+

compiler/testData/compileKotlinAgainstKotlin/jvmStaticInObject.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // FILE: A.kt
 

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -15240,6 +15240,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/jvmStatic/default.kt");
         }
 
+        @TestMetadata("defaultCrossFile.kt")
+        public void testDefaultCrossFile() throws Exception {
+            runTest("compiler/testData/codegen/box/jvmStatic/defaultCrossFile.kt");
+        }
+
         @TestMetadata("enumCompanion.kt")
         public void testEnumCompanion() throws Exception {
             runTest("compiler/testData/codegen/box/jvmStatic/enumCompanion.kt");

compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -15240,6 +15240,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/jvmStatic/default.kt");
         }
 
+        @TestMetadata("defaultCrossFile.kt")
+        public void testDefaultCrossFile() throws Exception {
+            runTest("compiler/testData/codegen/box/jvmStatic/defaultCrossFile.kt");
+        }
+
         @TestMetadata("enumCompanion.kt")
         public void testEnumCompanion() throws Exception {
             runTest("compiler/testData/codegen/box/jvmStatic/enumCompanion.kt");

compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java

@@ -14125,6 +14125,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/jvmStatic/default.kt");
         }
 
+        @TestMetadata("defaultCrossFile.kt")
+        public void testDefaultCrossFile() throws Exception {
+            runTest("compiler/testData/codegen/box/jvmStatic/defaultCrossFile.kt");
+        }
+
         @TestMetadata("enumCompanion.kt")
         public void testEnumCompanion() throws Exception {
             runTest("compiler/testData/codegen/box/jvmStatic/enumCompanion.kt");