JVM_IR: Fix inlining of interface methods

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

@@ -523,7 +523,8 @@ fun createStaticFunctionWithReceivers(
         oldFunction.visibility,
         Modality.FINAL,
         oldFunction.returnType,
-        isInline = false, isExternal = false, isTailrec = false, isSuspend = false
+        isInline = oldFunction.isInline,
+        isExternal = false, isTailrec = false, isSuspend = false
     ).apply {
         descriptor.bind(this)
         parent = irParent

compiler/testData/codegen/bytecodeText/inline/interfaceDefaultMethod.kt

@@ -0,0 +1,16 @@
+interface A {
+    private inline fun <reified T> callDefault(b: () -> String): String {
+        "String" is T
+        return b()
+    }
+
+    fun ok() = callDefault<String> { "OK" }
+}
+
+class B : A
+
+fun box(): String {
+    return B().ok()
+}
+
+// 0 INVOKESTATIC A$DefaultImpls.callDefault

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

@@ -2277,6 +2277,11 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/inline/inlineSuspendReifiedNoSpilling.kt");
         }
 
+        @TestMetadata("interfaceDefaultMethod.kt")
+        public void testInterfaceDefaultMethod() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/inline/interfaceDefaultMethod.kt");
+        }
+
         @TestMetadata("linenumberForOneParametersArgumentCall.kt")
         public void testLinenumberForOneParametersArgumentCall() throws Exception {
             runTest("compiler/testData/codegen/bytecodeText/inline/linenumberForOneParametersArgumentCall.kt");

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

@@ -2247,6 +2247,11 @@ public class IrBytecodeTextTestGenerated extends AbstractIrBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/inline/inlineSuspendReifiedNoSpilling.kt");
         }
 
+        @TestMetadata("interfaceDefaultMethod.kt")
+        public void testInterfaceDefaultMethod() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/inline/interfaceDefaultMethod.kt");
+        }
+
         @TestMetadata("linenumberForOneParametersArgumentCall.kt")
         public void testLinenumberForOneParametersArgumentCall() throws Exception {
             runTest("compiler/testData/codegen/bytecodeText/inline/linenumberForOneParametersArgumentCall.kt");