JVM_IR: resolve inline fake overrides before codegen

See KT-33054 and KT-29242.

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

@@ -298,6 +298,7 @@ private val jvmFilePhases =
         additionalClassAnnotationPhase then
         typeOperatorLowering then
         replaceKFunctionInvokeWithFunctionInvokePhase then
+        resolveInlineCallsPhase then
 
         checkLocalNamesWithOldBackendPhase then
 

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt

@@ -965,9 +965,8 @@ class ExpressionCodegen(
             }
         }
 
-        val original = (callee as? IrSimpleFunction)?.resolveFakeOverride() ?: irFunction
         val methodOwner = callee.parent.safeAs<IrClass>()?.let(typeMapper::mapClass) ?: MethodSignatureMapper.FAKE_OWNER_TYPE
-        val sourceCompiler = IrSourceCompilerForInline(state, element, original, this, data)
+        val sourceCompiler = IrSourceCompilerForInline(state, element, callee, this, data)
 
         val reifiedTypeInliner = ReifiedTypeInliner(mappings, object : ReifiedTypeInliner.IntrinsicsSupport<IrType> {
             override fun putClassInstance(v: InstructionAdapter, type: IrType) {
@@ -977,9 +976,7 @@ class ExpressionCodegen(
             override fun toKotlinType(type: IrType): KotlinType = type.toKotlinType()
         }, IrTypeCheckerContext(context.irBuiltIns), state.languageVersionSettings)
 
-        return IrInlineCodegen(
-            this, state, original.descriptor, methodOwner, signature, mappings, sourceCompiler, reifiedTypeInliner
-        )
+        return IrInlineCodegen(this, state, callee.descriptor, methodOwner, signature, mappings, sourceCompiler, reifiedTypeInliner)
     }
 
     override fun consumeReifiedOperationMarker(typeParameter: TypeParameterMarker) {

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

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.backend.jvm.lower
+
+import org.jetbrains.kotlin.backend.common.FileLoweringPass
+import org.jetbrains.kotlin.backend.common.phaser.makeIrFilePhase
+import org.jetbrains.kotlin.backend.jvm.JvmBackendContext
+import org.jetbrains.kotlin.backend.jvm.codegen.isInlineFunctionCall
+import org.jetbrains.kotlin.ir.declarations.IrFile
+import org.jetbrains.kotlin.ir.declarations.IrSimpleFunction
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.expressions.IrExpression
+import org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl
+import org.jetbrains.kotlin.ir.util.copyTypeAndValueArgumentsFrom
+import org.jetbrains.kotlin.ir.util.resolveFakeOverride
+import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
+
+internal val resolveInlineCallsPhase = makeIrFilePhase(
+    ::ResolveInlineCalls,
+    name = "ResolveInlineCalls",
+    description = "Statically resolve calls to inline methods to particular implementations"
+)
+
+class ResolveInlineCalls(val context: JvmBackendContext) : IrElementTransformerVoid(), FileLoweringPass {
+    override fun lower(irFile: IrFile) = irFile.transformChildrenVoid()
+
+    override fun visitCall(expression: IrCall): IrExpression {
+        if (!expression.symbol.owner.isInlineFunctionCall(context))
+            return super.visitCall(expression)
+        val maybeFakeOverride = expression.symbol.owner as? IrSimpleFunction
+            ?: return super.visitCall(expression)
+        val resolved = maybeFakeOverride.resolveFakeOverride()
+            ?: return super.visitCall(expression)
+        return super.visitCall(with(expression) {
+            IrCallImpl(startOffset, endOffset, type, resolved.symbol, superQualifierSymbol).apply {
+                copyTypeAndValueArgumentsFrom(expression)
+            }
+        })
+    }
+}

compiler/testData/codegen/box/jvm8/kt29242.kt

@@ -0,0 +1,24 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM
+// JVM_TARGET: 1.8
+// See also kt33054.kt
+
+fun causesVerifyErrorSample(): Sample<Boolean> = Sample
+    .Success(true)
+    .flatMap { Sample.Failure(RuntimeException()) }
+
+sealed class Sample<out T> {
+    inline fun <R> flatMap(f: (T) -> Sample<R>): Sample<R> =
+        when (this) {
+            is Failure -> this
+            is Success -> f(this.value)
+        }
+
+    data class Failure(val exception: Throwable): Sample<Nothing>()
+    data class Success<out T>(val value: T): Sample<T>()
+}
+
+fun box(): String {
+    causesVerifyErrorSample()
+    return "OK"
+}

compiler/testData/codegen/box/jvm8/kt33054.kt

@@ -0,0 +1,19 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM
+// JVM_TARGET: 1.8
+
+open class A(val x: String) {
+    inline fun f() = if (this is C) this else A("O")
+
+    val y
+        inline get() = if (this is C) this else A("K")
+}
+
+class B : A("unused")
+class C : A("unused")
+
+// If the receiver is not CHECKCASTed to A when inlining, asm will infer Object
+// for the result of `if` in `f` instead of A when generating stack maps because
+// one branch has type A while the other has type B (a subtype of A, but asm
+// does not know that). This would cause a JVM validation error.
+fun box() = B().f().x + B().y.x

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

@@ -14519,6 +14519,16 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/jvm8/kt16588.kt");
         }
 
+        @TestMetadata("kt29242.kt")
+        public void testKt29242() throws Exception {
+            runTest("compiler/testData/codegen/box/jvm8/kt29242.kt");
+        }
+
+        @TestMetadata("kt33054.kt")
+        public void testKt33054() throws Exception {
+            runTest("compiler/testData/codegen/box/jvm8/kt33054.kt");
+        }
+
         @TestMetadata("kt6301.kt")
         public void testKt6301() throws Exception {
             runTest("compiler/testData/codegen/box/jvm8/kt6301.kt");

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

@@ -14446,6 +14446,16 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)
     public static class Jvm8 extends AbstractLightAnalysisModeTest {
+        @TestMetadata("kt29242.kt")
+        public void ignoreKt29242() throws Exception {
+            runTest("compiler/testData/codegen/box/jvm8/kt29242.kt");
+        }
+
+        @TestMetadata("kt33054.kt")
+        public void ignoreKt33054() throws Exception {
+            runTest("compiler/testData/codegen/box/jvm8/kt33054.kt");
+        }
+
         private void runTest(String testDataFilePath) throws Exception {
             KotlinTestUtils.runTest(this::doTest, TargetBackend.JVM, testDataFilePath);
         }

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

@@ -13404,6 +13404,16 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/jvm8/kt16588.kt");
         }
 
+        @TestMetadata("kt29242.kt")
+        public void testKt29242() throws Exception {
+            runTest("compiler/testData/codegen/box/jvm8/kt29242.kt");
+        }
+
+        @TestMetadata("kt33054.kt")
+        public void testKt33054() throws Exception {
+            runTest("compiler/testData/codegen/box/jvm8/kt33054.kt");
+        }
+
         @TestMetadata("kt6301.kt")
         public void testKt6301() throws Exception {
             runTest("compiler/testData/codegen/box/jvm8/kt6301.kt");