JVM_IR KT-34594 don't generate fake local variable for @InlineOnly

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBytecodeTextTestGenerated.java

@@ -3282,6 +3282,12 @@ public class FirBytecodeTextTestGenerated extends AbstractFirBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/inline/linenumberForOneParametersArgumentCall.kt");
         }
 
+        @Test
+        @TestMetadata("noFakeVariableForInlineOnlyFun.kt")
+        public void testNoFakeVariableForInlineOnlyFun() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/inline/noFakeVariableForInlineOnlyFun.kt");
+        }
+
         @Test
         @TestMetadata("noSynAccessor.kt")
         public void testNoSynAccessor() throws Exception {

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

@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.backend.common.FileLoweringPass
 import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.backend.common.phaser.makeIrFilePhase
 import org.jetbrains.kotlin.backend.jvm.JvmBackendContext
+import org.jetbrains.kotlin.backend.jvm.codegen.isInlineOnly
 import org.jetbrains.kotlin.backend.jvm.ir.IrInlineReferenceLocator
 import org.jetbrains.kotlin.codegen.inline.coroutines.FOR_INLINE_SUFFIX
 import org.jetbrains.kotlin.ir.builders.createTmpVariable
@@ -35,7 +36,7 @@ internal class FakeInliningLocalVariablesLowering(val context: JvmBackendContext
 
     override fun visitFunction(declaration: IrFunction, data: IrDeclaration?) {
         super.visitFunction(declaration, data)
-        if (declaration.isInline && !declaration.origin.isSynthetic && declaration.body != null) {
+        if (declaration.isInline && !declaration.origin.isSynthetic && declaration.body != null && !declaration.isInlineOnly()) {
             declaration.addFakeInliningLocalVariables()
         }
     }

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

@@ -0,0 +1,17 @@
+@Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER")
+@kotlin.internal.InlineOnly
+inline fun inlineOnlyFun() = 42
+
+fun test() = inlineOnlyFun()
+
+// JVM_TEMPLATES
+// 1 LDC 0
+// 1 ICONST_0
+// 0 ISTORE 1
+// 2 ISTORE 0
+
+// JVM_IR_TEMPLATES
+// 0 LDC 0
+// 0 ICONST_0
+// 0 ISTORE 1
+// 0 ISTORE 0

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BytecodeTextTestGenerated.java

@@ -3144,6 +3144,12 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/inline/linenumberForOneParametersArgumentCall.kt");
         }
 
+        @Test
+        @TestMetadata("noFakeVariableForInlineOnlyFun.kt")
+        public void testNoFakeVariableForInlineOnlyFun() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/inline/noFakeVariableForInlineOnlyFun.kt");
+        }
+
         @Test
         @TestMetadata("noSynAccessor.kt")
         public void testNoSynAccessor() throws Exception {

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBytecodeTextTestGenerated.java

@@ -3282,6 +3282,12 @@ public class IrBytecodeTextTestGenerated extends AbstractIrBytecodeTextTest {
             runTest("compiler/testData/codegen/bytecodeText/inline/linenumberForOneParametersArgumentCall.kt");
         }
 
+        @Test
+        @TestMetadata("noFakeVariableForInlineOnlyFun.kt")
+        public void testNoFakeVariableForInlineOnlyFun() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/inline/noFakeVariableForInlineOnlyFun.kt");
+        }
+
         @Test
         @TestMetadata("noSynAccessor.kt")
         public void testNoSynAccessor() throws Exception {