FIR2IR: convert adapted callable reference with vararg

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt

@@ -324,20 +324,31 @@ class CallAndReferenceGenerator(
             }
         }
 
+        fun IrValueParameter.toGetValue(): IrGetValue =
+            IrGetValueImpl(startOffset, endOffset, this.type, this.symbol)
+
         adapteeFunction.valueParameters.mapIndexed { index, valueParameter ->
             when {
                 valueParameter.hasDefaultValue() -> {
                     irCall.putValueArgument(shift + index, null)
                 }
                 valueParameter.isVararg -> {
-                    // TODO: handle vararg and spread
-                    irCall.putValueArgument(shift + index, null)
+                    if (adapterFunction.valueParameters.size <= index) {
+                        irCall.putValueArgument(shift + index, null)
+                    } else {
+                        val adaptedValueArgument =
+                            IrVarargImpl(startOffset, endOffset, valueParameter.type, valueParameter.varargElementType!!)
+                        val irValueArgument = adapterFunction.valueParameters[index].toGetValue()
+                        if (irValueArgument.type == valueParameter.type) {
+                            adaptedValueArgument.addElement(IrSpreadElementImpl(startOffset, endOffset, irValueArgument))
+                        } else {
+                            adaptedValueArgument.addElement(irValueArgument)
+                        }
+                        irCall.putValueArgument(shift + index, adaptedValueArgument)
+                    }
                 }
                 else -> {
-                    val irValueArgument = adapterFunction.valueParameters[index]
-                    irCall.putValueArgument(
-                        shift + index, IrGetValueImpl(startOffset, endOffset, irValueArgument.type, irValueArgument.symbol)
-                    )
+                    irCall.putValueArgument(shift + index, adapterFunction.valueParameters[index].toGetValue())
                 }
             }
         }

compiler/testData/codegen/box/callableReference/adaptedReferences/suspendConversion/adaptedWithVarargs.kt

@@ -1,7 +1,6 @@
 // !LANGUAGE: +SuspendConversion
 // WITH_RUNTIME
 // WITH_COROUTINES
-// IGNORE_BACKEND_FIR: JVM_IR
 
 import helpers.*
 import kotlin.coroutines.*

compiler/testData/codegen/box/callableReference/adaptedReferences/suspendConversion/inlineAdaptedWithVarargs.kt

@@ -1,7 +1,6 @@
 // !LANGUAGE: +SuspendConversion
 // WITH_RUNTIME
 // WITH_COROUTINES
-// IGNORE_BACKEND_FIR: JVM_IR
 
 import helpers.*
 import kotlin.coroutines.*

compiler/testData/ir/irText/expressions/callableReferences/adaptedWithCoercionToUnit.fir.txt

@@ -54,3 +54,5 @@ FILE fqName:<root> fileName:/adaptedWithCoercionToUnit.kt
               VALUE_PARAMETER ADAPTER_PARAMETER_FOR_CALLABLE_REFERENCE name:p0 index:0 type:kotlin.Int
               BLOCK_BODY
                 CALL 'public final fun fnv (vararg xs: kotlin.Int): kotlin.Int declared in <root>' type=kotlin.Int origin=null
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.testV1.fnv' type=kotlin.Int origin=null

compiler/testData/ir/irText/expressions/callableReferences/suspendConversion.fir.txt

@@ -88,6 +88,8 @@ FILE fqName:<root> fileName:/suspendConversion.kt
             VALUE_PARAMETER ADAPTER_PARAMETER_FOR_CALLABLE_REFERENCE name:p0 index:0 type:kotlin.Int
             BLOCK_BODY
               CALL 'public final fun foo2 (vararg xs: kotlin.Int): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+                xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                  GET_VAR 'p0: kotlin.Int declared in <root>.testWithVarargMapped.foo2' type=kotlin.Int origin=null
   FUN name:testWithCoercionToUnit visibility:public modality:FINAL <> () returnType:kotlin.Unit
     BLOCK_BODY
       CALL 'public final fun useSuspend (fn: kotlin.coroutines.SuspendFunction0<kotlin.Unit>): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null

compiler/testData/ir/irText/expressions/callableReferences/unboundMemberReferenceWithAdaptedArguments.fir.txt

@@ -67,6 +67,8 @@ FILE fqName:<root> fileName:/unboundMemberReferenceWithAdaptedArguments.kt
             BLOCK_BODY
               CALL 'public open fun foo (vararg xs: kotlin.Int): kotlin.Int declared in <root>.A' type=kotlin.Int origin=null
                 $this: GET_VAR 'p0: <root>.A declared in <root>.testUnbound.foo' type=<root>.A origin=null
+                xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                  GET_VAR 'p0: <root>.A declared in <root>.testUnbound.foo' type=<root>.A origin=null
   FUN name:testBound visibility:public modality:FINAL <> (a:<root>.A) returnType:kotlin.Unit
     VALUE_PARAMETER name:a index:0 type:<root>.A
     BLOCK_BODY
@@ -78,6 +80,8 @@ FILE fqName:<root> fileName:/unboundMemberReferenceWithAdaptedArguments.kt
             BLOCK_BODY
               CALL 'public open fun foo (vararg xs: kotlin.Int): kotlin.Int declared in <root>.A' type=kotlin.Int origin=null
                 $this: GET_VAR 'receiver: <root>.A declared in <root>.testBound.foo' type=<root>.A origin=ADAPTED_FUNCTION_REFERENCE
+                xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                  GET_VAR 'p0: kotlin.Int declared in <root>.testBound.foo' type=kotlin.Int origin=null
           FUNCTION_REFERENCE 'local final fun foo (p0: kotlin.Int): kotlin.Unit declared in <root>.testBound' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=null
             $receiver: GET_VAR 'a: <root>.A declared in <root>.testBound' type=<root>.A origin=null
   FUN name:testObject visibility:public modality:FINAL <> () returnType:kotlin.Unit
@@ -90,5 +94,7 @@ FILE fqName:<root> fileName:/unboundMemberReferenceWithAdaptedArguments.kt
             BLOCK_BODY
               CALL 'public final fun foo (vararg xs: kotlin.Int): kotlin.Int declared in <root>.Obj' type=kotlin.Int origin=null
                 $this: GET_VAR 'receiver: <root>.Obj declared in <root>.testObject.foo' type=<root>.Obj origin=ADAPTED_FUNCTION_REFERENCE
+                xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                  GET_VAR 'p0: kotlin.Int declared in <root>.testObject.foo' type=kotlin.Int origin=null
           FUNCTION_REFERENCE 'local final fun foo (p0: kotlin.Int): kotlin.Unit declared in <root>.testObject' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=null
             $receiver: GET_OBJECT 'CLASS OBJECT name:Obj modality:FINAL visibility:public superTypes:[<root>.A]' type=<root>.Obj

compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.txt

@@ -34,3 +34,5 @@ FILE fqName:<root> fileName:/withAdaptationForSam.kt
               VALUE_PARAMETER ADAPTER_PARAMETER_FOR_CALLABLE_REFERENCE name:p0 index:0 type:kotlin.Int
               BLOCK_BODY
                 CALL 'public final fun withVararg (vararg xs: kotlin.Int): kotlin.Int declared in <root>' type=kotlin.Int origin=null
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.test.withVararg' type=kotlin.Int origin=null

compiler/testData/ir/irText/expressions/callableReferences/withArgumentAdaptationAndReceiver.fir.txt

@@ -28,6 +28,8 @@ FILE fqName:<root> fileName:/withArgumentAdaptationAndReceiver.kt
               BLOCK_BODY
                 CALL 'public final fun withVararg (vararg xs: kotlin.Int): kotlin.String declared in <root>.Host' type=kotlin.String origin=null
                   $this: GET_VAR 'receiver: <root>.Host declared in <root>.Host.testImplicitThis.withVararg' type=<root>.Host origin=ADAPTED_FUNCTION_REFERENCE
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.Host.testImplicitThis.withVararg' type=kotlin.Int origin=null
             FUNCTION_REFERENCE 'local final fun withVararg (p0: kotlin.Int): kotlin.Unit declared in <root>.Host.testImplicitThis' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=null
     FUN name:testBoundReceiverLocalVal visibility:public modality:FINAL <> ($this:<root>.Host) returnType:kotlin.Unit
       $this: VALUE_PARAMETER name:<this> type:<root>.Host
@@ -42,6 +44,8 @@ FILE fqName:<root> fileName:/withArgumentAdaptationAndReceiver.kt
               BLOCK_BODY
                 CALL 'public final fun withVararg (vararg xs: kotlin.Int): kotlin.String declared in <root>.Host' type=kotlin.String origin=null
                   $this: GET_VAR 'receiver: <root>.Host declared in <root>.Host.testBoundReceiverLocalVal.withVararg' type=<root>.Host origin=ADAPTED_FUNCTION_REFERENCE
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.Host.testBoundReceiverLocalVal.withVararg' type=kotlin.Int origin=null
             FUNCTION_REFERENCE 'local final fun withVararg (p0: kotlin.Int): kotlin.Unit declared in <root>.Host.testBoundReceiverLocalVal' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=null
               $receiver: GET_VAR 'val h: <root>.Host [val] declared in <root>.Host.testBoundReceiverLocalVal' type=<root>.Host origin=null
     FUN name:testBoundReceiverLocalVar visibility:public modality:FINAL <> ($this:<root>.Host) returnType:kotlin.Unit
@@ -59,6 +63,8 @@ FILE fqName:<root> fileName:/withArgumentAdaptationAndReceiver.kt
               BLOCK_BODY
                 CALL 'public final fun withVararg (vararg xs: kotlin.Int): kotlin.String declared in <root>.Host' type=kotlin.String origin=null
                   $this: GET_VAR 'receiver: <root>.Host declared in <root>.Host.testBoundReceiverLocalVar.withVararg' type=<root>.Host origin=ADAPTED_FUNCTION_REFERENCE
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.Host.testBoundReceiverLocalVar.withVararg' type=kotlin.Int origin=null
             FUNCTION_REFERENCE 'local final fun withVararg (p0: kotlin.Int): kotlin.Unit declared in <root>.Host.testBoundReceiverLocalVar' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=null
               $receiver: GET_VAR 'var h: <root>.Host [var] declared in <root>.Host.testBoundReceiverLocalVar' type=<root>.Host origin=null
     FUN name:testBoundReceiverParameter visibility:public modality:FINAL <> ($this:<root>.Host, h:<root>.Host) returnType:kotlin.Unit
@@ -73,6 +79,8 @@ FILE fqName:<root> fileName:/withArgumentAdaptationAndReceiver.kt
               BLOCK_BODY
                 CALL 'public final fun withVararg (vararg xs: kotlin.Int): kotlin.String declared in <root>.Host' type=kotlin.String origin=null
                   $this: GET_VAR 'receiver: <root>.Host declared in <root>.Host.testBoundReceiverParameter.withVararg' type=<root>.Host origin=ADAPTED_FUNCTION_REFERENCE
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.Host.testBoundReceiverParameter.withVararg' type=kotlin.Int origin=null
             FUNCTION_REFERENCE 'local final fun withVararg (p0: kotlin.Int): kotlin.Unit declared in <root>.Host.testBoundReceiverParameter' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=null
               $receiver: GET_VAR 'h: <root>.Host declared in <root>.Host.testBoundReceiverParameter' type=<root>.Host origin=null
     FUN name:testBoundReceiverExpression visibility:public modality:FINAL <> ($this:<root>.Host) returnType:kotlin.Unit
@@ -88,6 +96,8 @@ FILE fqName:<root> fileName:/withArgumentAdaptationAndReceiver.kt
               BLOCK_BODY
                 CALL 'public final fun withVararg (vararg xs: kotlin.Int): kotlin.String declared in <root>.Host' type=kotlin.String origin=null
                   $this: GET_VAR 'receiver: <root>.Host declared in <root>.Host.testBoundReceiverExpression.withVararg' type=<root>.Host origin=ADAPTED_FUNCTION_REFERENCE
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.Host.testBoundReceiverExpression.withVararg' type=kotlin.Int origin=null
             FUNCTION_REFERENCE 'local final fun withVararg (p0: kotlin.Int): kotlin.Unit declared in <root>.Host.testBoundReceiverExpression' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=null
               $receiver: CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in <root>.Host' type=<root>.Host origin=null
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]

compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.txt

@@ -66,3 +66,5 @@ FILE fqName:<root> fileName:/samConversionInVarargs.kt
               VALUE_PARAMETER ADAPTER_PARAMETER_FOR_CALLABLE_REFERENCE name:p0 index:0 type:kotlin.Int
               BLOCK_BODY
                 CALL 'public final fun withVarargOfInt (vararg xs: kotlin.Int): kotlin.String declared in <root>' type=kotlin.String origin=null
+                  xs: VARARG type=kotlin.IntArray varargElementType=kotlin.Int
+                    GET_VAR 'p0: kotlin.Int declared in <root>.testAdaptedCR.withVarargOfInt' type=kotlin.Int origin=null