diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/AdapterGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/AdapterGenerator.kt
index 1ed478b8998..613483bb793 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/AdapterGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/AdapterGenerator.kt
@@ -415,11 +415,26 @@ internal class AdapterGenerator(
 
         val samFirType = unwrappedArgument.resolvedType.let { it.removeExternalProjections() ?: it }
         val samType = samFirType.toIrType(ConversionTypeOrigin.DEFAULT)
+
         // Make sure the converted IrType owner indeed has a single abstract method, since FunctionReferenceLowering relies on it.
-        return IrTypeOperatorCallImpl(
-            this.startOffset, this.endOffset, samType, IrTypeOperator.SAM_CONVERSION, samType,
-            castArgumentToFunctionalInterfaceForSamType(this, unwrappedArgument.expression.resolvedType, samFirType)
-        )
+        fun IrExpression.generateSamConversion(samType: IrType, firSamConversion: FirSamConversionExpression, samFirType: ConeKotlinType) =
+            IrTypeOperatorCallImpl(
+                this.startOffset, this.endOffset, samType, IrTypeOperator.SAM_CONVERSION, samType,
+                castArgumentToFunctionalInterfaceForSamType(this, firSamConversion.expression.resolvedType, samFirType)
+            )
+
+        return if (this is IrBlock && origin == IrStatementOrigin.ADAPTED_FUNCTION_REFERENCE) {
+            // The IR for adapted callable references should be
+            // BLOCK ADAPTED_FUNCTION_REFERENCE(FUN ADAPTER_FOR_CALLABLE_REFERENCE, TYPE_OP SAM_CONVERSION(FUNCTION_REFERENCE))
+            // Therefore, we need to insert the cast as the last statement of the block, not around the block itself.
+            val lastIndex = statements.lastIndex
+            val samConversion = (statements[lastIndex] as IrExpression).generateSamConversion(samType, unwrappedArgument, samFirType)
+            statements[lastIndex] = samConversion
+            this.type = samConversion.type
+            this
+        } else {
+            generateSamConversion(samType, unwrappedArgument, samFirType)
+        }
     }
 
     // See org.jetbrains.kotlin.psi2ir.generators.ArgumentsGenerationUtilsKt.castArgumentToFunctionalInterfaceForSamType (K1 counterpart)
diff --git a/compiler/testData/codegen/box/sam/kt49226.kt b/compiler/testData/codegen/box/sam/kt49226.kt
index b7b4308281f..efc73f3bd0c 100644
--- a/compiler/testData/codegen/box/sam/kt49226.kt
+++ b/compiler/testData/codegen/box/sam/kt49226.kt
@@ -1,4 +1,6 @@
-// TARGET_BACKEND: JVM
+// TARGET_BACKEND: JVM_IR
+// CHECK_BYTECODE_LISTING
+// ^Verify that no anonymous class is generated KT-63329 KT-62858, old backend gets this wrong.
 
 // FILE: kt49226.kt
 fun box(): String {
diff --git a/compiler/testData/codegen/box/sam/kt49226.txt b/compiler/testData/codegen/box/sam/kt49226.txt
new file mode 100644
index 00000000000..dc18bdacef4
--- /dev/null
+++ b/compiler/testData/codegen/box/sam/kt49226.txt
@@ -0,0 +1,7 @@
+@kotlin.Metadata
+public final class Kt49226Kt {
+    // source: 'kt49226.kt'
+    private synthetic final static method box$arrayOf(p0: java.lang.String): java.lang.String[]
+    private final static method box$arrayOf__proxy(p0: java.lang.String): java.lang.String[]
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+}
diff --git a/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.ir.txt b/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.ir.txt
index 58d6bc29986..c4363a6f4e6 100644
--- a/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.ir.txt
+++ b/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.ir.txt
@@ -28,12 +28,12 @@ FILE fqName:<root> fileName:/withAdaptationForSam.kt
   FUN name:test visibility:public modality:FINAL <> () returnType:kotlin.Unit
     BLOCK_BODY
       CALL 'public final fun useFoo (foo: <root>.IFoo): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
-        foo: TYPE_OP type=<root>.IFoo origin=SAM_CONVERSION typeOperand=<root>.IFoo
-          BLOCK type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE
-            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:withVararg visibility:local modality:FINAL <> (p0:kotlin.Int) returnType:kotlin.Unit
-              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
+        foo: BLOCK type=<root>.IFoo origin=ADAPTED_FUNCTION_REFERENCE
+          FUN ADAPTER_FOR_CALLABLE_REFERENCE name:withVararg visibility:local modality:FINAL <> (p0:kotlin.Int) returnType:kotlin.Unit
+            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
+          TYPE_OP type=<root>.IFoo origin=SAM_CONVERSION typeOperand=<root>.IFoo
             FUNCTION_REFERENCE 'local final fun withVararg (p0: kotlin.Int): kotlin.Unit declared in <root>.test' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=public final fun withVararg (vararg xs: kotlin.Int): kotlin.Int declared in <root>
diff --git a/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.kt.txt b/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.kt.txt
index 7205e1690cf..5b8387c229f 100644
--- a/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.kt.txt
+++ b/compiler/testData/ir/irText/expressions/callableReferences/withAdaptationForSam.fir.kt.txt
@@ -16,7 +16,7 @@ fun test() {
       withVararg(xs = [p0])
     }
 
-    ::withVararg
-  } /*-> IFoo */)
+    ::withVararg /*-> IFoo */
+  })
 }
 
diff --git a/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.ir.txt b/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.ir.txt
index 66dc4547842..4744d24c44b 100644
--- a/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.ir.txt
+++ b/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.ir.txt
@@ -65,12 +65,12 @@ FILE fqName:<root> fileName:/samConversionInVarargs.kt
     BLOCK_BODY
       CALL 'public final fun useVararg (vararg foos: <root>.IFoo): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
         foos: VARARG type=kotlin.Array<out <root>.IFoo> varargElementType=<root>.IFoo
-          TYPE_OP type=<root>.IFoo origin=SAM_CONVERSION typeOperand=<root>.IFoo
-            BLOCK type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE
-              FUN ADAPTER_FOR_CALLABLE_REFERENCE name:withVarargOfInt visibility:local modality:FINAL <> (p0:kotlin.Int) returnType:kotlin.Unit
-                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
+          BLOCK type=<root>.IFoo origin=ADAPTED_FUNCTION_REFERENCE
+            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:withVarargOfInt visibility:local modality:FINAL <> (p0:kotlin.Int) returnType:kotlin.Unit
+              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
+            TYPE_OP type=<root>.IFoo origin=SAM_CONVERSION typeOperand=<root>.IFoo
               FUNCTION_REFERENCE 'local final fun withVarargOfInt (p0: kotlin.Int): kotlin.Unit declared in <root>.testAdaptedCR' type=kotlin.Function1<kotlin.Int, kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=public final fun withVarargOfInt (vararg xs: kotlin.Int): kotlin.String declared in <root>
diff --git a/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.kt.txt b/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.kt.txt
index 100ac6975a5..ab0b4ee240a 100644
--- a/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.kt.txt
+++ b/compiler/testData/ir/irText/expressions/funInterface/samConversionInVarargs.fir.kt.txt
@@ -36,7 +36,7 @@ fun testAdaptedCR() {
       withVarargOfInt(xs = [p0])
     }
 
-    ::withVarargOfInt
-  } /*-> IFoo */])
+    ::withVarargOfInt /*-> IFoo */
+  }])
 }
 
diff --git a/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.ir.txt b/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.ir.txt
index 160ffc42011..dc4b9912216 100644
--- a/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.ir.txt
+++ b/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.ir.txt
@@ -48,9 +48,9 @@ FILE fqName:<root> fileName:/samConversionOnCallableReference.kt
   FUN name:testSamConversionOnAdapted visibility:public modality:FINAL <> () returnType:kotlin.Unit
     BLOCK_BODY
       CALL 'public final fun use (r: <root>.KRunnable): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
-        r: TYPE_OP type=<root>.KRunnable origin=SAM_CONVERSION typeOperand=<root>.KRunnable
-          BLOCK type=kotlin.Function0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE
-            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:foo1 visibility:local modality:FINAL <> () returnType:kotlin.Unit
-              BLOCK_BODY
-                CALL 'public final fun foo1 (vararg xs: kotlin.Int): kotlin.Int declared in <root>' type=kotlin.Int origin=null
+        r: BLOCK type=<root>.KRunnable origin=ADAPTED_FUNCTION_REFERENCE
+          FUN ADAPTER_FOR_CALLABLE_REFERENCE name:foo1 visibility:local modality:FINAL <> () returnType:kotlin.Unit
+            BLOCK_BODY
+              CALL 'public final fun foo1 (vararg xs: kotlin.Int): kotlin.Int declared in <root>' type=kotlin.Int origin=null
+          TYPE_OP type=<root>.KRunnable origin=SAM_CONVERSION typeOperand=<root>.KRunnable
             FUNCTION_REFERENCE 'local final fun foo1 (): kotlin.Unit declared in <root>.testSamConversionOnAdapted' type=kotlin.Function0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=public final fun foo1 (vararg xs: kotlin.Int): kotlin.Int declared in <root>
diff --git a/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.kt.txt b/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.kt.txt
index 34748adea95..ce6ace75d9e 100644
--- a/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.kt.txt
+++ b/compiler/testData/ir/irText/expressions/funInterface/samConversionOnCallableReference.fir.kt.txt
@@ -37,7 +37,7 @@ fun testSamConversionOnAdapted() {
       foo1()
     }
 
-    ::foo1
-  } /*-> KRunnable */)
+    ::foo1 /*-> KRunnable */
+  })
 }
 
diff --git a/compiler/testData/ir/irText/expressions/suspendConversionWithFunInterfaces.fir.ir.txt b/compiler/testData/ir/irText/expressions/suspendConversionWithFunInterfaces.fir.ir.txt
index 19abe67cdba..e9c9c166b21 100644
--- a/compiler/testData/ir/irText/expressions/suspendConversionWithFunInterfaces.fir.ir.txt
+++ b/compiler/testData/ir/irText/expressions/suspendConversionWithFunInterfaces.fir.ir.txt
@@ -40,23 +40,23 @@ FILE fqName:<root> fileName:/suspendConversionWithFunInterfaces.kt
   FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.Unit
     BLOCK_BODY
       CALL 'public final fun foo1 (s: <root>.SuspendRunnable): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
-        s: TYPE_OP type=<root>.SuspendRunnable origin=SAM_CONVERSION typeOperand=<root>.SuspendRunnable
-          BLOCK type=kotlin.coroutines.SuspendFunction0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE
-            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:bar1 visibility:local modality:FINAL <> () returnType:kotlin.Unit [suspend]
-              BLOCK_BODY
-                CALL 'public final fun bar1 (): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+        s: BLOCK type=<root>.SuspendRunnable origin=ADAPTED_FUNCTION_REFERENCE
+          FUN ADAPTER_FOR_CALLABLE_REFERENCE name:bar1 visibility:local modality:FINAL <> () returnType:kotlin.Unit [suspend]
+            BLOCK_BODY
+              CALL 'public final fun bar1 (): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+          TYPE_OP type=<root>.SuspendRunnable origin=SAM_CONVERSION typeOperand=<root>.SuspendRunnable
             FUNCTION_REFERENCE 'local final fun bar1 (): kotlin.Unit declared in <root>.box' type=kotlin.coroutines.SuspendFunction0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=public final fun bar1 (): kotlin.Unit declared in <root>
       CALL 'public final fun foo1 (s: <root>.SuspendRunnable): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
-        s: TYPE_OP type=<root>.SuspendRunnable origin=SAM_CONVERSION typeOperand=<root>.SuspendRunnable
-          BLOCK type=kotlin.coroutines.SuspendFunction0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE
-            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:bar2 visibility:local modality:FINAL <> () returnType:kotlin.Unit [suspend]
-              BLOCK_BODY
-                CALL 'public final fun bar2 (s: kotlin.String): kotlin.Int declared in <root>' type=kotlin.Int origin=null
+        s: BLOCK type=<root>.SuspendRunnable origin=ADAPTED_FUNCTION_REFERENCE
+          FUN ADAPTER_FOR_CALLABLE_REFERENCE name:bar2 visibility:local modality:FINAL <> () returnType:kotlin.Unit [suspend]
+            BLOCK_BODY
+              CALL 'public final fun bar2 (s: kotlin.String): kotlin.Int declared in <root>' type=kotlin.Int origin=null
+          TYPE_OP type=<root>.SuspendRunnable origin=SAM_CONVERSION typeOperand=<root>.SuspendRunnable
             FUNCTION_REFERENCE 'local final fun bar2 (): kotlin.Unit declared in <root>.box' type=kotlin.coroutines.SuspendFunction0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=public final fun bar2 (s: kotlin.String): kotlin.Int declared in <root>
       CALL 'public final fun foo1 (s: <root>.SuspendRunnable): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
-        s: TYPE_OP type=<root>.SuspendRunnable origin=SAM_CONVERSION typeOperand=<root>.SuspendRunnable
-          BLOCK type=kotlin.coroutines.SuspendFunction0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE
-            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:bar3 visibility:local modality:FINAL <> () returnType:kotlin.Unit [suspend]
-              BLOCK_BODY
-                CALL 'public final fun bar3 (): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+        s: BLOCK type=<root>.SuspendRunnable origin=ADAPTED_FUNCTION_REFERENCE
+          FUN ADAPTER_FOR_CALLABLE_REFERENCE name:bar3 visibility:local modality:FINAL <> () returnType:kotlin.Unit [suspend]
+            BLOCK_BODY
+              CALL 'public final fun bar3 (): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+          TYPE_OP type=<root>.SuspendRunnable origin=SAM_CONVERSION typeOperand=<root>.SuspendRunnable
             FUNCTION_REFERENCE 'local final fun bar3 (): kotlin.Unit declared in <root>.box' type=kotlin.coroutines.SuspendFunction0<kotlin.Unit> origin=ADAPTED_FUNCTION_REFERENCE reflectionTarget=public final fun bar3 (): kotlin.Unit declared in <root>
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
index 401ba114083..159fb76388b 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
@@ -47105,12 +47105,6 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/sam/kt4753_2.kt");
         }
 
-        @Test
-        @TestMetadata("kt49226.kt")
-        public void testKt49226() throws Exception {
-            runTest("compiler/testData/codegen/box/sam/kt49226.kt");
-        }
-
         @Test
         @TestMetadata("kt50108.kt")
         public void testKt50108() throws Exception {