Do not apply constant folding for non built-in functions

#KT-15872 Fixed

compiler/frontend/src/org/jetbrains/kotlin/resolve/constants/evaluate/ConstantExpressionEvaluator.kt

@@ -449,6 +449,8 @@ private class ConstantExpressionEvaluatorVisitor(
     private fun evaluateCall(callExpression: KtExpression, receiverExpression: KtExpression, expectedType: KotlinType?): CompileTimeConstant<*>? {
         val resolvedCall = callExpression.getResolvedCall(trace.bindingContext) ?: return null
 
+        if (!KotlinBuiltIns.isBuiltIn(resolvedCall.resultingDescriptor)) return null
+
         val resultingDescriptorName = resolvedCall.resultingDescriptor.name
 
         val argumentForReceiver = createOperationArgumentForReceiver(resolvedCall, receiverExpression) ?: return null

compiler/testData/codegen/box/operatorConventions/infixFunctionOverBuiltinMember.kt

@@ -0,0 +1,18 @@
+infix fun Int.rem(other: Int) = 10
+infix operator fun Int.minus(other: Int): Int = 20
+
+fun box(): String {
+    val a = 5 rem 2
+    if (a != 10) return "fail 1"
+
+    val b = 5 minus 3
+    if (b != 20) return "fail 2"
+
+    val a1 = 5.rem(2)
+    if (a1 != 1) return "fail 3"
+
+    val b2 = 5.minus(3)
+    if (b2 != 2) return "fail 4"
+
+    return "OK"
+}

compiler/testData/codegen/light-analysis/operatorConventions/infixFunctionOverBuiltinMember.txt

@@ -0,0 +1,6 @@
+@kotlin.Metadata
+public final class InfixFunctionOverBuiltinMemberKt {
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static method minus(p0: int, p1: int): int
+    public final static method rem(p0: int, p1: int): int
+}

compiler/testData/diagnostics/tests/evaluate/infixFunOverBuiltinMemberInConst.kt

@@ -0,0 +1,10 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE, -UNUSED_PARAMETER
+
+infix fun Int.rem(other: Int) = 10
+infix operator fun Int.minus(other: Int): Int = 20
+
+const val a1 = <!CONST_VAL_WITH_NON_CONST_INITIALIZER!>(-5) rem 2<!>
+const val a2 = (-5).rem(2)
+
+const val b1 = <!CONST_VAL_WITH_NON_CONST_INITIALIZER!>5 minus 3<!>
+const val b2 = 5.minus(3)

compiler/testData/diagnostics/tests/evaluate/infixFunOverBuiltinMemberInConst.txt

@@ -0,0 +1,8 @@
+package
+
+public const val a1: kotlin.Int
+public const val a2: kotlin.Int = -1
+public const val b1: kotlin.Int
+public const val b2: kotlin.Int = 2
+public operator infix fun kotlin.Int.minus(/*0*/ other: kotlin.Int): kotlin.Int
+public infix fun kotlin.Int.rem(/*0*/ other: kotlin.Int): kotlin.Int

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

@@ -11141,6 +11141,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             doTest(fileName);
         }
 
+        @TestMetadata("infixFunctionOverBuiltinMember.kt")
+        public void testInfixFunctionOverBuiltinMember() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/operatorConventions/infixFunctionOverBuiltinMember.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("kt14201.kt")
         public void testKt14201() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/operatorConventions/kt14201.kt");

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -7378,6 +7378,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("infixFunOverBuiltinMemberInConst.kt")
+            public void testInfixFunOverBuiltinMemberInConst() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/evaluate/infixFunOverBuiltinMemberInConst.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("intOverflow.kt")
             public void testIntOverflow() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/evaluate/intOverflow.kt");

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

@@ -11141,6 +11141,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             doTest(fileName);
         }
 
+        @TestMetadata("infixFunctionOverBuiltinMember.kt")
+        public void testInfixFunctionOverBuiltinMember() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/operatorConventions/infixFunctionOverBuiltinMember.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("kt14201.kt")
         public void testKt14201() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/operatorConventions/kt14201.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -12888,6 +12888,12 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             doTest(fileName);
         }
 
+        @TestMetadata("infixFunctionOverBuiltinMember.kt")
+        public void testInfixFunctionOverBuiltinMember() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/operatorConventions/infixFunctionOverBuiltinMember.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("kt14201.kt")
         public void testKt14201() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/operatorConventions/kt14201.kt");