JS: support integer overflow semantics for unary minus operator

See KT-19290

js/js.translator/src/org/jetbrains/kotlin/js/translate/intrinsic/functions/factories/PrimitiveUnaryOperationFIF.java

@@ -61,6 +61,7 @@ public enum PrimitiveUnaryOperationFIF implements FunctionIntrinsicFactory {
     private static final DescriptorPredicate DEC_OPERATION_FOR_BYTE = pattern("Byte.dec");
     private static final DescriptorPredicate INC_OPERATION_FOR_SHORT = pattern("Short.inc");
     private static final DescriptorPredicate DEC_OPERATION_FOR_SHORT = pattern("Short.dec");
+    private static final DescriptorPredicate NEG_OPERATION_FOR_INT = pattern("Int.unaryMinus");
 
     @NotNull
     private static final DescriptorPredicate INC_OPERATION_FOR_PRIMITIVE_NUMBER = pattern("Float|Double.inc()");
@@ -152,6 +153,20 @@ public enum PrimitiveUnaryOperationFIF implements FunctionIntrinsicFactory {
         }
     };
 
+    private static final FunctionIntrinsicWithReceiverComputed NUMBER_NEG_INTRINSIC = new FunctionIntrinsicWithReceiverComputed() {
+        @NotNull
+        @Override
+        public JsExpression apply(
+                @Nullable JsExpression receiver,
+                @NotNull List<? extends JsExpression> arguments,
+                @NotNull TranslationContext context
+        ) {
+            assert receiver != null;
+            assert arguments.size() == 0;
+            return new JsPrefixOperation(JsUnaryOperator.NEG, receiver);
+        }
+    };
+
     private static abstract class UnaryOperationInstrinsicBase extends FunctionIntrinsicWithReceiverComputed {
         @NotNull
         public abstract JsExpression doApply(@NotNull JsExpression receiver, @NotNull TranslationContext context);
@@ -265,6 +280,9 @@ public enum PrimitiveUnaryOperationFIF implements FunctionIntrinsicFactory {
             return NUMBER_DEC_INTRINSIC;
         }
 
+        if (NEG_OPERATION_FOR_INT.test(descriptor)) {
+            return new IntOverflowIntrinsic(NUMBER_NEG_INTRINSIC);
+        }
 
         Name name = descriptor.getName();
 

js/js.translator/testData/box/number/intOverflow.kt

@@ -26,5 +26,10 @@ fun box(): String {
     v = bigValue() * bigValue()
     if (v != 16) return "fail6: $v"
 
+    v = -minInt()
+    if (v != Int.MIN_VALUE) return "fail7: $v"
+
     return "OK"
-}
+}
+
+fun minInt() = Int.MIN_VALUE