[flang][hlfir] Fixed actual argument type for passing to poly dummy.

The `none` type cannot be used for creating AssociateOp for the actual
argument. I think it should be always okay to compute the storage
data type based on the actual argument expression.

Author: vzakhari

flang/lib/Lower/ConvertCall.cpp

@@ -854,7 +854,10 @@ static PreparedDummyArgument preparePresentUserCallActualArgument(
     const PreparedActualArgument &preparedActual, mlir::Type dummyType,
     const Fortran::lower::CallerInterface::PassedEntity &arg,
     const Fortran::lower::SomeExpr &expr,
-    Fortran::evaluate::FoldingContext &foldingContext) {
+    Fortran::lower::AbstractConverter &converter) {
+
+  Fortran::evaluate::FoldingContext &foldingContext =
+      converter.getFoldingContext();
 
   // Step 1: get the actual argument, which includes addressing the
   // element if this is an array in an elemental call.
@@ -931,8 +934,9 @@ static PreparedDummyArgument preparePresentUserCallActualArgument(
     if (mustSetDynamicTypeToDummyType)
       TODO(loc, "passing polymorphic array expression to non polymorphic "
                 "contiguous dummy");
+    mlir::Type storageType = converter.genType(expr);
     hlfir::AssociateOp associate = hlfir::genAssociateExpr(
-        loc, builder, entity, dummyType, "adapt.valuebyref");
+        loc, builder, entity, storageType, "adapt.valuebyref");
     entity = hlfir::Entity{associate.getBase()};
     preparedDummy.setExprAssociateCleanUp(associate.getFirBase(),
                                           associate.getMustFreeStrorageFlag());
@@ -983,10 +987,10 @@ static PreparedDummyArgument prepareUserCallActualArgument(
     const PreparedActualArgument &preparedActual, mlir::Type dummyType,
     const Fortran::lower::CallerInterface::PassedEntity &arg,
     const Fortran::lower::SomeExpr &expr,
-    Fortran::evaluate::FoldingContext &foldingContext) {
+    Fortran::lower::AbstractConverter &converter) {
   if (!preparedActual.handleDynamicOptional())
     return preparePresentUserCallActualArgument(
-        loc, builder, preparedActual, dummyType, arg, expr, foldingContext);
+        loc, builder, preparedActual, dummyType, arg, expr, converter);
 
   // Conditional dummy argument preparation. The actual may be absent
   // at runtime, causing any addressing, copy, and packaging to have
@@ -1007,8 +1011,8 @@ static PreparedDummyArgument prepareUserCallActualArgument(
   mlir::Block *preparationBlock = &badIfOp.getThenRegion().front();
   builder.setInsertionPointToStart(preparationBlock);
   PreparedDummyArgument unconditionalDummy =
-      preparePresentUserCallActualArgument(
-          loc, builder, preparedActual, dummyType, arg, expr, foldingContext);
+      preparePresentUserCallActualArgument(loc, builder, preparedActual,
+                                           dummyType, arg, expr, converter);
   builder.restoreInsertionPoint(insertPt);
 
   // TODO: when forwarding an optional to an optional of the same kind
@@ -1100,9 +1104,9 @@ genUserCall(PreparedActualArguments &loweredActuals,
     case PassBy::Box:
     case PassBy::BaseAddress:
     case PassBy::BoxChar: {
-      PreparedDummyArgument preparedDummy = prepareUserCallActualArgument(
-          loc, builder, *preparedActual, argTy, arg, *expr,
-          callContext.converter.getFoldingContext());
+      PreparedDummyArgument preparedDummy =
+          prepareUserCallActualArgument(loc, builder, *preparedActual, argTy,
+                                        arg, *expr, callContext.converter);
       if (preparedDummy.maybeCleanUp.has_value())
         callCleanUps.emplace_back(std::move(*preparedDummy.maybeCleanUp));
       caller.placeInput(arg, preparedDummy.dummy);

flang/test/HLFIR/call_with_poly_dummy.f90

@@ -0,0 +1,44 @@
+! RUN: bbc -polymorphic-type -emit-fir -hlfir %s -o - | FileCheck %s
+
+! Test passing arguments to subprograms with polymorphic dummy arguments.
+
+! CHECK-LABEL:   func.func @_QPtest1() {
+! CHECK:           %[[VAL_0:.*]] = arith.constant 17 : i32
+! CHECK:           %[[VAL_1:.*]]:3 = hlfir.associate %[[VAL_0]] {uniq_name = "adapt.valuebyref"} : (i32) -> (!fir.ref<i32>, !fir.ref<i32>, i1)
+! CHECK:           %[[VAL_2:.*]] = fir.embox %[[VAL_1]]#0 : (!fir.ref<i32>) -> !fir.box<i32>
+! CHECK:           %[[VAL_3:.*]] = fir.rebox %[[VAL_2]] : (!fir.box<i32>) -> !fir.class<none>
+! CHECK:           fir.call @_QPcallee(%[[VAL_3]]) fastmath<contract> : (!fir.class<none>) -> ()
+! CHECK:           hlfir.end_associate %[[VAL_1]]#1, %[[VAL_1]]#2 : !fir.ref<i32>, i1
+! CHECK:           return
+! CHECK:         }
+subroutine test1
+  interface
+     subroutine callee(x)
+       class(*) x
+     end subroutine callee
+  end interface
+  call callee(17)
+end subroutine test1
+
+! CHECK-LABEL:   func.func @_QPtest2(
+! CHECK-SAME:                        %[[VAL_0:.*]]: !fir.ref<f32> {fir.bindc_name = "x"}) {
+! CHECK:           %[[VAL_1:.*]]:2 = hlfir.declare %[[VAL_0]] {uniq_name = "_QFtest2Ex"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
+! CHECK:           %[[VAL_2:.*]] = fir.load %[[VAL_1]]#0 : !fir.ref<f32>
+! CHECK:           %[[VAL_3:.*]] = arith.constant 0.000000e+00 : f32
+! CHECK:           %[[VAL_4:.*]] = arith.cmpf oeq, %[[VAL_2]], %[[VAL_3]] : f32
+! CHECK:           %[[VAL_5:.*]] = fir.convert %[[VAL_4]] : (i1) -> !fir.logical<4>
+! CHECK:           %[[VAL_6:.*]]:3 = hlfir.associate %[[VAL_5]] {uniq_name = "adapt.valuebyref"} : (!fir.logical<4>) -> (!fir.ref<!fir.logical<4>>, !fir.ref<!fir.logical<4>>, i1)
+! CHECK:           %[[VAL_7:.*]] = fir.embox %[[VAL_6]]#0 : (!fir.ref<!fir.logical<4>>) -> !fir.box<!fir.logical<4>>
+! CHECK:           %[[VAL_8:.*]] = fir.rebox %[[VAL_7]] : (!fir.box<!fir.logical<4>>) -> !fir.class<none>
+! CHECK:           fir.call @_QPcallee(%[[VAL_8]]) fastmath<contract> : (!fir.class<none>) -> ()
+! CHECK:           hlfir.end_associate %[[VAL_6]]#1, %[[VAL_6]]#2 : !fir.ref<!fir.logical<4>>, i1
+! CHECK:           return
+! CHECK:         }
+subroutine test2(x)
+  interface
+     subroutine callee(x)
+       class(*) x
+     end subroutine callee
+  end interface
+  call callee(x.eq.0)
+end subroutine test2