Allow passing StructInstanceMember to a python function

Author: czgdp1807

integration_tests/CMakeLists.txt

@@ -312,6 +312,7 @@ RUN(NAME structs_07          LABELS llvm c
 RUN(NAME structs_08          LABELS cpython llvm c)
 RUN(NAME structs_09          LABELS cpython llvm c)
 RUN(NAME structs_10          LABELS cpython llvm c)
+RUN(NAME structs_12          LABELS cpython llvm c)
 RUN(NAME sizeof_01          LABELS llvm c
         EXTRAFILES sizeof_01b.c)
 RUN(NAME enum_01             LABELS cpython llvm c)

integration_tests/structs_12.py

@@ -0,0 +1,17 @@
+from ltypes import i32, i16, dataclass
+
+@dataclass
+class A:
+    x: i32
+    y: i16
+
+def add_A_members(Ax: i32, Ay: i16) -> i32:
+    return Ax + i32(Ay)
+
+def test_A_member_passing():
+    a: A = A(0, i16(1))
+    sum_A_members: i32 = add_A_members(a.x, a.y)
+    print(sum_A_members)
+    assert sum_A_members == 1
+
+test_A_member_passing()

src/libasr/codegen/asr_to_llvm.cpp

@@ -5968,7 +5968,8 @@ class ASRToLLVMVisitor : public ASR::BaseVisitor<ASRToLLVMVisitor>
                                     builder0.SetInsertPoint(&entry_block, entry_block.getFirstInsertionPt());
                                     llvm::AllocaInst *target = builder0.CreateAlloca(
                                         target_type, nullptr, "call_arg_value");
-                                    if( ASR::is_a<ASR::ArrayItem_t>(*x.m_args[i].m_value) ) {
+                                    if( ASR::is_a<ASR::ArrayItem_t>(*x.m_args[i].m_value) ||
+                                        ASR::is_a<ASR::StructInstanceMember_t>(*x.m_args[i].m_value) ) {
                                         value = CreateLoad(value);
                                     }
                                     if( ASR::is_a<ASR::Tuple_t>(*arg_type) ||