Target Update To From lvalue Pointer (#824)

* Target Update To From LValue Pointer

* Added Exit Data

* fixed description to add map clause

---------

Co-authored-by: Raymundo Escobar <[email protected]>

tests/5.0/target/test_target_update_to_from_lvalue_ptr.cpp

@@ -0,0 +1,69 @@
+//===------ test_target_update_to_from_map_lvalue_pointer.cpp ----------------===//
+//
+// OpenMP API Version 5.0 Nov 2018
+//
+// This test evaluates the target update directive using to and from clauses, 
+// supporting various lvalue expressions, such as dereferenced pointers. 
+// Additionally, it examines the map clause and its handling of lvalue expressions 
+//===------------------------------------------------------------------------===//
+
+#include <omp.h>
+#include <iostream>
+#include "ompvv.h"
+
+int test_target_update() {
+	int errors = 0;
+	int before_value;
+	int after_value;
+	int* host_pointer = new int;
+	*host_pointer = -1;
+
+	#pragma omp target enter data map(to: *host_pointer)
+
+	//Before should be set to -1
+	#pragma omp target map(from: before_value)
+	{
+		before_value = *host_pointer;
+	}
+
+	//Host_pointer should now be 1
+	*host_pointer = 1;
+	// Copy data from the host variable to the device variable using a dereferenced pointer
+	#pragma omp target update to(*host_pointer)
+
+	#pragma omp target map(from: after_value)
+	{
+		after_value = *host_pointer;
+		*host_pointer = 2;
+	}
+
+	//Update host_pointer to 2
+	#pragma omp target update from(*host_pointer)
+
+	// Verify the results
+	if (*host_pointer != 2) {
+		errors++;
+	}
+	if (before_value != -1){
+		errors++;
+	}
+	if (after_value != 1){
+		errors++;
+	}
+
+	#pragma omp target exit data map(from: *host_pointer)
+	delete host_pointer;
+
+	OMPVV_TEST_AND_SET(errors, errors != 0);
+	return errors;
+}
+
+int main() {
+	OMPVV_TEST_OFFLOADING;
+	int errors = 0;
+
+	OMPVV_TEST_AND_SET_VERBOSE(errors, test_target_update() != 0);
+
+	OMPVV_REPORT_AND_RETURN(errors);
+}
+