Add unit tests for abstract interpretation.

OMR_ARCH_POWER flag is removed from fvtest/CMakeLists.txt.
Since now it contains tests also for non-arch platforms.

Tests including:
- Tests on getters and setters.
- Tests on clone operations.
- Tests on merge operations.
- Tests on push/pop operations of stack.

Issue: eclipse-omr#5488

Signed-off-by: cijie xia <[email protected]>

fvtest/CMakeLists.txt

@@ -65,10 +65,5 @@ endif()
 if(OMR_JITBUILDER_TEST)
 	add_subdirectory(tril)
 	add_subdirectory(compilertriltest)
-
-	# Currently, there are only unit tests for the Power codegen. To avoid unnecessarily compiling and running an
-	# executable with no tests, compilerunittest is thus disabled on other architectures.
-	if(OMR_ARCH_POWER)
-		add_subdirectory(compilerunittest)
-	endif()
+	add_subdirectory(compilerunittest)
 endif()

fvtest/compilerunittest/CMakeLists.txt

@@ -41,6 +41,11 @@ if(OMR_ARCH_POWER)
 	)
 endif()
 
+
+list(APPEND COMPCGTEST_FILES
+	abstractinterpreter/AbsInterpreterTest.cpp
+)
+
 omr_add_executable(compunittest NOWARNINGS ${COMPCGTEST_FILES})
 
 # For the time being, link against Tril even though we don't really need Tril itself. This is done

fvtest/compilerunittest/CodeGenTest.hpp

@@ -33,8 +33,6 @@ class CodeGenTest : public TRTest::CompilerUnitTest {
     }
 
     TR::CodeGenerator* cg() { return _comp.cg(); }
-
-private:
     TR::Node *fakeNode;
 };