diff --git a/CMakeLists.txt b/CMakeLists.txt
index b443eff..87c7b35 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,11 +43,26 @@ set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
 if(ENABLE_PROFILE)
   message(STATUS "Enabling profile flags.")
   string (REPLACE "-DNDEBUG" "" CMAKE_C_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE})
-  string (REPLACE "-O3" "" CMAKE_C_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE})
-  string (REPLACE "-O3" "" CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
   string (REPLACE "-DNDEBUG" "" CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
-  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2 -g -ggdb -fno-omit-frame-pointer")
-  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2  -g -ggdb -fno-omit-frame-pointer")
+  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -g -ggdb -fno-omit-frame-pointer")
+  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -g -ggdb -fno-omit-frame-pointer")
+  # enable vectorization report flags
+  # using Clang
+  if (CMAKE_C_COMPILER_ID MATCHES "Clang")
+  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Rpass-analysis=loop-vectorize -Rpass=loop-vectorize -Rpass-missed=loop-vectorize")
+
+  # using GCC
+  elseif (CMAKE_C_COMPILER_ID STREQUAL "GNU")
+  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -ftree-vectorize -fopt-info-vec-all")
+
+  # using Intel C++
+  elseif (CMAKE_C_COMPILER_ID STREQUAL "Intel")
+  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -qopt-report=5 -qopt-report-phase=vec")
+
+  # using Visual Studio C++
+  elseif (CMAKE_C_COMPILER_ID STREQUAL "MSVC")
+  # TBD
+  endif()
 endif(ENABLE_PROFILE)
 
 # --- System Libraries ---
diff --git a/Makefile b/Makefile
index aea45f4..b79b9af 100644
--- a/Makefile
+++ b/Makefile
@@ -119,6 +119,9 @@ clean: distclean
 distclean:
 	rm -rf build/* 
 
+profile: clean
+	( mkdir -p build; cd build ; cmake $(CMAKE_PROFILE_OPTIONS) .. ; $(MAKE) VERBOSE=1 2> $(basename $@).compiler_stedrr_output.txt )
+
 bench: clean
 	( mkdir -p build; cd build ; cmake $(CMAKE_PROFILE_OPTIONS) .. ; $(MAKE) VERBOSE=1 )
 	$(SHOW) build/tests/histogram_benchmark --benchmark_min_time=10