-VALGRIND_VERSION=$(valgrind --version)
-VALGRIND_MAJOR=$(expr "$VALGRIND_VERSION" : '[^0-9]*\([0-9]*\)')
-VALGRIND_MINOR=$(expr "$VALGRIND_VERSION" : '[^0-9]*[0-9]*\.\([0-9]*\)')
-test 3 -gt "$VALGRIND_MAJOR" ||
-test 3 -eq "$VALGRIND_MAJOR" -a 4 -gt "$VALGRIND_MINOR" ||
-TRACK_ORIGINS=--track-origins=yes
+case "$GIT_VALGRIND_MODE" in
+memcheck)
+ VALGRIND_VERSION=$(valgrind --version)
+ VALGRIND_MAJOR=$(expr "$VALGRIND_VERSION" : '[^0-9]*\([0-9]*\)')
+ VALGRIND_MINOR=$(expr "$VALGRIND_VERSION" : '[^0-9]*[0-9]*\.\([0-9]*\)')
+ test 3 -gt "$VALGRIND_MAJOR" ||
+ test 3 -eq "$VALGRIND_MAJOR" -a 4 -gt "$VALGRIND_MINOR" ||
+ TOOL_OPTIONS="$TOOL_OPTIONS --track-origins=yes"
+ ;;
+*)
+ TOOL_OPTIONS="--tool=$GIT_VALGRIND_MODE"
+esac