After building the LogCompilation utility the following build artifacts show up in src/utils/LogCompilation:

src/utils/LogCompilation/.classpath
src/utils/LogCompilation/.project
src/utils/LogCompilation/.settings/org.eclipse.jdt.apt.core.prefs
src/utils/LogCompilation/.settings/org.eclipse.jdt.core.prefs
src/utils/LogCompilation/.settings/org.eclipse.m2e.core.prefs
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/BasicLogEvent.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/CallSite.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/Compilation.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/Constants.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogCleanupReader.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogCompilation$MethodBCIPair.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogCompilation.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogEvent.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogParser$1.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogParser$2.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogParser$3.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogParser$Jvms.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogParser$LockElimination.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/LogParser.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/MakeNotEntrantEvent.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/Method.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/NMethod.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/Phase.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/UncommonTrap.class
src/utils/LogCompilation/target/classes/com/sun/hotspot/tools/compiler/UncommonTrapEvent.class
src/utils/LogCompilation/target/test-classes/com/sun/hotspot/tools/compiler/TestCompare.class
src/utils/LogCompilation/target/test-classes/com/sun/hotspot/tools/compiler/TestLogCompilation.class

These files are not ignored by Git currently, and as a result show up in various diff outputs (in my case in the list of files in a commit dialogue of the Git tool I'm using)

Since this is just noise, it would be nice to add these files/folders to the .gitignore