There are several compiler tests which break jtreg syntax requirements:

compiler/codecache/jmx/PeakUsageTest.java Error. Parse Exception: `@library' must appear before first `@run'
compiler/compilercontrol/jcmd/ClearDirectivesFileStackTest.java Error. Parse Exception: `@library' must appear before first `@run'
compiler/jvmci/compilerToVM/GetResolvedJavaTypeTest.java Error. Parse Exception: `@library' must appear before first `@run'
compiler/startup/SmallCodeCacheStartup.java Error. Parse Exception: `@library' must appear before first `@run'

They should be updated to move the @ignore tag after @library