[Truffle] JT: add --trace and document it.

jruby · Oct 23, 2016 · 12bfb90 · 12bfb90
1 parent 96d96a0
commit 12bfb90
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/tool/jt.rb b/tool/jt.rb
@@ -442,6 +442,8 @@ def help
           --server        run an instrumentation server on port 8080
           --igv           make sure IGV is running and dump Graal graphs after partial escape (implies --graal)
               --full      show all phases, not just up to the Truffle partial escape
+          --fg            disable background compilation
+          --trace         show compilation information on stdout
           --jdebug        run a JDWP debug server on #{JDEBUG_PORT}
           --jexception[s] print java exceptions
           --exec          use exec rather than system
@@ -563,7 +565,8 @@ def run(*args)
 
     {
       '--asm' => '--graal',
-      '--igv' => '--graal'
+      '--igv' => '--graal',
+      '--trace' => '--graal',
     }.each_pair do |arg, dep|
       args.unshift dep if args.include?(arg)
     end
@@ -627,6 +630,10 @@ def run(*args)
       jruby_args << "-J-Dgraal.TruffleBackgroundCompilation=false"
     end
 
+    if args.delete('--trace')
+      jruby_args << "-J-Dgraal.TraceTruffleCompilation=true"
+    end
+
     if args.delete('--no-print-cmd')
       args << { no_print_cmd: true }
     end