Merge pull request swiftlang#72 from graydon/cperf-debug-opt-config

[run_cperf] Add debug-opt config, run multithreaded / multiprocess.

Author: graydon

Diff for: run_cperf

@@ -67,7 +67,7 @@ def main():
 
     args = parse_args()
     instances = [NEW_INSTANCE, OLD_INSTANCE]
-    configs = ['debug', 'wmo-onone', 'release']
+    configs = ['debug', 'debug-opt', 'wmo-onone', 'release']
 
     for instance in instances:
         workspace = get_workspace_for_instance(instance, args)
@@ -217,11 +217,14 @@ def get_stats_dir(instance, variant):
 
 
 def get_actual_config_and_flags(config, stats):
-    flags = ("-j 1 -num-threads 1 -stats-output-dir '%s'" % stats)
-    # Handle wmo-onone as a pseudo-config
+    flags = ("-stats-output-dir '%s'" % stats)
+    # Handle as a pseudo-configs
     if config == 'wmo-onone':
         flags += ' -wmo -Onone '
         config = 'release'
+    elif config == 'debug-opt':
+        flags += ' -O '
+        config = 'debug'
     return (config, flags)