Add test driver with the notion of perf tests.

tools/run_perf.py

Index: tools/run_perf.py
diff --git a/tools/run_benchmarks.py b/tools/run_perf.py
similarity index 88%
copy from tools/run_benchmarks.py
copy to tools/run_perf.py
index cc0bb2c5b87f15ae9e386101e37e6fbdec58d3ca..0022c8e5d02f9e46b1da0696e4cb7e5a38c5435e 100755
--- a/tools/run_benchmarks.py
+++ b/tools/run_perf.py
@@ -6,11 +6,11 @@
 """
 Performance runner for d8.
 
-Call e.g. with tools/run-benchmarks.py --arch ia32 some_suite.json
+Call e.g. with tools/run-perf.py --arch ia32 some_suite.json
 
 The suite json format is expected to be:
 {
-  "path": <relative path chunks to benchmark resources and main file>,
+  "path": <relative path chunks to perf resources and main file>,
   "name": <optional suite name, file name is default>,
   "archs": [<architecture name for which this suite is run>, ...],
   "binary": <name of binary to run, default "d8">,
@@ -18,13 +18,13 @@ The suite json format is expected to be:
   "run_count": <how often will this suite run (optional)>,
   "run_count_XXX": <how often will this suite run for arch XXX (optional)>,
   "resources": [<js file to be loaded before main>, ...]
-  "main": <main js benchmark runner file>,
+  "main": <main js perf runner file>,
   "results_regexp": <optional regexp>,
   "results_processor": <optional python results processor script>,
   "units": <the unit specification for the performance dashboard>,
-  "benchmarks": [
+  "tests": [
     {
-      "name": <name of the benchmark>,
+      "name": <name of the trace>,
       "results_regexp": <optional more specific regexp>,
       "results_processor": <optional python results processor script>,
       "units": <the unit specification for the performance dashboard>,
@@ -32,23 +32,23 @@ The suite json format is expected to be:
   ]
 }
 
-The benchmarks field can also nest other suites in arbitrary depth. A suite
+The tests field can also nest other suites in arbitrary depth. A suite
 with a "main" file is a leaf suite that can contain one more level of
-benchmarks.
+tests.
 
 A suite's results_regexp is expected to have one string place holder
-"%s" for the benchmark name. A benchmark's results_regexp overwrites suite
+"%s" for the trace name. A trace's results_regexp overwrites suite
 defaults.
 
 A suite's results_processor may point to an optional python script. If
-specified, it is called after running the benchmarks like this (with a path
+specified, it is called after running the tests like this (with a path
 relatve to the suite level's path):
 <results_processor file> <same flags as for d8> <suite level name> <output>
 
 The <output> is a temporary file containing d8 output. The results_regexp will
 be applied to the output of this script.
 
-A suite without "benchmarks" is considered a benchmark itself.
+A suite without "tests" is considered a performance test itself.
 
 Full example (suite with one runner):
 {
@@ -60,7 +60,7 @@ Full example (suite with one runner):
   "main": "run.js",
   "results_regexp": "^%s: (.+)$",
   "units": "score",
-  "benchmarks": [
+  "tests": [
     {"name": "Richards"},
     {"name": "DeltaBlue"},
     {"name": "NavierStokes",
@@ -75,7 +75,7 @@ Full example (suite with several runners):
   "archs": ["ia32", "x64"],
   "run_count": 5,
   "units": "score",
-  "benchmarks": [
+  "tests": [
     {"name": "Richards",
      "path": ["richards"],
      "main": "run.js",
@@ -150,7 +150,7 @@ class Results(object):
 
 
 class Node(object):
-  """Represents a node in the benchmark suite tree structure."""
+  """Represents a node in the suite tree structure."""
   def __init__(self, *args):
     self._children = []
 
@@ -175,7 +175,7 @@ class DefaultSentinel(Node):
 
 
 class Graph(Node):
-  """Represents a benchmark suite definition.
+  """Represents a suite definition.
 
   Can either be a leaf or an inner node that provides default values.
   """
@@ -221,7 +221,7 @@ class Graph(Node):
 
 
 class Trace(Graph):
-  """Represents a leaf in the benchmark suite tree structure.
+  """Represents a leaf in the suite tree structure.
 
   Handles collection of measurements.
   """
@@ -237,17 +237,17 @@ class Trace(Graph):
       self.results.append(
           re.search(self.results_regexp, stdout, re.M).group(1))
     except:
-      self.errors.append("Regexp \"%s\" didn't match for benchmark %s."
+      self.errors.append("Regexp \"%s\" didn't match for test %s."
                          % (self.results_regexp, self.graphs[-1]))
 
     try:
       if self.stddev_regexp and self.stddev:
-        self.errors.append("Benchmark %s should only run once since a stddev "
-                           "is provided by the benchmark." % self.graphs[-1])
+        self.errors.append("Test %s should only run once since a stddev "
+                           "is provided by the test." % self.graphs[-1])
       if self.stddev_regexp:
         self.stddev = re.search(self.stddev_regexp, stdout, re.M).group(1)
     except:
-      self.errors.append("Regexp \"%s\" didn't match for benchmark %s."
+      self.errors.append("Regexp \"%s\" didn't match for test %s."
                          % (self.stddev_regexp, self.graphs[-1]))
 
   def GetResults(self):
@@ -260,7 +260,7 @@ class Trace(Graph):
 
 
 class Runnable(Graph):
-  """Represents a runnable benchmark suite definition (i.e. has a main file).
+  """Represents a runnable suite definition (i.e. has a main file).
   """
   @property
   def main(self):
@@ -269,7 +269,7 @@ class Runnable(Graph):
   def ChangeCWD(self, suite_path):
     """Changes the cwd to to path defined in the current graph.
 
-    The benchmarks are supposed to be relative to the suite configuration.
+    The tests are supposed to be relative to the suite configuration.
     """
     suite_dir = os.path.abspath(os.path.dirname(suite_path))
     bench_dir = os.path.normpath(os.path.join(*self.path))
@@ -314,7 +314,7 @@ class Runnable(Graph):
     return res
 
 class RunnableTrace(Trace, Runnable):
-  """Represents a runnable benchmark suite definition that is a leaf."""
+  """Represents a runnable suite definition that is a leaf."""
   def __init__(self, suite, parent, arch):
     super(RunnableTrace, self).__init__(suite, parent, arch)
 
@@ -326,7 +326,7 @@ class RunnableTrace(Trace, Runnable):
 
 
 class RunnableGeneric(Runnable):
-  """Represents a runnable benchmark suite definition with generic traces."""
+  """Represents a runnable suite definition with generic traces."""
   def __init__(self, suite, parent, arch):
     super(RunnableGeneric, self).__init__(suite, parent, arch)
 
@@ -359,21 +359,21 @@ def MakeGraph(suite, arch, parent):
     return Trace(suite, parent, arch)
   elif suite.get("main"):
     # A main file makes this graph runnable.
-    if suite.get("benchmarks"):
-      # This graph has subbenchmarks (traces).
+    if suite.get("tests"):
+      # This graph has subgraphs (traces).
       return Runnable(suite, parent, arch)
     else:
-      # This graph has no subbenchmarks, it's a leaf.
+      # This graph has no subgraphs, it's a leaf.
       return RunnableTrace(suite, parent, arch)
   elif suite.get("generic"):
     # This is a generic suite definition. It is either a runnable executable
     # or has a main js file.
     return RunnableGeneric(suite, parent, arch)
-  elif suite.get("benchmarks"):
+  elif suite.get("tests"):
     # This is neither a leaf nor a runnable.
     return Graph(suite, parent, arch)
   else:  # pragma: no cover
-    raise Exception("Invalid benchmark suite configuration.")
+    raise Exception("Invalid suite configuration.")
 
 
 def BuildGraphs(suite, arch, parent=None):
@@ -387,7 +387,7 @@ def BuildGraphs(suite, arch, parent=None):
     return None
 
   graph = MakeGraph(suite, arch, parent)
-  for subsuite in suite.get("benchmarks", []):
+  for subsuite in suite.get("tests", []):
     BuildGraphs(subsuite, arch, graph)
   parent.AppendChild(graph)
   return graph
@@ -404,7 +404,7 @@ def FlattenRunnables(node):
       for result in FlattenRunnables(child):
         yield result
   else:  # pragma: no cover
-    raise Exception("Invalid benchmark suite configuration.")
+    raise Exception("Invalid suite configuration.")
 
 
 # TODO: Implement results_processor.
@@ -447,7 +447,7 @@ def Main(args):
     path = os.path.abspath(path)
 
     if not os.path.exists(path):  # pragma: no cover
-      results.errors.append("Benchmark file %s does not exist." % path)
+      results.errors.append("Configuration file %s does not exist." % path)
       continue
 
     with open(path) as f: