Conditional flags for tests - set JS stack size for simulators.

There are separated JS and C stacks on simulators so for some stack
extensive tests (like mozilla/js1_5/extensions/regress-355497) might
cause a C stack overflow and that overflow is not caught by V8. It is
not an issue on real HW. Increasing the C stack also solves the problem
but we have already FLAG_sim_stack_size flag to control the JS stack
size.

This patch makes it possible to add flags to tests conditionally in
.status files.

TEST=mozilla/js1_5/extensions/regress-355497
BUG=v8:3152
LOG=N

Review URL: https://codereview.chromium.org/735723006

Cr-Commit-Position: refs/heads/master@{#25434}

test/mozilla/mozilla.status

@@ -866,9 +866,6 @@
 
 
 ['arch ==  arm64', {
-  # BUG(v8:3152): Runs out of stack in debug mode.
-  'js1_5/extensions/regress-355497': [FAIL_OK, ['mode == debug', SKIP]],
-
   # BUG(v8:3503): Times out in debug mode.
   'js1_5/Regress/regress-280769-2': [PASS, FAIL, ['mode == debug', SKIP]],
 }],  # 'arch ==  arm64'
@@ -893,6 +890,10 @@
   'js1_5/GC/regress-203278-2': [PASS, TIMEOUT, NO_VARIANTS],
 }],  # 'arch == mipsel or arch == mips64el'
 
+['arch == mips64el and simulator_run == True', {
+  'js1_5/extensions/regress-355497': [FAIL_OK, 'Flags: --sim-stack-size=512'],
+}],
+
 ['arch == mips', {
 
   # BUG(3251229): Times out when running new crankshaft test script.
@@ -931,5 +932,8 @@
   'js1_5/extensions/regress-330569': [SKIP],
   'js1_5/extensions/regress-351448': [SKIP],
   'js1_5/extensions/regress-336410-1': [SKIP],
+
+  #BUG(3152): Avoid C stack overflow.
+  'js1_5/extensions/regress-355497': [FAIL_OK, 'Flags: --sim-stack-size=512'],
 }],  # 'arch == arm64 and simulator_run == True'
 ]

tools/run-tests.py

@@ -491,7 +491,8 @@ def Execute(arch, mode, args, options, suites, workspace):
 
   # TODO(all): Combine "simulator" and "simulator_run".
   simulator_run = not options.dont_skip_simulator_slow_tests and \
-      arch in ['arm64', 'arm', 'mips'] and ARCH_GUESS and arch != ARCH_GUESS
+      arch in ['arm64', 'arm', 'mipsel', 'mips', 'mips64el'] and \
+      ARCH_GUESS and arch != ARCH_GUESS
   # Find available test suites and read test cases from them.
   variables = {
     "arch": arch,

tools/testrunner/local/testsuite.py

@@ -136,6 +136,9 @@ class TestSuite(object):
         t.outcomes = self.rules[testname]
         if statusfile.DoSkip(t.outcomes):
           continue  # Don't add skipped tests to |filtered|.
+        for outcome in t.outcomes:
+          if outcome.startswith('Flags: '):
+            t.flags += outcome[7:].split()
         flaky = statusfile.IsFlaky(t.outcomes)
         slow = statusfile.IsSlow(t.outcomes)
         pass_fail = statusfile.IsPassOrFail(t.outcomes)

tools/testrunner/objects/testcase.py

@@ -29,10 +29,10 @@
 from . import output
 
 class TestCase(object):
-  def __init__(self, suite, path, flags=[], dependency=None):
-    self.suite = suite  # TestSuite object
-    self.path = path    # string, e.g. 'div-mod', 'test-api/foo'
-    self.flags = flags  # list of strings, flags specific to this test case
+  def __init__(self, suite, path, flags=None, dependency=None):
+    self.suite = suite        # TestSuite object
+    self.path = path          # string, e.g. 'div-mod', 'test-api/foo'
+    self.flags = flags or []  # list of strings, flags specific to this test
     self.dependency = dependency  # |path| for testcase that must be run first
     self.outcomes = None
     self.output = None