[deoptimizer] Potentially deopt into debug bytecode.

test/mjsunit/mjsunit.status

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 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
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@@ skipping 39 matching lines @@
   'setters-on-elements': [PASS, FAIL],
 
   # Issue 3641: The new 'then' semantics suppress some exceptions.
   # These tests may be changed or removed when 'chain' is deprecated.
   'es6/debug-promises/reject-with-throw-in-reject': [FAIL],
   'es6/debug-promises/reject-with-undefined-reject': [FAIL],
   'es6/debug-promises/reject-with-invalid-reject': [FAIL],
 
   # Issue 3660: Replacing activated TurboFan frames by unoptimized code does
   # not work, but we expect it to not crash.
-  'debug-step-turbofan': [FAIL],
+  'debug-step-turbofan': [PASS, FAIL],

[rmcilroy, 2016/08/23 12:44:25]

Could we move this to be a fail for the "not ignition_staging" variant and a
pass for ignition_staging? If it ends up being complicated don't worry, this is
fine.

[Michael Starzinger, 2016/08/23 12:47:07]

I thought about doing this, but the problem is that the "default" variant is
also failing (only passing for ignition_staging and ignition_turbofan). And I
was wary about adding a section for the "default" variant. That seemed strange
to me. WDYT?

 
   ##############################################################################
   # Too slow in debug mode with --stress-opt mode.
   'regress/regress-2318': [PASS, ['mode == debug', SKIP]],
   'regress/regress-create-exception': [PASS, ['mode == debug', SKIP]],
 
   ##############################################################################
   # Too slow in debug mode for validation of elements.
   'regress/regress-430201': [PASS, ['mode == debug', SKIP]],
   'regress/regress-430201b': [PASS, ['mode == debug', SKIP]],
@@ skipping 748 matching lines @@
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long.
   'array-functions-prototype-misc': [SKIP],
 
   # Stack overflow.
   'big-array-literal': [SKIP],
 }],  # 'gcov_coverage'
 
 ]