Subzero. Wasm. Implement sbrk and correctly do bounds checks.

pydir/wasm-run-torture-tests.py

 #!/usr/bin/env python2
 
 #===- subzero/wasm-run-torture-tests.py - Subzero WASM Torture Test Driver ===//
 #
 #                        The Subzero Code Generator
 #
 # This file is distributed under the University of Illinois Open Source
 # License. See LICENSE.TXT for details.
 #
 #===-----------------------------------------------------------------------===//
 
 from __future__ import print_function
 import argparse
 import glob
 import multiprocessing
 import os
 import Queue
 import shutil
 import StringIO
 import sys
 import threading
 
 IGNORED_TESTS = set([
-  'loop-2f.c.wasm',       # mmap not in MVP
-  'loop-2g.c.wasm',       # mmap not in MVP
+  # The remaining tests are known waterfall failures
 
-  '960521-1.c.wasm',      # sbrk
-  'ipa-sra-2.c.wasm',     # sbrk
-  'pr41463.c.wasm',       # sbrk
-  '20051113-1.c.wasm',    # sbrk
-  '990628-1.c.wasm',      # sbrk
-  'pr41395-2.c.wasm',     # sbrk
-  'pr42614.c.wasm',       # sbrk
-  'pr41395-1.c.wasm',     # sbrk
-  '920810-1.c.wasm',      # sbrk
-  '20000914-1.c.wasm',    # sbrk
-  'pr15262-1.c.wasm',     # sbrk
-  '941014-2.c.wasm',      # sbrk
-  'va-arg-21.c.wasm',     # sbrk
-  '20020406-1.c.wasm',    # sbrk
-
-  # waterfall known failures
   '20010122-1.c.wasm',
   '20031003-1.c.wasm',
   '20071018-1.c.wasm',
   '20071120-1.c.wasm',
   '20071220-1.c.wasm',
   '20071220-2.c.wasm',
   '20101011-1.c.wasm',
   'alloca-1.c.wasm',
   'bitfld-3.c.wasm',
   'bitfld-5.c.wasm',
@@ skipping 184 matching lines @@
 if len(run_failures) > 0:
   print()
   print("Run failures:")
   print("=============\n")
   for f in run_failures:
     print("    \033[1;33m" + f + "\033[1;m")
 
 print("\n\033[1;32m{}\033[1;m / \033[1;33m{}\033[1;m / {} tests passed"
       .format(run_count, compile_count - run_count,
               run_count + len(compile_failures) + len(run_failures)))