Subzero: Run sandboxed cross tests, and do some cleanup.

pydir/run-pnacl-sz.py

Index: pydir/run-pnacl-sz.py
diff --git a/pydir/run-pnacl-sz.py b/pydir/run-pnacl-sz.py
index 65eb22bf70c10436f9b2b7eba409240c6354ee48..ed320ee42d303052c4f42686b18a9e56df492aa2 100755
--- a/pydir/run-pnacl-sz.py
+++ b/pydir/run-pnacl-sz.py
@@ -112,7 +112,8 @@ def main():
       asm_temp.close()
     if args.assemble and args.filetype != 'obj':
       cmd += ['|', os.path.join(llvm_bin_path, 'llvm-mc'),
-              '-triple=i686-none-nacl',
+              # TODO(stichnot): use i686-nacl?

[jvoung (off chromium), 2015/03/03 22:58:02]

What are the issues with deciding between i686 or i686-nacl?

[Jim Stichnoth, 2015/03/03 23:18:51]

If we are testing low-level aspects of sandboxing, and use --assemble, we would
probably want to use -triple=i686-nacl.  Maybe the TODO should say to add a
--sandbox argument and then select between i686 and i686-nacl?  Thoughts?

[jvoung (off chromium), 2015/03/03 23:52:53]

Yeah I think clarify in the TODO to choose between i686 and i686-nacl if
sandboxing is being tested or not?

[Jim Stichnoth, 2015/03/04 00:12:58]

Done.

+              '-triple=i686',
               '-filetype=obj', '-o', asm_temp.name]
     elif asm_temp:
       cmd += ['-o', asm_temp.name]