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    • Subzero: Allow overriding command-line args from the browser. · fd07ad08
      Jim Stichnoth authored 
      In the browser build only, allows arguments to be explicitly passed to pnacl-sz, in two ways:

1. The SZARGFILE envvar contains the name of a file with arguments, one per line.  For each line, initial whitespace is ignored, and lines starting with the '#' comment character are also ignored.

2. The SZARGLIST envvar contains all the arguments, separated by the '|' character.

Chrome needs to be started with special options to allow the envvars to be passed through, and also to allow access to the local file system.

In addition, specifying "-log=/dev/stderr" or "-o /dev/stderr" gets mapped to std::cerr, in the same way "-" gets mapped to std::cout.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4370
R=jpp@chromium.org

Review URL: https://codereview.chromium.org/1903553004 .
  41. 19 Apr, 2016 1 commit
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  51. 11 Apr, 2016 2 commits
    • Reduce wait times for very large PEXE files. · 3018cf2b
      Karl Schimpf authored 
      Investigated how many parser waits occur when the OptQ fills up. The
current implementation has 64k entries, which for 10Mb examples, never
fill up (but do come close to filling up).

To test, I dropped the queue size down. The numbers I got was that the
queue size plus the number of parse waits was within 2% of the total
number of function blocks. Hence, once OptQ fills up a lot of slow
notifies get applied.

Hence, for scaling, I modifed the code to not wake up the parse thread
(during a pop) until OptQ got half empty. The results were that once
the Opt got up to size 1024, less than 100 notifies would be
issued. From 1024 on, as the queue size doubled, the number of
notifies would drop roughly in half.

Based on this, I decided to add the feature that the OptQ did not wake
up the waiting parse thread until half empty. Since the queue size was
not shrunk, this CL shouldn't add any overhead for the PEXES we have,
and very few waits with significantly largers than the current (10Mb)
PEXES.

BUG=None
R=jpp@chromium.org

Review URL: https://codereview.chromium.org/1877873002 .
    • Add "vmov.<dt> <Qd>, #<imm>" to integrated ARM assembler. · b627f094
      Karl Schimpf authored 
      Adds the VMOV instruction to the integrated assembler. Because #<imm> is
complex, and we don't currently have a special ARM class to encode
constants defined by ARM method AdvSIMDExpandImm(), it currently only
accepts (nonnegative) integer32 constants that can fit into 8 bits.

There are no tests for this instruction, since there currently no
callers to this instruction. However, John will be checking in a CL
shortly that will use this instruction.

Add example generator for vector add.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4334
R=jpp@chromium.org

Review URL: https://codereview.chromium.org/1879463003 .