elijahtaylor/mono — pull request #1 by pasko (2011-10-17 11:31:17+00:00)
Title: -O2

The problem was inline assembly that was taken from x86-64 version assuming 8
bytes per mask while in NaCl we use 4 bytes per mask.

more info at: http://code.google.com/p/nativeclient/issues/detail?id=2255