Update documentation about convergent attribute.
Summary:
Be more explicit about what 'convergent' means, and indicate that the
compiler may remove the attribute from a function if it can prove that
the function doesn't in fact execute any convergent ops.
Reviewers: resistor, jingyue, joker.eph
Subscribers: hfinkel, chandlerc, arsenm, jhen, tra, llvm-commits
Differential Revision: http://reviews.llvm.org/D17012
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260318
91177308-0d34-0410-b5e6-
96231b3b80d8
OSDN Git Service
