[PATCH] D18625: [Speculation] Add a SpeculativeExecution mode where the pass does nothing unless TTI::hasBranchDivergence() is true.

[Justin Lebar via llvm-commits]

jlebar added a comment.

> Please add a pass-local flag that allows you to test the pass in both modes, and some test cases exercising the behavior here.


Chandler, how would you feel if I added a test to http://reviews.llvm.org/D18626 instead?  (The test would check that we do the speculative execution only on the appropriate targets.)

Adding a flag to force speculative execution on (or off?) doesn't seem to test what we're actually after, namely that we do SpeculativeExecution iff the target has divergent branches.


http://reviews.llvm.org/D18625