Sanjoy Das c7f69b921f Be wary of abnormal exits from loop when exploiting UB ...

We can safely rely on a NoWrap add recurrence causing UB down the road
only if we know the loop does not have a exit expressed in a way that is
opaque to ScalarEvolution (e.g. by a function call that conditionally
calls exit(0)).

I believe with this change PR28012 is fixed.

Note: I had to change some llvm-lit tests in LoopReroll, since it looks
like they were depending on this incorrect behavior.

llvm-svn: 272237

2016-06-09 01:13:59 +00:00

..

basic32iters.ll

[PATCH] Force LoopReroll to reset the loop trip count value after reroll.

2016-03-22 13:50:57 +00:00

basic.ll

Be wary of abnormal exits from loop when exploiting UB

2016-06-09 01:13:59 +00:00

complex_reroll.ll

Reroll loops with multiple IV and negative step part 3

2016-04-30 00:51:22 +00:00

indvar_with_ext.ll

Enable loopreroll for sext of loop control only IV

2016-05-10 21:16:49 +00:00

negative.ll

…

nonconst_lb.ll

[LPM] Factor all of the loop analysis usage updates into a common helper

2016-02-19 10:45:18 +00:00

ptrindvar.ll

Enable loopreroll to rerool loop with pointer induction variable.

2016-01-25 19:43:45 +00:00

reduction.ll

…

reroll_with_dbg.ll

[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.

2016-04-15 15:57:41 +00:00