4 Commits

Author	SHA1	Message	Date
Tyler Nowicki	9fe497fcac	Improve the remark generated when a variable that is used outside the loop is not a reduction or induction variable. ... Reviewed by Arnold Schwaighofer llvm-svn: 214440	2014-07-31 21:02:40 +00:00
Matt Arsenault	e64c7c7530	Fix missing CHECK-LABELs ... llvm-svn: 191853	2013-10-02 20:29:00 +00:00
Arnold Schwaighofer	53e622cef4	Don't vectorize if there are outside loop users of the induction variable. ... We would have to compute the pre increment value, either by computing it on every loop iteration or by splitting the edge out of the loop and inserting a computation for it there. For now, just give up vectorizing such loops. Fixes PR17179. llvm-svn: 190790	2013-09-16 16:17:24 +00:00
Arnold Schwaighofer	70a9be5297	LoopVectorize: PHIs with only outside users should prevent vectorization ... We check that instructions in the loop don't have outside users (except if they are reduction values). Unfortunately, we skipped this check for if-convertable PHIs. Fixes PR16184. llvm-svn: 183035	2013-05-31 19:53:50 +00:00