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3 Commits

Author SHA1 Message Date
Matt Arsenault
55cfb52aa3 Fix missing CHECK-LABELs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191853 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-10-02 20:29:00 +00:00
Arnold Schwaighofer
5721d2f674 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190790 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-09-16 16:17:24 +00:00
Arnold Schwaighofer
47afc19625 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183035 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-05-31 19:53:50 +00:00