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3 Commits

Author SHA1 Message Date
Arnold Schwaighofer c2e9d759f2 LoopVectorizer: Handle strided memory accesses by versioning 
for (i = 0; i < N; ++i)
   A[i * Stride1] += B[i * Stride2];

We take loops like this and check that the symbolic strides 'Strided1/2' are one
and drop to the scalar loop if they are not.

This is currently disabled by default and hidden behind the flag
'enable-mem-access-versioning'.

radar://13075509

llvm-svn: 198950
 2014-01-10 18:20:32 +00:00
Matt Arsenault e64c7c7530 Fix missing CHECK-LABELs 
llvm-svn: 191853
 2013-10-02 20:29:00 +00:00
Nadav Rotem f43cbeee15 LoopVectorizer: No need to generate pointer disambiguation checks between readonly pointers. 
llvm-svn: 180570
 2013-04-25 19:55:03 +00:00