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3 Commits

Author SHA1 Message Date
Craig Topper a31112e357 [X86] Replace -mcpu with -mattr on some tests. 
llvm-svn: 371260
 2019-09-06 21:48:44 +00:00
Craig Topper 005b22855e [LoopVectorize][X86] Clamp interleave factor if we have a known constant trip count that is less than VF*interleave 
If we know the trip count, we should make sure the interleave factor won't cause the vectorized loop to exceed it.

Improves one of the cases from PR42674

Differential Revision: https://reviews.llvm.org/D65896

llvm-svn: 368215
 2019-08-07 21:44:14 +00:00
Craig Topper 0a05a04e5b [LoopVectorize][X86] Add test case for missed vectorization from PR42674. 
We do end vectorizing the code, but use an interleave factor that
is too high and causes the vector code to be dead.

llvm-svn: 368197
 2019-08-07 19:07:10 +00:00