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2016 Apr 23
2
[IndVarSimplify] Narrow IV's are not eliminated resulting in inefficient code
Hi Sanjoy,
Thank you for looking into this!
Yes, your patch does fix my larger test case too. My algorithm gets double
performance improvement with the patch, as the loop now has a smaller
instruction set and succeeds to unroll w/o any extra #pragma's.
I also ran the LLVM tests against the patch. There are 6 new failures:
Analysis/LoopAccessAnalysis/number-of-memchecks.ll