search for: ac827034

Hi, The TinyTripCountVectorThreshold only applies to loops with a known (constant) trip count. If a loop has a trip count below this value we don’t attempt to vectorize the loop. The loop below has an unknown trip count. Once we decide to vectorize a loop, we emit code to check whether we can execute one iteration of the vectorized body. This is the code quoted below. On May 22, 2013, at 10:23

Hi, I have the llvm loop vectorizer to complie the following sample: //================= int test(int *a, int n) { for(int i = 0; i < n; i++) { a[i] += i; } return 0; } //================ The corresponded .ll file has a loop preheader: //================ for.body.lr.ph: ; preds = %entry

...vision expert: david.tweed at gmail.com "while having code so boring anyone can maintain it, use Python." -- attempted insult seen on slashdot -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130523/ac827034/attachment.html>