[PATCH] D45271: [LV] Introduce TTI::getMinimumVF
Krzysztof Parzyszek via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 4 13:54:33 PDT 2018
kparzysz added inline comments.
================
Comment at: test/Transforms/LoopVectorize/Hexagon/minimum-vf.ll:5
+; Check that TTI::getMinimumVF works.
+; CHECK: LV: Overriding calculated MaxVF(9) with target's minimum: 64
+
----------------
hsaito wrote:
> Please add a comment saying that hard coded 9 comes from the constant trip count, in case someone has to maintain the test case and/or validation later.
>
I have reduced this testcase. The MaxVF of 9 actually came from register usage calculation. It was a coincidence that the iteration count was 9 as well.
Repository:
rL LLVM
https://reviews.llvm.org/D45271
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