[llvm] [VPlan] Only use selectVectorizationFactor for cross-check (NFCI). (PR #103033)
via llvm-commits
llvm-commits at lists.llvm.org
Sun Aug 18 03:48:56 PDT 2024
================
@@ -7217,18 +7198,21 @@ InstructionCost LoopVectorizationPlanner::cost(VPlan &Plan,
return Cost;
}
-ElementCount LoopVectorizationPlanner::getBestVF() {
+VectorizationFactor LoopVectorizationPlanner::getBestVF() {
+ if (VPlans.empty())
+ return VectorizationFactor::Disabled();
// If there is a single VPlan with a single VF, return it directly.
VPlan &FirstPlan = *VPlans[0];
if (VPlans.size() == 1 && size(FirstPlan.vectorFactors()) == 1)
- return *FirstPlan.vectorFactors().begin();
+ return {*FirstPlan.vectorFactors().begin(), 0, 0};
----------------
ayalz wrote:
(Returning zeroes retains current behavior: the single VPlan case corresponds to a UserVF whose cost and scalar-cost are ignored, although the former does have valid cost (the latter is not calculated).)
https://github.com/llvm/llvm-project/pull/103033
More information about the llvm-commits
mailing list