Skip to content

[VPlan] Improve code using m_APInt (NFC) #161683

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 21, 2025
Merged

[VPlan] Improve code using m_APInt (NFC) #161683

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
c003a70
[VPlan] Improve code using m_APInt (NFC)
artagnon Oct 2, 2025
7259446
[VPlan] Swap || branches
artagnon Oct 20, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 3 additions & 6 deletions llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1478,11 +1478,8 @@ static bool optimizeVectorInductionWidthForTCAndVFUF(VPlan &Plan,
if (!Plan.getVectorLoopRegion())
return false;

if (!Plan.getTripCount()->isLiveIn())
return false;
auto *TC = dyn_cast_if_present<ConstantInt>(
Plan.getTripCount()->getUnderlyingValue());
if (!TC || !BestVF.isFixed())
const APInt *TC;
if (!BestVF.isFixed() || !match(Plan.getTripCount(), m_APInt(TC)))
return false;

// Calculate the minimum power-of-2 bit width that can fit the known TC, VF
Expand All @@ -1495,7 +1492,7 @@ static bool optimizeVectorInductionWidthForTCAndVFUF(VPlan &Plan,
return std::max<unsigned>(PowerOf2Ceil(MaxVal.getActiveBits()), 8);
};
unsigned NewBitWidth =
ComputeBitWidth(TC->getValue(), BestVF.getKnownMinValue() * BestUF);
ComputeBitWidth(*TC, BestVF.getKnownMinValue() * BestUF);

LLVMContext &Ctx = Plan.getContext();
auto *NewIVTy = IntegerType::get(Ctx, NewBitWidth);
Expand Down
Loading