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| author | Luke Lau <luke@igalia.com> | 2025-05-29 15:01:28 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-05-29 15:01:28 +0100 |
| commit | 64106581b9d4f68eb4911c402b12b154d77a9eb0 (patch) | |
| tree | 7661578046ddd74353ed7fc4d3594001917f27ed /llvm/lib/IR/Constants.cpp | |
| parent | a5d97ebe8b65f5a94975c013df6dd5fe11e8c652 (diff) | |
| download | llvm-64106581b9d4f68eb4911c402b12b154d77a9eb0.zip llvm-64106581b9d4f68eb4911c402b12b154d77a9eb0.tar.gz llvm-64106581b9d4f68eb4911c402b12b154d77a9eb0.tar.bz2 | |
[Constant] Make Constant::getSplatValue return poison on poison (#141870)
This is a follow up from #141845.
TargetTransformInfo::getOperandInfo needs to be updated to check for
undef values as otherwise a splat is considered a constant, and some
RISC-V cost model tests will start adding a cost to materialize the
constant.
Diffstat (limited to 'llvm/lib/IR/Constants.cpp')
| -rw-r--r-- | llvm/lib/IR/Constants.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/IR/Constants.cpp b/llvm/lib/IR/Constants.cpp index fa45330..a3c725b 100644 --- a/llvm/lib/IR/Constants.cpp +++ b/llvm/lib/IR/Constants.cpp @@ -1711,6 +1711,8 @@ void ConstantVector::destroyConstantImpl() { Constant *Constant::getSplatValue(bool AllowPoison) const { assert(this->getType()->isVectorTy() && "Only valid for vectors!"); + if (isa<PoisonValue>(this)) + return PoisonValue::get(cast<VectorType>(getType())->getElementType()); if (isa<ConstantAggregateZero>(this)) return getNullValue(cast<VectorType>(getType())->getElementType()); if (auto *CI = dyn_cast<ConstantInt>(this)) |