================
@@ -5191,47 +5192,95 @@ bool SROA::presplitLoadsAndStores(AllocaInst &AI,
AllocaSlices &AS) {
/// promoted.
AllocaInst *SROA::rewritePartition(AllocaInst &AI, AllocaSlices &AS,
Partition &P) {
+ const DataLayout &DL = AI.getDataLayout();
// Try to compute a friendly type for this partition of the alloca. This
// won't always succeed, in which case we fall back to a legal integer type
// or an i8 array of an appropriate size.
- Type *SliceTy = nullptr;
- const DataLayout &DL = AI.getDataLayout();
- unsigned VScale = AI.getFunction()->getVScaleValue();
-
- std::pair<Type *, IntegerType *> CommonUseTy =
- findCommonType(P.begin(), P.end(), P.endOffset());
- // Do all uses operate on the same type?
- if (CommonUseTy.first) {
- TypeSize CommonUseSize = DL.getTypeAllocSize(CommonUseTy.first);
- if (CommonUseSize.isFixed() && CommonUseSize.getFixedValue() >= P.size())
- SliceTy = CommonUseTy.first;
- }
- // If not, can we find an appropriate subtype in the original allocated type?
- if (!SliceTy)
+ //
+ // Returns a tuple with the following elements:
+ // - PartitionType: The computed type for this partition.
+ // - IsIntegerWideningViable: True if integer widening promotion is used.
+ // - VectorType: The vector type if vector promotion is used, otherwise
+ // nullptr.
+ auto SelectPartitionTy = [&]() -> std::tuple<Type *, bool, VectorType *> {
+ // First check if the partition is viable for vetor promotion.
----------------
nikic wrote:
```suggestion
// First check if the partition is viable for vector promotion.
```
https://github.com/llvm/llvm-project/pull/167771
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