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faster pim host constant folding
Validate Operations / validate-operations (push) Successful in 17m33s
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NiccoloN
2026-04-14 19:58:26 +02:00
parent 95ae93e07d
commit ae93d1c563
4 changed files with 94 additions and 41 deletions
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src/PIM/Pass/PimCodegen/HostConstantFolding/Patterns/Subview.cpp
+4 -21
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@@ -249,32 +249,15 @@ struct FoldConstantCoreSubviewPattern final : OpRewritePattern<memref::SubViewOp
if (failed(staticOffsets))
return failure();
auto sourceType = dyn_cast<RankedTensorType>(denseAttr->getType());
if (!sourceType || !sourceType.hasStaticShape())
return failure();
auto elementType = cast<MemRefType>(subviewOp.getType()).getElementType();
auto resultMemRefType =
MemRefType::get(SmallVector<int64_t>(subviewInfo->sizes.begin(), subviewInfo->sizes.end()), elementType);
auto resultTensorType = RankedTensorType::get(resultMemRefType.getShape(), elementType);
const int64_t numResultElements = resultTensorType.getNumElements();
auto sourceStrides = computeRowMajorStrides(sourceType.getShape());
auto resultStrides = computeRowMajorStrides(resultTensorType.getShape());
SmallVector<Attribute> sourceValues(denseAttr->getValues<Attribute>());
SmallVector<Attribute> resultValues(numResultElements);
for (int64_t i = 0; i < numResultElements; ++i) {
auto resultIndices = delinearizeIndex(i, resultTensorType.getShape(), resultStrides);
SmallVector<int64_t> sourceIndices;
sourceIndices.reserve(resultIndices.size());
for (auto [off, idx] : llvm::zip_equal(*staticOffsets, resultIndices))
sourceIndices.push_back(off + idx);
resultValues[i] = sourceValues[linearizeIndex(sourceIndices, sourceStrides)];
}
auto foldedAttr = DenseElementsAttr::get(resultTensorType, resultValues);
auto foldedAttr = foldDenseSubview(*denseAttr, *staticOffsets, resultMemRefType.getShape());
if (failed(foldedAttr))
return failure();
auto newGlobal =
createFoldedGlobal(moduleOp, subviewOp.getLoc(), resultMemRefType, foldedAttr, "pim_folded_subview");
createFoldedGlobal(moduleOp, subviewOp.getLoc(), resultMemRefType, *foldedAttr, "pim_folded_subview");
markWeightAlways(newGlobal);
rewriter.setInsertionPoint(subviewOp);