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[mlir] Optimize const values AffineMap::compose #141005

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Merged
merged 2 commits into from
May 24, 2025
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[mlir] Optimize const values AffineMap::compose #141005

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[mlir] Optimize const values AffineMap::compose
qazwsxedcrfvtg14 May 22, 2025
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Merge branch 'main' into main
qazwsxedcrfvtg14 May 24, 2025
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12 changes: 5 additions & 7 deletions mlir/lib/IR/AffineMap.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -580,15 +580,13 @@ AffineMap AffineMap::compose(AffineMap map) const {
SmallVector<int64_t, 4> AffineMap::compose(ArrayRef<int64_t> values) const {
assert(getNumSymbols() == 0 && "Expected symbol-less map");
SmallVector<AffineExpr, 4> exprs;
exprs.reserve(values.size());
MLIRContext *ctx = getContext();
for (auto v : values)
exprs.push_back(getAffineConstantExpr(v, ctx));
auto resMap = compose(AffineMap::get(0, 0, exprs, ctx));
for (int64_t value : values)
exprs.push_back(getAffineConstantExpr(value, ctx));
SmallVector<int64_t, 4> res;
res.reserve(resMap.getNumResults());
for (auto e : resMap.getResults())
res.push_back(cast<AffineConstantExpr>(e).getValue());
res.reserve(getNumResults());
for (auto e : getResults())
res.push_back(cast<AffineConstantExpr>(e.replaceDims(exprs)).getValue());
return res;
}

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