Biubiubiu12 commented on code in PR #15274:
URL: https://github.com/apache/tvm/pull/15274#discussion_r1271686149
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src/tir/schedule/primitive/blockize_tensorize.cc:
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@@ -441,25 +441,29 @@ Array<BufferRegion> EvalSetRegions(const
Array<BufferRegion>& regions,
* \return The union regions
*/
Array<BufferRegion> UnionRegions(const Array<BufferRegion>& regions) {
+ arith::Analyzer analyzer;
typedef std::vector<Array<arith::IntSet>> ranges_t;
std::unordered_map<Buffer, ranges_t, ObjectPtrHash, ObjectPtrEqual>
intset_map;
+ Array<Buffer> buffer_order;
for (const BufferRegion& buffer_region : regions) {
const Buffer& buffer = buffer_region->buffer;
if (intset_map.find(buffer) == intset_map.end()) {
intset_map[buffer] = {buffer->shape.size(), Array<arith::IntSet>()};
+ buffer_order.push_back(buffer);
}
std::vector<Array<arith::IntSet>> dim_range(buffer->shape.size(),
Array<arith::IntSet>());
for (size_t dim = 0; dim < buffer->shape.size(); ++dim) {
intset_map[buffer][dim].push_back(arith::IntSet::FromRange(buffer_region->region[dim]));
}
}
Array<BufferRegion> results;
- for (const auto& it : intset_map) {
- const Buffer& buffer = it.first;
+ for (size_t i = 0; i < buffer_order.size(); ++i) {
+ auto it = intset_map.find(buffer_order[i]);
Review Comment:
buffer_order is to ensure the order of traversing the `intset_map`
dictionary, and there may be duplicate values in `regions[i]->buffer`
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