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Read each basic block's reverse-postorder index from contents.index in DomTree instead of allocating and populating an unordered_map<BasicBlock*, Index>, and skip self-loop backedges immediately with predIndex >= index. Update OnceReduction and test/example/domtree.cpp to initialize contents.index, and remove the redundant index initialization loop in WeakTopologicalOrdering. Benchmark results across 16 WebAssembly modules (3 iterations, interleaved): - --constraint-analysis: - Geomean: 1.646s -> 1.576s (-4.3%) - Total time: 64.83s -> 62.82s (-3.1%) - --rse: - Geomean: 0.922s -> 0.859s (-6.8%) - Total time: 27.09s -> 25.40s (-6.3%)
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Read each basic block's reverse-postorder index from contents.index in
DomTree instead of allocating and populating an
unordered_map<BasicBlock*, Index>, and skip self-loop backedges
immediately with predIndex >= index. Update OnceReduction and
test/example/domtree.cpp to initialize contents.index, and remove the
redundant index initialization loop in WeakTopologicalOrdering.
Benchmark results across 16 WebAssembly modules (3 iterations,
interleaved):