Tag
ssa-form
- Jun 8, 2026 Chordal Interference Graphs and Optimal Coloring in SSA Form Why the interference graph of an SSA program has no induced cycles longer than three, how a perfect elimination ordering yields a minimum coloring in linear time, and what destroying SSA costs. compilers
- Mar 21, 2026 Building the Interference Graph from SSA Live Ranges Why SSA live ranges interfere only at phi-connected join points, how that makes the graph chordal, and what the colouring and spilling decisions cost once the graph is built. compilers
- Feb 27, 2026 Memory SSA: Giving Loads and Stores Def-Use Chains How aliasing prevents ordinary SSA from naming memory locations, what the memory-phi construction buys for store-to-load forwarding, and why the result must be abandoned rather than verified. compilers
- Apr 1, 2025 Phi Functions: Parallel Semantics and the Out-of-SSA Problem Why phi inputs are read simultaneously rather than in sequence, how that forces the lost-copy and swap problems on elimination, and how edge splitting and register coalescing resolve them. compilers
- Dec 12, 2024 Minimal SSA Construction from Dominance Frontiers How the Cytron placement algorithm decides where phi functions belong using dominance frontiers, and why placing them minimally changes what later passes can assume. compilers
- Jul 4, 2022 Sparse Conditional Constant Propagation Across the SSA Graph How SCCP combines constant propagation with reachability so that unreachable branches stop contributing values, and why the sparse formulation converges faster than a dense lattice iteration. compilers