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...think it would be easy to add the LLVM dominator tree once I can compile it (the compilation problem is due to gcc 3.3.3). My next step will be: 1) debug the three benchmarks that are failing: gcc, vpr and vortex 2) add instruction folding Just as an aside, I compared the puzzle solver with the BigBlockAllocator, and the puzzle solver seems to be producing much fewer memory accesses for big basic blocks. For instance, for a basic block with about 8000 instructions, the algorithms produce the following static code: #mem accesses #Moves puzzle 178 68 bi...