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2015 Jan 22
5
[LLVMdev] LLD: Simplify LayoutPass
In r226336 I shove off 1.2 seconds out of 9.8 seconds for lld to link lld. That's done by parallelizing archive member parsing. But I realized that was not the slowest pass. The single slowest pass in LLD is LayoutPass. Only sort() at the last of Layoutpass::perform takes about 3 seconds (one third of total execution time). It is because the comparison function passed to sort, compareAtoms,