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+title = "Before or after scheduling"
+author = "Yann Herklotz"
+tags = []
+categories = []
+backlinks = ["1c5c"]
+forwardlinks = ["1c5e"]
+zettelid = "1c5d"
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+
+Register allocation is a tricky optimisation to get right, because there
+are a lot of trade-offs on where to place the optimisation. Especially
+in high-level synthesis, it's tricky to know where to place these, as
+one can target really any architecture.
+
+In high-level synthesis particularly, it seems like it would be better
+to perform the optimisation after scheduling, as one would want as much
+freedom for scheduling as possible. This is to get the largest possible
+instruction level parallelism.