... and you can have all you want.
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Well, for what it’s worth, I expect you would have heard of it too. I’m making debug builds so perhaps *that* codepath is the problem. I should find out. Usually people just say “suck it up” rather than press for more science. I’m always game for more science!
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At the risk of a dumb question, do you have enough RAM (>16GB)? In addition to compilation time, the rustc RAM usage can be substantial. When we see contributors hitting multi-hour compile times on an otherwise fine machine, it's almost always that they are hitting swap.
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IMO the way we talk about Rust compile times is suboptimal: given that most of the time is spent in LLVM, we only add 10%-50% (you should probably submit a bug if it's 50% or more) on top of that. So when building from scratch, C++ *maybe* gets wins from parallelism.
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this continues to read as ridiculous to me. we know llvm takes an incredibly long amount of time, and part of that is because rust emits a huge pile of garbage for it sort out. and somehow the rust front end *still* takes as long as llvm? that's so incredibly bad...
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