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Daniel Martí 21bd89ff73 slight simplifications and alloc reductions ... Reuse a buffer and a map across loop iterations, because we can. Make recordTypeDone only track named types, as that is enough to detect type cycles. Without named types, there can be no cycles. These two reduce allocs by a fraction of a percent: name old time/op new time/op delta Build-16 10.4s ± 2% 10.4s ± 1% ~ (p=0.739 n=10+10) name old bin-B new bin-B delta Build-16 5.51M ± 0% 5.51M ± 0% ~ (all equal) name old cached-time/op new cached-time/op delta Build-16 391ms ± 9% 407ms ± 7% ~ (p=0.095 n=10+9) name old mallocs/op new mallocs/op delta Build-16 34.5M ± 0% 34.4M ± 0% -0.12% (p=0.000 n=10+10) name old sys-time/op new sys-time/op delta Build-16 5.87s ± 5% 5.82s ± 5% ~ (p=0.182 n=10+9) It doesn't seem like much, but remember that these stats are for the entire set of processes, where garble only accounts for about 10% of the total wall time when compared to the compiler or linker. So a ~0.1% decrease globally is still significant. linkerVariableStrings is also indexed by *types.Var rather than types.Object, since -ldflags=-X only supports setting the string value of variables. This shouldn't make a significant difference in terms of allocs, but at least the map is less prone to confusion with other object types. To ensure the new code doesn't trip up on non-variables, we add test cases. Finally, for the sake of clarity, index into the types.Info maps like Defs and Uses rather than calling ObjectOf if we know whether the identifier we have is a definition of a name or the use of a defined name. This isn't better in terms of performance, as ObjectOf is a tiny method, but just like with linkerVariableStrings before, the new code is clearer.		2 years ago
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asthelper	CI: bump gotip to February	2 years ago
literals	slight simplifications and alloc reductions	2 years ago