in-place copy for trees

[MilesCranmer]

Should also help bring down GC allocations in combination with #112

[coveralls]

Pull Request Test Coverage Report for Build 12288201527

Details

• 44 of 47 (93.62%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall first build on reduce-allocs at 95.374%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/ParametricExpression.jl	10	13	76.92%

Totals
Change from base Build 12287719693:	95.4%
Covered Lines:	2515
Relevant Lines:	2637

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💛 - Coveralls

[github-actions]

Benchmark Results

	master	2268896...	master/22688966ea334f...
eval/ComplexF32/evaluation	7.22 ± 0.51 ms	7.22 ± 0.56 ms	1
eval/ComplexF64/evaluation	10.6 ± 0.84 ms	10.6 ± 0.78 ms	1
eval/Float32/derivative	11.5 ± 0.99 ms	11.5 ± 0.83 ms	0.995
eval/Float32/derivative_turbo	11.4 ± 0.99 ms	11.5 ± 0.92 ms	0.99
eval/Float32/evaluation	2.71 ± 0.26 ms	2.7 ± 0.25 ms	1
eval/Float32/evaluation_bumper	0.573 ± 0.014 ms	0.57 ± 0.014 ms	1
eval/Float32/evaluation_turbo	0.54 ± 0.033 ms	0.536 ± 0.031 ms	1.01
eval/Float32/evaluation_turbo_bumper	0.573 ± 0.014 ms	0.572 ± 0.013 ms	1
eval/Float64/derivative	15.5 ± 1.1 ms	14.4 ± 0.53 ms	1.07
eval/Float64/derivative_turbo	15.1 ± 0.84 ms	14.4 ± 0.57 ms	1.05
eval/Float64/evaluation	3.17 ± 0.3 ms	3.12 ± 0.32 ms	1.01
eval/Float64/evaluation_bumper	1.18 ± 0.042 ms	1.18 ± 0.045 ms	1
eval/Float64/evaluation_turbo	1.02 ± 0.071 ms	1.01 ± 0.065 ms	1.01
eval/Float64/evaluation_turbo_bumper	1.19 ± 0.042 ms	1.18 ± 0.044 ms	1.01
utils/combine_operators/break_sharing	0.0386 ± 0.00045 ms	0.0391 ± 0.00051 ms	0.986
utils/convert/break_sharing	27.3 ± 2.3 μs	26.4 ± 2.1 μs	1.03
utils/convert/preserve_sharing	0.0979 ± 0.0039 ms	0.0985 ± 0.0042 ms	0.994
utils/copy/break_sharing	27.7 ± 2.3 μs	27.3 ± 2.4 μs	1.02
utils/copy/preserve_sharing	0.0974 ± 0.0035 ms	0.0985 ± 0.004 ms	0.989
utils/count_constant_nodes/break_sharing	8.81 ± 0.21 μs	8.86 ± 0.19 μs	0.994
utils/count_constant_nodes/preserve_sharing	0.085 ± 0.003 ms	0.0867 ± 0.0033 ms	0.98
utils/count_depth/break_sharing	9.6 ± 0.21 μs	9.77 ± 0.25 μs	0.984
utils/count_nodes/break_sharing	8.19 ± 0.19 μs	8.3 ± 0.19 μs	0.986
utils/count_nodes/preserve_sharing	0.0853 ± 0.0036 ms	0.0856 ± 0.0034 ms	0.997
utils/get_set_constants!/break_sharing	0.0327 ± 0.0028 ms	0.0333 ± 0.0021 ms	0.98
utils/get_set_constants!/preserve_sharing	0.173 ± 0.0049 ms	0.177 ± 0.0053 ms	0.981
utils/get_set_constants_parametric	0.0442 ± 0.0025 ms	0.0447 ± 0.0022 ms	0.988
utils/has_constants/break_sharing	4.22 ± 0.12 μs	4.12 ± 0.14 μs	1.02
utils/has_operators/break_sharing	2.03 ± 0.071 μs	2 ± 0.075 μs	1.01
utils/hash/break_sharing	22.5 ± 0.93 μs	23 ± 0.54 μs	0.977
utils/hash/preserve_sharing	0.0967 ± 0.0032 ms	0.0973 ± 0.0036 ms	0.994
utils/index_constant_nodes/break_sharing	25.2 ± 0.95 μs	25.3 ± 1 μs	0.995
utils/index_constant_nodes/preserve_sharing	0.0971 ± 0.0031 ms	0.0994 ± 0.0039 ms	0.977
utils/is_constant/break_sharing	4.95 ± 0.12 μs	4.51 ± 0.12 μs	1.1
utils/simplify_tree/break_sharing	0.173 ± 0.0031 ms	0.171 ± 0.0028 ms	1.01
utils/simplify_tree/preserve_sharing	0.222 ± 0.0048 ms	0.226 ± 0.0069 ms	0.983
utils/string_tree/break_sharing	0.451 ± 0.012 ms	0.454 ± 0.016 ms	0.993
utils/string_tree/preserve_sharing	0.561 ± 0.018 ms	0.568 ± 0.023 ms	0.988
time_to_load	0.229 ± 0.0059 s	0.229 ± 0.0041 s	1