reuse RHS allocation for vec.extend(vec.into_iter()) when they do not fit into the LHS - #77496

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the8472 wants to merge 12 commits into

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the8472:extend-recycle

Commits on Oct 3, 2020

reuse RHS allocation in vec.extend() when the LHS is empty
the8472
committed
c5af975

Commits on Oct 4, 2020

vec.extend() reuse RHS allocation if combined data does not fit into LHS
the8472
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2409653
add comment for IntoIter::move_to

the8472
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pickfire
committed
8a0a13a

Commits on Oct 5, 2020

rename function
the8472
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0c443cf
add debug asserts
the8472
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153a916

Commits on Oct 6, 2020

rename function
the8472
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cb477d4
add ascii illustration
the8472
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5e6abf1
move self-replacement to separate line
the8472
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567cd52
memory-based ascii illustration
the8472
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1dbab48

Commits on Oct 7, 2020

annotate used primitives in ascii illustration
the8472
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aa4a4ac

Commits on Oct 9, 2020

reserve() was not annotated with free
the8472
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1885f38

Commits on Oct 15, 2020

fix debug_assert and improve associated comment
the8472
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d460c85