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Optimize storing into uninit locations for arrays and seqs. #24619

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merged 4 commits into from
Jan 19, 2025
Merged

Optimize storing into uninit locations for arrays and seqs. #24619

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f3865da
Optimize arrayWith with the noinit pragma
planetis-m Jan 16, 2025
f8c396e
Optimize storing in uninit locations using =dup and .nodestroy pragma
planetis-m Jan 16, 2025
b2cda7b
try to fix koch boot
planetis-m Jan 16, 2025
1b58498
Merge branch 'devel' into patch-34
planetis-m Jan 18, 2025
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6 changes: 2 additions & 4 deletions lib/system.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -2965,14 +2965,12 @@ when notJSnotNims and not defined(nimSeqsV2):
assert y == "abcgh"
discard

proc arrayWith*[T](y: T, size: static int): array[size, T] {.raises: [].} =
proc arrayWith*[T](y: T, size: static int): array[size, T] {.noinit, raises: [].} =
## Creates a new array filled with `y`.
result = zeroDefault(array[size, T])
for i in 0..size-1:
result[i] = y

proc arrayWithDefault*[T](size: static int): array[size, T] {.raises: [].} =
proc arrayWithDefault*[T](size: static int): array[size, T] {.noinit, raises: [].} =
## Creates a new array filled with `default(T)`.
result = zeroDefault(array[size, T])
for i in 0..size-1:
result[i] = default(T)
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