[stdlib] Mark contains methods on Range/ClosedRange transparent
#81458
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These are really popular shorthands for implementing bounds checks, but currently they aren’t even marked `@inline(__always)`, so in larger functions they tend to remain outlined, defeating optimizations that would otherwise happen. The corresponding variants on the partial range types are `@_transparent`; that helps unoptimized performance, so let’s apply the same attribute here. rdar://151177326
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@swift-ci test |
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I'm not expecting any benchmark impact, but. @swift-ci benchmark |
Azoy
approved these changes
May 12, 2025
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Should you also update:
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@swift-ci please benchmark |
Performance (x86_64): -O
Code size: -OPerformance (x86_64): -Osize
Code size: -OsizePerformance (x86_64): -Onone
Code size: -swiftlibs |
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These are really popular shorthands for implementing bounds checks, but currently they aren’t even marked
@inline(__always), so in larger functions they tend to remain outlined, defeating optimizations that would otherwise happen.The corresponding variants on the partial range types are
@_transparent; that helps unoptimized performance, so let’s apply the same attribute here.rdar://151177326