Rollup of 2 pull requests#157340
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this removes the panic path when dividing by the frequency. this also makes calls to Instant::now() faster.
…ChrisDenton windows: Elide division-by-zero checks in Instant::now() This PR teaches LLVM that the frequency of the performance counter is non null so it is able to remove division by zero checks. This removes the panic path in `mul_div_u64` and should make calls to `Instant::now()` (very slightly) faster. As seen in the assembly (see godbolt below), telling LLVM that the frequency is non zero suffices to get the optimization, but I don't know if it could be a great idea to also update the signature of `mul_div_u64`? MSDN page for [QueryPerformanceFrequency](https://learn.microsoft.com/en-us/windows/win32/api/profileapi/nf-profileapi-queryperformancefrequency): > On systems that run Windows XP or later, the function will always succeed when given valid parameters and will thus never return zero. Godbolt: https://rust.godbolt.org/z/xr6x8MrPE
…lt, r=JonathanBrouwer Enable `clippy::mem_replace_with_default` Enables `clippy::mem_replace_with_default` and fixes the errors that occur as a result. Closes rust-lang#157245.
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@bors r+ rollup=never p=5 |
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💔 Test for 49642bb failed: CI. Failed job:
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@bors retry |
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💔 Test for 18ccdea failed: CI. Failed job:
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@bors treeclosed=5 failing to get docker images |
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Tree closed for PRs with priority less than 5. |
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@bors p=4 retry |
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A job failed! Check out the build log: (web) (plain enhanced) (plain) Click to see the possible cause of the failure (guessed by this bot) |
This was referenced Jun 3, 2026
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Successful merges:
clippy::mem_replace_with_default#157336 (Enableclippy::mem_replace_with_default)r? @ghost
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