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@Kivooeo Kivooeo commented Oct 14, 2025

cc #146277 (comment)

r? scottmcm

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Oct 14, 2025
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Thanks! It's essentially the same in LLVM, but it'll go through the intrinsic now so other backends can hopefully do the right thing if they need something else.

r=me when CI is green

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(carry as $bigty);
((v >> <$ty>::BITS) as $ty, v as $ty)
let (lo, hi) = self.carrying_mul_add(other, other2, carry);
(hi, lo)
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Oh, interesting that this method had picked the opposite order. I guess we were all taught math in big-endian, even if it's kinda worse 🙃

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Yeah, it was not obvious at first, so it took some time to understand why tests are not passing

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Kivooeo commented Oct 14, 2025

r=me when CI is green

Oh, I can't do it 😅 so I'm worry you will need to r+ it yourself or delegate rights for this one

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@bors r=scottmcm

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bors commented Oct 14, 2025

📌 Commit 714843d has been approved by scottmcm

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 14, 2025
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Oct 14, 2025
…cottmcm

Replace manual implementation with `carrying_mul_add`

cc rust-lang#146277 (comment)

r? scottmcm
bors added a commit that referenced this pull request Oct 14, 2025
Rollup of 7 pull requests

Successful merges:

 - #146187 (Unstably constify `ptr::drop_in_place` and related methods)
 - #146503 (std: improve handling of timed condition variable waits on macOS)
 - #147421 (Add check if span is from macro expansion)
 - #147630 (Bitset cleanups)
 - #147666 (Replace manual implementation with `carrying_mul_add`)
 - #147669 (fix missing link to `std::char` in `std` docs)
 - #147673 (pretty print u128 with display)

r? `@ghost`
`@rustbot` modify labels: rollup
jdonszelmann added a commit to jdonszelmann/rust that referenced this pull request Oct 14, 2025
…cottmcm

Replace manual implementation with `carrying_mul_add`

cc rust-lang#146277 (comment)

r? scottmcm
bors added a commit that referenced this pull request Oct 14, 2025
Rollup of 7 pull requests

Successful merges:

 - #146187 (Unstably constify `ptr::drop_in_place` and related methods)
 - #146503 (std: improve handling of timed condition variable waits on macOS)
 - #147421 (Add check if span is from macro expansion)
 - #147630 (Bitset cleanups)
 - #147666 (Replace manual implementation with `carrying_mul_add`)
 - #147669 (fix missing link to `std::char` in `std` docs)
 - #147673 (pretty print u128 with display)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Oct 14, 2025
…cottmcm

Replace manual implementation with `carrying_mul_add`

cc rust-lang#146277 (comment)

r? scottmcm
bors added a commit that referenced this pull request Oct 14, 2025
Rollup of 12 pull requests

Successful merges:

 - #146187 (Unstably constify `ptr::drop_in_place` and related methods)
 - #146503 (std: improve handling of timed condition variable waits on macOS)
 - #147526 (Move computation of allocator shim contents to cg_ssa)
 - #147630 (Bitset cleanups)
 - #147638 (bpf: return results larger than one register indirectly)
 - #147666 (Replace manual implementation with `carrying_mul_add`)
 - #147669 (fix missing link to `std::char` in `std` docs)
 - #147673 (pretty print u128 with display)
 - #147677 (Fewer exceptions in `span()` on parsed attributes)
 - #147680 (Fix ICE caused by associated_item_def_ids on wrong type in resolve diag)
 - #147682 (convert `rustc_main` to the new attribute parsing infrastructure)
 - #147683 (only check duplicates on old/unparsed attributes)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 49be94c into rust-lang:master Oct 15, 2025
10 checks passed
@rustbot rustbot added this to the 1.92.0 milestone Oct 15, 2025
rust-timer added a commit that referenced this pull request Oct 15, 2025
Rollup merge of #147666 - Kivooeo:full_mud_add-followup, r=scottmcm

Replace manual implementation with `carrying_mul_add`

cc #146277 (comment)

r? scottmcm
github-actions bot pushed a commit to rust-lang/miri that referenced this pull request Oct 15, 2025
Rollup of 12 pull requests

Successful merges:

 - rust-lang/rust#146187 (Unstably constify `ptr::drop_in_place` and related methods)
 - rust-lang/rust#146503 (std: improve handling of timed condition variable waits on macOS)
 - rust-lang/rust#147526 (Move computation of allocator shim contents to cg_ssa)
 - rust-lang/rust#147630 (Bitset cleanups)
 - rust-lang/rust#147638 (bpf: return results larger than one register indirectly)
 - rust-lang/rust#147666 (Replace manual implementation with `carrying_mul_add`)
 - rust-lang/rust#147669 (fix missing link to `std::char` in `std` docs)
 - rust-lang/rust#147673 (pretty print u128 with display)
 - rust-lang/rust#147677 (Fewer exceptions in `span()` on parsed attributes)
 - rust-lang/rust#147680 (Fix ICE caused by associated_item_def_ids on wrong type in resolve diag)
 - rust-lang/rust#147682 (convert `rustc_main` to the new attribute parsing infrastructure)
 - rust-lang/rust#147683 (only check duplicates on old/unparsed attributes)

r? `@ghost`
`@rustbot` modify labels: rollup
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5 participants