x86_64-win: Enable f128 on LLVM 23+ by tgross35 · Pull Request #158918 · rust-lang/rust

tgross35 · 2026-07-07T17:08:12Z

LLVM23 includes the ABI fix to make f128 work 1. That version isn't
yet stable, but at least the type will start getting picked up in
top-of-tree CI.

While addressing this, also update the comment regarding f16.

tgross35 · 2026-07-07T17:09:08Z

@bors try jobs=x86_64-msvc*,x86_64-mingw*

x86_64-win: Return f128 on the stack, matching LLVM try-job: x86_64-msvc* try-job: x86_64-mingw*

rust-bors · 2026-07-07T20:14:55Z

💔 Test for a7adc0d failed: CI. Failed jobs:

try - x86_64-msvc-1 (web logs, enhanced plaintext logs)
try - x86_64-msvc-2 (web logs, enhanced plaintext logs)

LLVM23 includes the ABI fix to make f128 work [1]. That version isn't yet stable, but at least the type will start getting picked up in top-of-tree CI. While addressing this, also update the comment regarding f16. [1]: llvm/llvm-project@aa47e59

tgross35 · 2026-08-13T00:53:32Z

First commit was pulled in via the LLVM PR, 2c089a6

tgross35 · 2026-08-13T00:55:48Z

@bors try jobs=x86_64-msvc*,x86_64-mingw*

x86_64-win: Enable f128 on LLVM 23+ try-job: x86_64-msvc* try-job: x86_64-mingw*

tgross35 · 2026-08-13T02:14:46Z

r? @folkertdev

rustbot · 2026-08-13T02:14:52Z

r? @mejrs

rustbot has assigned @mejrs.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

Why was this reviewer chosen?

The reviewer was selected based on:

Owners of files modified in this PR: compiler
compiler expanded to 75 candidates
Random selection from 15 candidates

tgross35 · 2026-08-13T02:15:03Z

r? @folkertdev

rustbot · 2026-08-13T02:15:05Z

Requested reviewer is already assigned to this pull request.

Please choose another assignee.

rust-log-analyzer · 2026-08-13T04:14:45Z

The job x86_64-msvc-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

rust-bors · 2026-08-13T04:14:59Z

💔 Test for f3cff50 failed: CI. Failed jobs:

try - x86_64-mingw-2 (web logs, enhanced plaintext logs)
try - x86_64-msvc-1 (web logs, enhanced plaintext logs)

tgross35 · 2026-08-13T04:26:06Z

The hosted runner lost communication with the server. Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.

@bors try jobs=x86_64-mingw-2,x86_64-msvc-1

x86_64-win: Enable f128 on LLVM 23+ try-job: x86_64-mingw-2 try-job: x86_64-msvc-1

rust-bors · 2026-08-13T07:18:04Z

☀️ Try build successful (CI)
Build commit: 1756fa4 (1756fa4a0d4d08288d62c4ef278682aedd54dbd9)
Base parent: 52d0866 (52d08664805c8deb47b7e86999d7f8647b424a15)

folkertdev · 2026-08-13T09:34:01Z

@bors r+

rust-bors · 2026-08-13T09:34:03Z

📌 Commit fd86d6d has been approved by folkertdev

It is now in the queue for this repository.

…kertdev x86_64-win: Enable f128 on LLVM 23+ LLVM23 includes the ABI fix to make f128 work [1]. That version isn't yet stable, but at least the type will start getting picked up in top-of-tree CI. While addressing this, also update the comment regarding f16. [1]: llvm/llvm-project@aa47e59

Rollup of 14 pull requests Successful merges: - #158918 (x86_64-win: Enable f128 on LLVM 23+) - #160288 (rustdoc: use anonymous constant for primitives/keywords/attribute docs) - #160440 (Couple of misc improvements to the unwind infrastructure) - #160441 (PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian) - #160896 (tidy: Update Python version requirements to 3.11) - #160972 (std: map ERROR_NEGATIVE_SEEK to ErrorKind::InvalidInput on Windows) - #161040 (Optimize CStr backing slice bounds checks) - #158885 (Add `core::num::Complex`) - #160928 (check `mut`-restriction when tuple constructor is used as a value) - #161002 (disallow `#[cold]` on `extern "custom"` functions) - #161016 (Fix invalid suggestion from try unlabled block) - #161020 (io: Use `NonNull` for all `Custom` API related to `Box`, update documentation for `Custom`) - #161044 (rustc-dev-guide subtree update) - #161046 (Enable unrolling feature of bors)

…kertdev x86_64-win: Enable f128 on LLVM 23+ LLVM23 includes the ABI fix to make f128 work [1]. That version isn't yet stable, but at least the type will start getting picked up in top-of-tree CI. While addressing this, also update the comment regarding f16. [1]: llvm/llvm-project@aa47e59

…uwer Rollup of 17 pull requests Successful merges: - #161045 (stdarch subtree update) - #157428 (allocator: refactor for stabilisation) - #158918 (x86_64-win: Enable f128 on LLVM 23+) - #160288 (rustdoc: use anonymous constant for primitives/keywords/attribute docs) - #160440 (Couple of misc improvements to the unwind infrastructure) - #160441 (PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian) - #160896 (tidy: Update Python version requirements to 3.11) - #160972 (std: map ERROR_NEGATIVE_SEEK to ErrorKind::InvalidInput on Windows) - #161040 (Optimize CStr backing slice bounds checks) - #160928 (check `mut`-restriction when tuple constructor is used as a value) - #160969 (give layout errors from `size_of_val` and `align_of_val` a span) - #161002 (disallow `#[cold]` on `extern "custom"` functions) - #161016 (Fix invalid suggestion from try unlabled block) - #161020 (io: Use `NonNull` for all `Custom` API related to `Box`, update documentation for `Custom`) - #161044 (rustc-dev-guide subtree update) - #161046 (Enable unrolling feature of bors) - #161054 (rustdoc: Fix link title attribute value when field of enum variants)

Rollup of 23 pull requests Successful merges: - #157428 (allocator: refactor for stabilisation) - #158918 (x86_64-win: Enable f128 on LLVM 23+) - #160077 (Don't compute FnAbi for LLVM intrinsics) - #160288 (rustdoc: use anonymous constant for primitives/keywords/attribute docs) - #160440 (Couple of misc improvements to the unwind infrastructure) - #160896 (tidy: Update Python version requirements to 3.11) - #160972 (std: map ERROR_NEGATIVE_SEEK to ErrorKind::InvalidInput on Windows) - #160984 (Fix ICE on { _ } const args in bodies by tracking const-only infer args) - #161036 (Use `with_types_for_suggestion!` in `write_struct_like()`) - #161037 (std: don't clean up the main thread's altstack) - #161040 (Optimize CStr backing slice bounds checks) - #161065 (core: Fix a typo in funnel shift documentation) - #158885 (Add `core::num::Complex`) - #160928 (check `mut`-restriction when tuple constructor is used as a value) - #160969 (give layout errors from `size_of_val` and `align_of_val` a span) - #161002 (disallow `#[cold]` on `extern "custom"` functions) - #161016 (Fix invalid suggestion from try unlabled block) - #161020 (io: Use `NonNull` for all `Custom` API related to `Box`, update documentation for `Custom`) - #161044 (rustc-dev-guide subtree update) - #161046 (Enable unrolling feature of bors) - #161054 (rustdoc: Fix link title attribute value when field of enum variants) - #161055 (`offload!` function-like macro) - #161064 (Revert "riscv: promote d, e, and f target_features to CfgStableToggleUnstable")

Rollup merge of #158918 - tgross35:win64-f128-updates, r=folkertdev x86_64-win: Enable f128 on LLVM 23+ LLVM23 includes the ABI fix to make f128 work [1]. That version isn't yet stable, but at least the type will start getting picked up in top-of-tree CI. While addressing this, also update the comment regarding f16. [1]: llvm/llvm-project@aa47e59

This comment has been minimized.

Sign in to view

rust-bors Bot pushed a commit that referenced this pull request Jul 7, 2026

Auto merge of #158918 - tgross35:win64-f128-updates, r=<try>

a7adc0d

x86_64-win: Return f128 on the stack, matching LLVM try-job: x86_64-msvc* try-job: x86_64-mingw*

This comment has been minimized.

Sign in to view

x86_64-win: Enable f128 on LLVM 23+

fd86d6d

LLVM23 includes the ABI fix to make f128 work [1]. That version isn't yet stable, but at least the type will start getting picked up in top-of-tree CI. While addressing this, also update the comment regarding f16. [1]: llvm/llvm-project@aa47e59

tgross35 force-pushed the win64-f128-updates branch from 23a594c to fd86d6d Compare August 13, 2026 00:48

tgross35 changed the title ~~x86_64-win: Return f128 on the stack, matching LLVM~~ x86_64-win: Enable f128 on LLVM 23+ Aug 13, 2026

This comment has been minimized.

Sign in to view

rust-bors Bot pushed a commit that referenced this pull request Aug 13, 2026

Auto merge of #158918 - tgross35:win64-f128-updates, r=<try>

f3cff50

x86_64-win: Enable f128 on LLVM 23+ try-job: x86_64-msvc* try-job: x86_64-mingw*

tgross35 marked this pull request as ready for review August 13, 2026 02:14

rustbot assigned folkertdev Aug 13, 2026

rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Aug 13, 2026

rustbot assigned mejrs Aug 13, 2026

rustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Aug 13, 2026

tgross35 unassigned mejrs Aug 13, 2026

rust-bors Bot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Aug 13, 2026

This comment has been minimized.

Sign in to view

rust-bors Bot pushed a commit that referenced this pull request Aug 13, 2026

Auto merge of #158918 - tgross35:win64-f128-updates, r=<try>

1756fa4

x86_64-win: Enable f128 on LLVM 23+ try-job: x86_64-mingw-2 try-job: x86_64-msvc-1

tgross35 requested a review from folkertdev August 13, 2026 07:19

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Aug 13, 2026

rust-bors Bot 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 Aug 13, 2026

JonathanBrouwer mentioned this pull request Aug 13, 2026

Rollup of 6 pull requests #161041

Closed

jhpratt mentioned this pull request Aug 13, 2026

Rollup of 14 pull requests #161056

Closed

JonathanBrouwer mentioned this pull request Aug 13, 2026

Rollup of 17 pull requests #161066

Closed

jhpratt mentioned this pull request Aug 13, 2026

Rollup of 23 pull requests #161075

Merged

rust-bors Bot merged commit ce7c52a into rust-lang:main Aug 14, 2026
14 checks passed

rustbot added this to the 1.99.0 milestone Aug 14, 2026

Uh oh!

Uh oh!

Conversation

tgross35 commented Jul 7, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

tgross35 commented Jul 7, 2026

Uh oh!

This comment has been minimized.

This comment has been minimized.

rust-bors Bot commented Jul 7, 2026

Uh oh!

This comment has been minimized.

tgross35 commented Aug 13, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

tgross35 commented Aug 13, 2026

Uh oh!

This comment has been minimized.

tgross35 commented Aug 13, 2026

Uh oh!

rustbot commented Aug 13, 2026

Uh oh!

tgross35 commented Aug 13, 2026

Uh oh!

rustbot commented Aug 13, 2026

Uh oh!

rust-log-analyzer commented Aug 13, 2026

Uh oh!

rust-bors Bot commented Aug 13, 2026

Uh oh!

tgross35 commented Aug 13, 2026

Uh oh!

This comment has been minimized.

rust-bors Bot commented Aug 13, 2026

Uh oh!

folkertdev commented Aug 13, 2026

Uh oh!

rust-bors Bot commented Aug 13, 2026

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

5 participants

tgross35 commented Jul 7, 2026 •

edited

Loading

tgross35 commented Aug 13, 2026 •

edited

Loading