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use indirect return for i128 and f128 on wasm32 #135534

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merged 1 commit into from
Jan 17, 2025
Merged

use indirect return for i128 and f128 on wasm32 #135534

merged 1 commit into from
Jan 17, 2025

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folkertdev
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fixes #135532

Based on https://github.com/WebAssembly/tool-conventions/blob/main/BasicCABI.md we now use an indirect return for i128, u128 and f128. That is what LLVM ended up doing anyway.

r? @bjorn3

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jan 15, 2025
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bjorn3 commented Jan 15, 2025

Given that I was the one who actually suggested this:

r? compiler

@rustbot rustbot assigned lcnr and unassigned bjorn3 Jan 15, 2025
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lcnr commented Jan 15, 2025

r? compiler

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tgross35
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Could this get a codegen test? I recently wrote a similar one that you could probably copy part of https://github.com/rust-lang/rust/blob/3557d39ce2c8ae3b2fb57e9d900ce47796f0a13e/tests/codegen/i128-x86-callconv.rs

compiler/rustc_target/src/callconv/wasm.rs Show resolved Hide resolved
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I added codegen tests for i128 and f128 based on your code. The tests for naked-asm-wasm (soon) will provide further coverage.

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r=me with green CI

@tgross35 tgross35 assigned tgross35 and unassigned cjgillot Jan 15, 2025
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folkertdev commented Jan 15, 2025 •
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@bors r=tgross35

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bors commented Jan 15, 2025

@folkertdev: 🔑 Insufficient privileges: Not in reviewers

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@bors r=tgross35

without the @ maybe? or is something else messed up?

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bors commented Jan 15, 2025

@folkertdev: 🔑 Insufficient privileges: Not in reviewers

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Bors still requires permissions to r=somebody, a reviewer commenting r=me doesn’t actually do anything

@bors r+

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bors commented Jan 15, 2025

📌 Commit fef3dd4 has been approved by tgross35

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 Jan 15, 2025
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ah, I see this from time to time but the person actually doing r=some_name must also themselves have the privileges then. And then only with an actual delegate can I (without privileges) merge things. well, TIL.

jhpratt added a commit to jhpratt/rust that referenced this pull request Jan 16, 2025
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Rollup merge of rust-lang#135534 - folkertdev:fix-wasm-i128-f128, r=t…
0386232 
…gross35

use indirect return for `i128` and `f128` on wasm32

fixes rust-lang#135532

Based on https://github.com/WebAssembly/tool-conventions/blob/main/BasicCABI.md we now use an indirect return for  `i128`, `u128` and `f128`. That is what LLVM ended up doing anyway.

r? `@bjorn3`
@jhpratt jhpratt mentioned this pull request Jan 16, 2025
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bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 16, 2025
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Auto merge of rust-lang#135567 - jhpratt:rollup-eu4os4b, r=jhpratt
4dd5578 
Rollup of 5 pull requests

Successful merges:

 - rust-lang#134286 (Enable `unreachable_pub` lint in core)
 - rust-lang#135249 (Fix overflows in the implementation of `overflowing_literals` lint's help)
 - rust-lang#135534 (use indirect return for `i128` and `f128` on wasm32)
 - rust-lang#135556 (Clarify note in `std::sync::LazyLock` example)
 - rust-lang#135560 (Update `compiler-builtins` to 0.1.144)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 16, 2025
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Rollup merge of rust-lang#135534 - folkertdev:fix-wasm-i128-f128, r=t…
91fd468 
…gross35

use indirect return for `i128` and `f128` on wasm32

fixes rust-lang#135532

Based on https://github.com/WebAssembly/tool-conventions/blob/main/BasicCABI.md we now use an indirect return for  `i128`, `u128` and `f128`. That is what LLVM ended up doing anyway.

r? ``@bjorn3``
@matthiaskrgr matthiaskrgr mentioned this pull request Jan 16, 2025
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bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 16, 2025
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Auto merge of rust-lang#135569 - matthiaskrgr:rollup-8vs4lv6, r=matth…
049d780 
…iaskrgr

Rollup of 4 pull requests

Successful merges:

 - rust-lang#135249 (Fix overflows in the implementation of `overflowing_literals` lint's help)
 - rust-lang#135534 (use indirect return for `i128` and `f128` on wasm32)
 - rust-lang#135556 (Clarify note in `std::sync::LazyLock` example)
 - rust-lang#135560 (Update `compiler-builtins` to 0.1.144)

r? `@ghost`
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@bors r- rollup=iffy
#135569 (comment)

@bors bors 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-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jan 16, 2025
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bjorn3 commented Jan 16, 2025

tests/codegen/i128-wasm32-callconv.rs and tests/codegen/f128-wasm32-callconv.rs will need to be updated.

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I think just adding -O should fix it? I don't think looking at the opt-level=0 output is all that useful.

I do wonder whether it makes sense to lint for codegen tests that don't set the opt level in some way, because I think in most cases you'd want the stability of the output that that provides (and some //@ all-opt-levels could be used when the test just looks at e.g. what symbols are even defined by llvm)

@rustbot ready

@rustbot 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 Jan 16, 2025
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bjorn3 commented Jan 16, 2025

@bors r=tgross35

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bors commented Jan 16, 2025

📌 Commit 702134a has been approved by tgross35

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 Jan 16, 2025
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bors commented Jan 17, 2025

⌛ Testing commit 702134a with merge bcd0683...

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bors commented Jan 17, 2025

☀️ Test successful - checks-actions
Approved by: tgross35
Pushing bcd0683 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Jan 17, 2025
@bors bors merged commit bcd0683 into rust-lang:master Jan 17, 2025
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@rustbot rustbot added this to the 1.86.0 milestone Jan 17, 2025
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Finished benchmarking commit (bcd0683): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (secondary 2.7%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)		 - - 0
Regressions ❌
(secondary)		 2.7% [2.7%, 2.7%] 1
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 - - 0
All ❌✅ (primary) - - 0

Cycles

Results (secondary 2.5%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)		 - - 0
Regressions ❌
(secondary)		 2.5% [2.3%, 2.7%] 2
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 - - 0
All ❌✅ (primary) - - 0

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 764.673s -> 763.784s (-0.12%)
Artifact size: 326.10 MiB -> 326.10 MiB (-0.00%)

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ABI adjustment code for wasm doesn't handle 128bit ints and floats
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