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use PassMode::Direct for vector types on s390x#135785

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folkertdev:s390x-vector-passmode-direct
Jan 26, 2025
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use PassMode::Direct for vector types on s390x#135785
bors merged 1 commit intorust-lang:masterfrom
folkertdev:s390x-vector-passmode-direct

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@folkertdev folkertdev commented Jan 20, 2025

closes #135744
tracking issue: #130869

Previously, all vector types were type erased to Ni8, now we pass non-wrapped vector types directly. That skips emitting a bunch of casting logic in rustc, that LLVM then has to clean up. The initial LLVM IR is also a bit more readable.

This calling convention is tested extensively in tests/assembly/s390x-vector-abi.rs, showing that this change has no impact on the ABI in practice.

r? @taiki-e

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rustbot commented Jan 20, 2025

Failed to set assignee to taiki-e: invalid assignee

Note: Only org members with at least the repository "read" role, users with write permissions, or people who have commented on the PR may be assigned.

@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 20, 2025
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taiki-e commented Jan 20, 2025 •
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Thanks! The change looks good to me. Could you add a test that checks generated LLVM IR is expected (i.e., test case for #135744) to tests/codegen/?

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tgross35 commented Jan 20, 2025

cc @uweigand

@folkertdev folkertdev force-pushed the s390x-vector-passmode-direct branch from 916b1da to 893d81f Compare January 20, 2025 20:02
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folkertdev commented Jan 20, 2025

I added a codegen test, using compile-flags: --target s390x-unknown-linux-gnu -O so hopefully the LLVM IR is stable

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folkertdev commented Jan 20, 2025

r? compiler

@jieyouxu jieyouxu added the O-SystemZ Target: SystemZ processors (s390x) label Jan 21, 2025
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jieyouxu commented Jan 21, 2025

Maybe r? @bjorn3 since you discussed this on the linked issue

@rustbot rustbot assigned bjorn3 and unassigned fee1-dead Jan 21, 2025
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bjorn3 commented Jan 23, 2025

@bors r+

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bors commented Jan 23, 2025

📌 Commit 893d81f has been approved by bjorn3

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 23, 2025
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 25, 2025
@matthiaskrgr
Rollup merge of rust-lang#135785 - folkertdev:s390x-vector-passmode-d…
b73f4c2 
…irect, r=bjorn3

use `PassMode::Direct` for vector types on `s390x`

closes rust-lang#135744
tracking issue: rust-lang#130869

Previously, all vector types were type erased to `Ni8`, now we pass non-wrapped vector types directly. That skips emitting a bunch of casting logic in rustc, that LLVM then has to clean up. The initial LLVM IR is also a bit more readable.

This calling convention is tested extensively in `tests/assembly/s390x-vector-abi.rs`, showing that this change has no impact on the ABI in practice.

r? `@taiki-e`
@matthiaskrgr matthiaskrgr mentioned this pull request Jan 25, 2025
Closed
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 25, 2025
@bors
Auto merge of rust-lang#136045 - matthiaskrgr:rollup-70c22eb, r=<try>
9859fda 
Rollup of 7 pull requests

Successful merges:

 - rust-lang#130808 (Fix linking for symbols starting with ? on i686-pc-windows-msvc)
 - rust-lang#133138 (Target modifiers (special marked options) are recorded in metainfo)
 - rust-lang#133154 (Reword resolve errors caused by likely missing crate in dep tree)
 - rust-lang#135707 (Shorten linker output even more when `--verbose` is not present)
 - rust-lang#135764 (Fix tests on LLVM 20)
 - rust-lang#135785 (use `PassMode::Direct` for vector types on `s390x`)
 - rust-lang#135818 (tests: Port `translation` to rmake.rs)

Failed merges:

 - rust-lang#133951 (Make the wasm_c_abi future compat warning a hard error)

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

try-job: aarch64-apple
try-job: i686-mingw
try-job: x86_64-gnu-llvm-19-3
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 25, 2025
@matthiaskrgr
Rollup merge of rust-lang#135785 - folkertdev:s390x-vector-passmode-d…
9d2f089 
…irect, r=bjorn3

use `PassMode::Direct` for vector types on `s390x`

closes rust-lang#135744
tracking issue: rust-lang#130869

Previously, all vector types were type erased to `Ni8`, now we pass non-wrapped vector types directly. That skips emitting a bunch of casting logic in rustc, that LLVM then has to clean up. The initial LLVM IR is also a bit more readable.

This calling convention is tested extensively in `tests/assembly/s390x-vector-abi.rs`, showing that this change has no impact on the ABI in practice.

r? ``@taiki-e``
@matthiaskrgr matthiaskrgr mentioned this pull request Jan 25, 2025
Closed
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 25, 2025
@bors
Auto merge of rust-lang#136049 - matthiaskrgr:rollup-2hfmkoq, r=<try>
a37c61f 
Rollup of 6 pull requests

Successful merges:

 - rust-lang#130808 (Fix linking for symbols starting with ? on i686-pc-windows-msvc)
 - rust-lang#133154 (Reword resolve errors caused by likely missing crate in dep tree)
 - rust-lang#135707 (Shorten linker output even more when `--verbose` is not present)
 - rust-lang#135764 (Fix tests on LLVM 20)
 - rust-lang#135785 (use `PassMode::Direct` for vector types on `s390x`)
 - rust-lang#135818 (tests: Port `translation` to rmake.rs)

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

try-job: aarch64-apple
try-job: i686-mingw
try-job: x86_64-gnu-llvm-19-3
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jan 25, 2025
@matthiaskrgr
Rollup merge of rust-lang#135785 - folkertdev:s390x-vector-passmode-d…
abf7651 
…irect, r=bjorn3

use `PassMode::Direct` for vector types on `s390x`

closes rust-lang#135744
tracking issue: rust-lang#130869

Previously, all vector types were type erased to `Ni8`, now we pass non-wrapped vector types directly. That skips emitting a bunch of casting logic in rustc, that LLVM then has to clean up. The initial LLVM IR is also a bit more readable.

This calling convention is tested extensively in `tests/assembly/s390x-vector-abi.rs`, showing that this change has no impact on the ABI in practice.

r? ```@taiki-e```
@matthiaskrgr matthiaskrgr mentioned this pull request Jan 25, 2025
Closed
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 25, 2025
@bors
Auto merge of rust-lang#136051 - matthiaskrgr:rollup-g2pbn2w, r=<try>
9f5ff93 
Rollup of 4 pull requests

Successful merges:

 - rust-lang#135707 (Shorten linker output even more when `--verbose` is not present)
 - rust-lang#135764 (Fix tests on LLVM 20)
 - rust-lang#135785 (use `PassMode::Direct` for vector types on `s390x`)
 - rust-lang#135818 (tests: Port `translation` to rmake.rs)

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

try-job: aarch64-apple
try-job: i686-mingw
try-job: x86_64-gnu-llvm-19-3
@jhpratt jhpratt mentioned this pull request Jan 26, 2025
Merged
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 26, 2025
@bors
Auto merge of rust-lang#136085 - jhpratt:rollup-dxmb2h2, r=jhpratt
c2270be 
Rollup of 7 pull requests

Successful merges:

 - rust-lang#133951 (Make the wasm_c_abi future compat warning a hard error)
 - rust-lang#134283 (fix(libtest): Deprecate '--logfile')
 - rust-lang#135785 (use `PassMode::Direct` for vector types on `s390x`)
 - rust-lang#135948 (Update emscripten std tests)
 - rust-lang#135951 (Use `fmt::from_fn` in more places in the compiler)
 - rust-lang#136031 (Expand polonius MIR dump)
 - rust-lang#136032 (Account for mutable borrow in argument suggestion)

Failed merges:

 - rust-lang#135635 (Move `std::io::pipe` code into its own file)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 61e572b into rust-lang:master Jan 26, 2025
@rustbot rustbot added this to the 1.86.0 milestone Jan 26, 2025
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Jan 26, 2025
@rust-timer
Unrolled build for rust-lang#135785
5965fc0 
Rollup merge of rust-lang#135785 - folkertdev:s390x-vector-passmode-direct, r=bjorn3

use `PassMode::Direct` for vector types on `s390x`

closes rust-lang#135744
tracking issue: rust-lang#130869

Previously, all vector types were type erased to `Ni8`, now we pass non-wrapped vector types directly. That skips emitting a bunch of casting logic in rustc, that LLVM then has to clean up. The initial LLVM IR is also a bit more readable.

This calling convention is tested extensively in `tests/assembly/s390x-vector-abi.rs`, showing that this change has no impact on the ABI in practice.

r? ````@taiki-e````
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O-SystemZ Target: SystemZ processors (s390x) S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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vector types are passed incorrectly on s390x

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@folkertdev @rustbot @taiki-e @tgross35 @jieyouxu @bjorn3 @bors @fee1-dead