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Promote aarch64-pc-windows-msvc to Tier 1 #145682

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Merged
bors merged 1 commit into rust-lang:master from dpaoliello:arm64tier1
Sep 4, 2025
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View file Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ pub(crate) fn target() -> Target {
llvm_target: "aarch64-pc-windows-msvc".into(),
metadata: TargetMetadata {
description: Some("ARM64 Windows MSVC".into()),
tier: Some(2),
tier: Some(1),
host_tools: Some(true),
std: Some(true),
},
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2 changes: 1 addition & 1 deletion src/bootstrap/src/core/build_steps/llvm.rs
View file Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,7 @@ pub(crate) fn is_ci_llvm_available_for_target(
// tier 1
("aarch64-unknown-linux-gnu", false),
("aarch64-apple-darwin", false),
("aarch64-pc-windows-msvc", false),
("i686-pc-windows-gnu", false),
("i686-pc-windows-msvc", false),
("i686-unknown-linux-gnu", false),
Expand All @@ -213,7 +214,6 @@ pub(crate) fn is_ci_llvm_available_for_target(
("x86_64-pc-windows-gnu", true),
("x86_64-pc-windows-msvc", true),
// tier 2 with host tools
("aarch64-pc-windows-msvc", false),
("aarch64-unknown-linux-musl", false),
("arm-unknown-linux-gnueabi", false),
("arm-unknown-linux-gnueabihf", false),
Expand Down
2 changes: 1 addition & 1 deletion src/doc/rustc/src/platform-support.md
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,7 @@ All tier 1 targets with host tools support the full standard library.
target | notes
-------|-------
[`aarch64-apple-darwin`](platform-support/apple-darwin.md) | ARM64 macOS (11.0+, Big Sur+)
[`aarch64-pc-windows-msvc`](platform-support/windows-msvc.md) | ARM64 Windows MSVC
`aarch64-unknown-linux-gnu` | ARM64 Linux (kernel 4.1+, glibc 2.17+)
[`i686-pc-windows-msvc`](platform-support/windows-msvc.md) | 32-bit MSVC (Windows 10+, Windows Server 2016+, Pentium 4) [^x86_32-floats-return-ABI] [^win32-msvc-alignment]
`i686-unknown-linux-gnu` | 32-bit Linux (kernel 3.2+, glibc 2.17+, Pentium 4) [^x86_32-floats-return-ABI]
Expand Down Expand Up @@ -88,7 +89,6 @@ so Rustup may install the documentation for a similar tier 1 target instead.
target | notes
-------|-------
[`aarch64-pc-windows-gnullvm`](platform-support/windows-gnullvm.md) | ARM64 MinGW (Windows 10+), LLVM ABI
[`aarch64-pc-windows-msvc`](platform-support/windows-msvc.md) | ARM64 Windows MSVC
[`aarch64-unknown-linux-musl`](platform-support/aarch64-unknown-linux-musl.md) | ARM64 Linux with musl 1.2.3
[`aarch64-unknown-linux-ohos`](platform-support/openharmony.md) | ARM64 OpenHarmony
`arm-unknown-linux-gnueabi` | Armv6 Linux (kernel 3.2+, glibc 2.17)
Expand Down
5 changes: 1 addition & 4 deletions src/doc/rustc/src/platform-support/windows-msvc.md
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Original file line number Diff line number Diff line change
Expand Up @@ -4,13 +4,10 @@ Windows MSVC targets.

**Tier 1 with host tools:**

- `aarch64-pc-windows-msvc`: Windows on ARM64.
- `i686-pc-windows-msvc`: Windows on 32-bit x86.
- `x86_64-pc-windows-msvc`: Windows on 64-bit x86.

**Tier 2 with host tools:**

- `aarch64-pc-windows-msvc`: Windows on ARM64.

## Target maintainers

[@ChrisDenton](https://github.com/ChrisDenton)
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