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Update to LLVM 21 #143684

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afeee9e
Update to LLVM 21
nikic Jul 9, 2025
8b8e1c5
Updating host toolchain
nikic Jul 17, 2025
4f246e4
Fix nvptx-safe-naming.rs test on LLVM 21
nikic Jul 22, 2025
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4 changes: 2 additions & 2 deletions .gitmodules
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Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,8 @@
shallow = true
[submodule "src/llvm-project"]
path = src/llvm-project
url = https://github.com/rust-lang/llvm-project.git
branch = rustc/20.1-2025-07-13
url = https://github.com/nikic/llvm-project.git
branch = rust-llvm-21
shallow = true
[submodule "src/doc/embedded-book"]
path = src/doc/embedded-book
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2 changes: 1 addition & 1 deletion src/ci/docker/scripts/build-clang.sh
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Expand Up @@ -5,7 +5,7 @@ set -ex
source shared.sh

# Try to keep the LLVM version here in sync with src/ci/scripts/install-clang.sh
LLVM=llvmorg-20.1.0-rc2
LLVM=llvmorg-21.1.0-rc1

mkdir llvm-project
cd llvm-project
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2 changes: 1 addition & 1 deletion src/llvm-project
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Submodule llvm-project updated from e8a2ff to e4c2cd
6 changes: 5 additions & 1 deletion tests/assembly/nvptx-safe-naming.rs
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@@ -1,6 +1,9 @@
//@ assembly-output: ptx-linker
//@ compile-flags: --crate-type cdylib -Z unstable-options -Clinker-flavor=llbc
//@ only-nvptx64
//@ revisions: LLVM20 LLVM21
//@ [LLVM21] min-llvm-version: 21
//@ [LLVM20] max-llvm-major-version: 20

#![feature(abi_ptx)]
#![no_std]
Expand All @@ -15,7 +18,8 @@ extern crate breakpoint_panic_handler;
#[no_mangle]
pub unsafe extern "ptx-kernel" fn top_kernel(a: *const u32, b: *mut u32) {
// CHECK: call.uni (retval0),
// CHECK-NEXT: [[IMPL_FN]]
// LLVM20-NEXT: [[IMPL_FN]]
// LLVM21-SAME: [[IMPL_FN]]
*b = deep::private::MyStruct::new(*a).square();
}

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