diff options
| author | clubby789 <jamie@hill-daniel.co.uk> | 2025-07-17 21:47:00 +0100 |
|---|---|---|
| committer | clubby789 <jamie@hill-daniel.co.uk> | 2025-08-20 17:08:46 +0100 |
| commit | 8ea3b093819aabd92a605b42989341da0c97c0d6 (patch) | |
| tree | 3316419d585c84e5ee1fd20df3fb904f9e69d4bd /tests/codegen-llvm | |
| parent | 1c9952f4dd6e0947ee91f07130c03813a088a894 (diff) | |
| download | rust-8ea3b093819aabd92a605b42989341da0c97c0d6.tar.gz rust-8ea3b093819aabd92a605b42989341da0c97c0d6.zip | |
Pass `alloc-variant-zeroed` to LLVM
Diffstat (limited to 'tests/codegen-llvm')
| -rw-r--r-- | tests/codegen-llvm/vec-calloc.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/codegen-llvm/vec-calloc.rs b/tests/codegen-llvm/vec-calloc.rs index d1c320ead01..15971bbfa00 100644 --- a/tests/codegen-llvm/vec-calloc.rs +++ b/tests/codegen-llvm/vec-calloc.rs @@ -1,4 +1,6 @@ +//@ revisions: normal llvm21 //@ compile-flags: -Copt-level=3 -Z merge-functions=disabled +//@ [llvm21] min-llvm-version: 21 //@ only-x86_64 #![crate_type = "lib"] @@ -176,6 +178,24 @@ pub fn vec_option_i32(n: usize) -> Vec<Option<i32>> { vec![None; n] } +// LLVM21-LABEL: @vec_array +#[cfg(llvm21)] +#[no_mangle] +pub fn vec_array(n: usize) -> Vec<[u32; 1_000_000]> { + // LLVM21-NOT: call {{.*}}alloc::vec::from_elem + // LLVM21-NOT: call {{.*}}reserve + // LLVM21-NOT: call {{.*}}__rust_alloc( + + // LLVM21: call {{.*}}__rust_alloc_zeroed( + + // LLVM21-NOT: call {{.*}}alloc::vec::from_elem + // LLVM21-NOT: call {{.*}}reserve + // LLVM21-NOT: call {{.*}}__rust_alloc( + + // LLVM21: ret void + vec![[0; 1_000_000]; 3] +} + // Ensure that __rust_alloc_zeroed gets the right attributes for LLVM to optimize it away. // CHECK: declare noalias noundef ptr @{{.*}}__rust_alloc_zeroed(i64 noundef, i64 allocalign noundef) unnamed_addr [[RUST_ALLOC_ZEROED_ATTRS:#[0-9]+]] |