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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:25 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:25 +0000 |
commit | 5363f350887b1e5b5dd21a86f88c8af9d7fea6da (patch) | |
tree | 35ca005eb6e0e9a1ba3bb5dbc033209ad445dc17 /src/test/assembly/is_aligned.rs | |
parent | Adding debian version 1.66.0+dfsg1-1. (diff) | |
download | rustc-5363f350887b1e5b5dd21a86f88c8af9d7fea6da.tar.xz rustc-5363f350887b1e5b5dd21a86f88c8af9d7fea6da.zip |
Merging upstream version 1.67.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/assembly/is_aligned.rs')
-rw-r--r-- | src/test/assembly/is_aligned.rs | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/test/assembly/is_aligned.rs b/src/test/assembly/is_aligned.rs new file mode 100644 index 000000000..04b5de834 --- /dev/null +++ b/src/test/assembly/is_aligned.rs @@ -0,0 +1,58 @@ +// assembly-output: emit-asm +// min-llvm-version: 14.0 +// only-x86_64 +// revisions: opt-speed opt-size +// [opt-speed] compile-flags: -Copt-level=1 +// [opt-size] compile-flags: -Copt-level=s +#![crate_type="rlib"] + +#![feature(core_intrinsics)] +#![feature(pointer_is_aligned)] + +// CHECK-LABEL: is_aligned_to_unchecked +// CHECK: decq +// CHECK-NEXT: testq +// CHECK-NEXT: sete +// CHECK: retq +#[no_mangle] +pub unsafe fn is_aligned_to_unchecked(ptr: *const u8, align: usize) -> bool { + unsafe { + std::intrinsics::assume(align.is_power_of_two()) + } + ptr.is_aligned_to(align) +} + +// CHECK-LABEL: is_aligned_1 +// CHECK: movb $1 +// CHECK: retq +#[no_mangle] +pub fn is_aligned_1(ptr: *const u8) -> bool { + ptr.is_aligned() +} + +// CHECK-LABEL: is_aligned_2 +// CHECK: testb $1 +// CHECK-NEXT: sete +// CHECK: retq +#[no_mangle] +pub fn is_aligned_2(ptr: *const u16) -> bool { + ptr.is_aligned() +} + +// CHECK-LABEL: is_aligned_4 +// CHECK: testb $3 +// CHECK-NEXT: sete +// CHECK: retq +#[no_mangle] +pub fn is_aligned_4(ptr: *const u32) -> bool { + ptr.is_aligned() +} + +// CHECK-LABEL: is_aligned_8 +// CHECK: testb $7 +// CHECK-NEXT: sete +// CHECK: retq +#[no_mangle] +pub fn is_aligned_8(ptr: *const u64) -> bool { + ptr.is_aligned() +} |