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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/assembly/align_offset.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/assembly/align_offset.rs')
-rw-r--r-- | tests/assembly/align_offset.rs | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tests/assembly/align_offset.rs b/tests/assembly/align_offset.rs new file mode 100644 index 000000000..c5eefca34 --- /dev/null +++ b/tests/assembly/align_offset.rs @@ -0,0 +1,48 @@ +// assembly-output: emit-asm +// compile-flags: -Copt-level=1 +// only-x86_64 +// min-llvm-version: 14.0 +#![crate_type="rlib"] + +// CHECK-LABEL: align_offset_byte_ptr +// CHECK: leaq 31 +// CHECK: andq $-32 +// CHECK: subq +#[no_mangle] +pub fn align_offset_byte_ptr(ptr: *const u8) -> usize { + ptr.align_offset(32) +} + +// CHECK-LABEL: align_offset_byte_slice +// CHECK: leaq 31 +// CHECK: andq $-32 +// CHECK: subq +#[no_mangle] +pub fn align_offset_byte_slice(slice: &[u8]) -> usize { + slice.as_ptr().align_offset(32) +} + +// CHECK-LABEL: align_offset_word_ptr +// CHECK: leaq 31 +// CHECK: andq $-32 +// CHECK: subq +// CHECK: shrq +// This `ptr` is not known to be aligned, so it is required to check if it is at all possible to +// align. LLVM applies a simple mask. +// CHECK: orq +#[no_mangle] +pub fn align_offset_word_ptr(ptr: *const u32) -> usize { + ptr.align_offset(32) +} + +// CHECK-LABEL: align_offset_word_slice +// CHECK: leaq 31 +// CHECK: andq $-32 +// CHECK: subq +// CHECK: shrq +// `slice` is known to be aligned, so `!0` is not possible as a return +// CHECK-NOT: orq +#[no_mangle] +pub fn align_offset_word_slice(slice: &[u32]) -> usize { + slice.as_ptr().align_offset(32) +} |