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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 18:31:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 18:31:44 +0000 |
commit | c23a457e72abe608715ac76f076f47dc42af07a5 (patch) | |
tree | 2772049aaf84b5c9d0ed12ec8d86812f7a7904b6 /tests/codegen/asm-maybe-uninit.rs | |
parent | Releasing progress-linux version 1.73.0+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-c23a457e72abe608715ac76f076f47dc42af07a5.tar.xz rustc-c23a457e72abe608715ac76f076f47dc42af07a5.zip |
Merging upstream version 1.74.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/codegen/asm-maybe-uninit.rs')
-rw-r--r-- | tests/codegen/asm-maybe-uninit.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/codegen/asm-maybe-uninit.rs b/tests/codegen/asm-maybe-uninit.rs new file mode 100644 index 000000000..d7e4a9489 --- /dev/null +++ b/tests/codegen/asm-maybe-uninit.rs @@ -0,0 +1,27 @@ +// compile-flags: -O +// only-x86_64 + +#![crate_type = "rlib"] +#![allow(asm_sub_register)] + +use std::mem::MaybeUninit; +use std::arch::asm; + +// CHECK-LABEL: @int +#[no_mangle] +pub unsafe fn int(x: MaybeUninit<i32>) -> MaybeUninit<i32> { + let y: MaybeUninit<i32>; + asm!("/*{}{}*/", in(reg) x, out(reg) y); + y +} + +// CHECK-LABEL: @inout +#[no_mangle] +pub unsafe fn inout(mut x: i32) -> MaybeUninit<u32> { + let mut y: MaybeUninit<u32>; + asm!("/*{}*/", inout(reg) x => y); + asm!("/*{}*/", inout(reg) y => x); + asm!("/*{}*/", inlateout(reg) x => y); + asm!("/*{}*/", inlateout(reg) y => x); + y +} |