mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-31 13:04:42 +00:00
44 lines
1.1 KiB
Rust
44 lines
1.1 KiB
Rust
//@ revisions: align16 align1024
|
|
//@ compile-flags: -C no-prepopulate-passes -Z mir-opt-level=0
|
|
//@ [align16] compile-flags: -Zmin-function-alignment=16
|
|
//@ [align1024] compile-flags: -Zmin-function-alignment=1024
|
|
|
|
#![crate_type = "lib"]
|
|
#![feature(fn_align)]
|
|
|
|
// functions without explicit alignment use the global minimum
|
|
//
|
|
// CHECK-LABEL: @no_explicit_align
|
|
// align16: align 16
|
|
// align1024: align 1024
|
|
#[no_mangle]
|
|
pub fn no_explicit_align() {}
|
|
|
|
// CHECK-LABEL: @lower_align
|
|
// align16: align 16
|
|
// align1024: align 1024
|
|
#[no_mangle]
|
|
#[repr(align(8))]
|
|
pub fn lower_align() {}
|
|
|
|
// the higher value of min-function-alignment and repr(align) wins out
|
|
//
|
|
// CHECK-LABEL: @higher_align
|
|
// align16: align 32
|
|
// align1024: align 1024
|
|
#[no_mangle]
|
|
#[repr(align(32))]
|
|
pub fn higher_align() {}
|
|
|
|
// cold functions follow the same rules as other functions
|
|
//
|
|
// in GCC, the `-falign-functions` does not apply to cold functions, but
|
|
// `-Zmin-function-alignment` applies to all functions.
|
|
//
|
|
// CHECK-LABEL: @no_explicit_align_cold
|
|
// align16: align 16
|
|
// align1024: align 1024
|
|
#[no_mangle]
|
|
#[cold]
|
|
pub fn no_explicit_align_cold() {}
|