45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
//@ compile-flags: -C no-prepopulate-passes -Copt-level=0 -Zmin-function-alignment=16
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//@ needs-asm-support
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//@ ignore-arm no "ret" mnemonic
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//@ ignore-wasm32 aligning functions is not currently supported on wasm (#143368)
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#![feature(fn_align)]
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#![crate_type = "lib"]
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// functions without explicit alignment use the global minimum
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//
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// CHECK: .balign 16
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#[no_mangle]
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#[unsafe(naked)]
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pub extern "C" fn naked_no_explicit_align() {
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core::arch::naked_asm!("ret")
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}
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// CHECK: .balign 16
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#[no_mangle]
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#[align(8)]
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#[unsafe(naked)]
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pub extern "C" fn naked_lower_align() {
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core::arch::naked_asm!("ret")
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}
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// CHECK: .balign 32
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#[no_mangle]
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#[align(32)]
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#[unsafe(naked)]
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pub extern "C" fn naked_higher_align() {
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core::arch::naked_asm!("ret")
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}
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// cold functions follow the same rules as other functions
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//
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// in GCC, the `-falign-functions` does not apply to cold functions, but
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// `-Zmin-function-alignment` applies to all functions.
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//
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// CHECK: .balign 16
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#[no_mangle]
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#[cold]
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#[unsafe(naked)]
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pub extern "C" fn no_explicit_align_cold() {
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core::arch::naked_asm!("ret")
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}
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