mirror of https://github.com/rust-lang/rust.git
33 lines
839 B
Rust
33 lines
839 B
Rust
// compile-flags: -C no-prepopulate-passes -Copt-level=0
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// needs-asm-support
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// only-x86_64
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#![crate_type = "lib"]
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#![feature(naked_functions)]
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use std::arch::asm;
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// CHECK: Function Attrs: naked
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// CHECK-NEXT: define{{.*}}void @naked_empty()
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#[no_mangle]
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#[naked]
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pub unsafe extern "C" fn naked_empty() {
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// CHECK-NEXT: {{.+}}:
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// CHECK-NEXT: call void asm
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// CHECK-NEXT: unreachable
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asm!("ret",
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options(noreturn));
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}
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// CHECK: Function Attrs: naked
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// CHECK-NEXT: define{{.*}}i{{[0-9]+}} @naked_with_args_and_return(i64 %a, i64 %b)
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#[no_mangle]
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#[naked]
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pub unsafe extern "C" fn naked_with_args_and_return(a: isize, b: isize) -> isize {
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// CHECK-NEXT: {{.+}}:
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// CHECK-NEXT: call void asm
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// CHECK-NEXT: unreachable
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asm!("lea rax, [rdi + rsi]",
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"ret",
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options(noreturn));
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}
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