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32 lines
775 B
Rust
32 lines
775 B
Rust
// Checks that naked functions are never inlined.
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// compile-flags: -O -Zmir-opt-level=3
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// needs-asm-support
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// ignore-wasm32
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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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#[naked]
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#[no_mangle]
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pub unsafe extern "C" fn f() {
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// Check that f has naked and noinline attributes.
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//
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// CHECK: define {{(dso_local )?}}void @f() unnamed_addr [[ATTR:#[0-9]+]]
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// CHECK-NEXT: start:
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// CHECK-NEXT: call void asm
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asm!("", options(noreturn));
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}
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#[no_mangle]
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pub unsafe fn g() {
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// Check that call to f is not inlined.
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//
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// CHECK-LABEL: define {{(dso_local )?}}void @g()
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// CHECK-NEXT: start:
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// CHECK-NEXT: call void @f()
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f();
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}
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// CHECK: attributes [[ATTR]] = { naked{{.*}}noinline{{.*}} }
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