79 lines
1.8 KiB
Rust
79 lines
1.8 KiB
Rust
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// Checks that the cold attribute adds the llvm cold attribute.
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//
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//@ reference: attributes.codegen.cold.intro
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//@ reference: attributes.codegen.cold.trait
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//@ edition:2024
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//@ compile-flags: -Copt-level=0
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#![crate_type = "lib"]
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// CHECK-LABEL: ; cold_attribute::free_function
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// CHECK-NEXT: Function Attrs: cold {{.*}}
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#[cold]
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pub fn free_function() {}
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// CHECK-LABEL: ; cold_attribute::async_block
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// CHECK-NEXT: Function Attrs: cold {{.*}}
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#[cold]
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pub async fn async_block() {
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async fn x(f: impl Future<Output = ()>) {
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f.await;
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}
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x(
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// CHECK-LABEL: ; cold_attribute::async_block::{{{{closure}}}}::{{{{closure}}}}
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// CHECK-NEXT: Function Attrs: cold {{.*}}
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#[cold]
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async {},
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)
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.await;
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}
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pub fn closure() {
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fn x(f: impl Fn()) {
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f()
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}
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x(
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// CHECK-LABEL: ; cold_attribute::closure::{{{{closure}}}}
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// CHECK-NEXT: Function Attrs: cold {{.*}}
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#[cold]
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|| {},
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);
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}
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pub struct S;
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impl S {
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// CHECK-LABEL: ; cold_attribute::S::method
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// CHECK-NEXT: Function Attrs: cold {{.*}}
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#[cold]
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pub fn method(&self) {}
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}
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pub trait Trait {
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// CHECK-LABEL: ; cold_attribute::Trait::trait_fn
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// CHECK-NEXT: Function Attrs: cold {{.*}}
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#[cold]
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fn trait_fn(&self) {}
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#[cold]
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fn trait_fn_overridden(&self) {}
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fn impl_fn(&self);
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}
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impl Trait for S {
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// CHECK-LABEL: ; <cold_attribute::S as cold_attribute::Trait>::impl_fn
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// CHECK-NEXT: Function Attrs: cold {{.*}}
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#[cold]
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fn impl_fn(&self) {
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self.trait_fn();
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}
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// This does not have #[cold], and does not inherit the cold attribute from the trait.
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// CHECK-LABEL: ; <cold_attribute::S as cold_attribute::Trait>::trait_fn_overridden
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// CHECK: ; Function Attrs:
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// CHECK-NOT: cold
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// CHECK: define
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fn trait_fn_overridden(&self) {}
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}
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