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40 lines
1.1 KiB
Rust
40 lines
1.1 KiB
Rust
//@ compile-flags: -Copt-level=3
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//@ compile-flags: -Zmerge-functions=disabled
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#![crate_type = "lib"]
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// Test to check that types with "complex" destructors, but trivial `Default` impls
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// are constructed directly into the allocation in `Box::default` and `Arc::default`.
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use std::rc::Rc;
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use std::sync::Arc;
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// CHECK-LABEL: @box_default_inplace
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#[no_mangle]
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pub fn box_default_inplace() -> Box<(String, String)> {
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// CHECK-NOT: alloca
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// CHECK: [[BOX:%.*]] = {{.*}}call {{.*}}__rust_alloc(
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// CHECK-NOT: call void @llvm.memcpy
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// CHECK: ret ptr [[BOX]]
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Box::default()
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}
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// CHECK-LABEL: @rc_default_inplace
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#[no_mangle]
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pub fn rc_default_inplace() -> Rc<(String, String)> {
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// CHECK-NOT: alloca
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// CHECK: [[RC:%.*]] = {{.*}}call {{.*}}__rust_alloc(
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// CHECK-NOT: call void @llvm.memcpy
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// CHECK: ret ptr [[RC]]
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Rc::default()
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}
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// CHECK-LABEL: @arc_default_inplace
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#[no_mangle]
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pub fn arc_default_inplace() -> Arc<(String, String)> {
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// CHECK-NOT: alloca
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// CHECK: [[ARC:%.*]] = {{.*}}call {{.*}}__rust_alloc(
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// CHECK-NOT: call void @llvm.memcpy
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// CHECK: ret ptr [[ARC]]
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Arc::default()
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}
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