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add codegen test

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Slanterns 2024-10-22 01:33:22 -07:00
parent 5b12d906bb
commit 7782401c52
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1 changed files with 12 additions and 0 deletions
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tests/codegen/placement-new.rs
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@ -1,9 +1,11 @@
//@ compile-flags: -O //@ compile-flags: -O
//@ compile-flags: -Zmerge-functions=disabled
#![crate_type = "lib"] #![crate_type = "lib"]
// Test to check that types with "complex" destructors, but trivial `Default` impls // Test to check that types with "complex" destructors, but trivial `Default` impls
// are constructed directly into the allocation in `Box::default` and `Arc::default`. // are constructed directly into the allocation in `Box::default` and `Arc::default`.
use std::rc::Rc;
use std::sync::Arc; use std::sync::Arc;
// CHECK-LABEL: @box_default_inplace // CHECK-LABEL: @box_default_inplace
@ -16,6 +18,16 @@ pub fn box_default_inplace() -> Box<(String, String)> {
Box::default() Box::default()
} }
// CHECK-LABEL: @rc_default_inplace
#[no_mangle]
pub fn rc_default_inplace() -> Rc<(String, String)> {
// CHECK-NOT: alloca
// CHECK: [[RC:%.*]] = {{.*}}call {{.*}}__rust_alloc(
// CHECK-NOT: call void @llvm.memcpy
// CHECK: ret ptr [[RC]]
Rc::default()
}
// CHECK-LABEL: @arc_default_inplace // CHECK-LABEL: @arc_default_inplace
#[no_mangle] #[no_mangle]
pub fn arc_default_inplace() -> Arc<(String, String)> { pub fn arc_default_inplace() -> Arc<(String, String)> {