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authorbors <bors@rust-lang.org>2024-10-23 05:57:00 +0000
committerbors <bors@rust-lang.org>2024-10-23 05:57:00 +0000
commit9abfcb49002b82f46ad66ceb0b26cee8be2dc658 (patch)
treeaa8bccbfa0dd67611f41cb19546f84c19e0d2cec /tests/codegen
parente1f306899514ea80abc1d1c9f6a57762afb304a3 (diff)
parentb44a0fa61cafb6e9d61e4100c27e042cfe5c171a (diff)
downloadrust-9abfcb49002b82f46ad66ceb0b26cee8be2dc658.tar.gz
rust-9abfcb49002b82f46ad66ceb0b26cee8be2dc658.zip
Auto merge of #132053 - matthiaskrgr:rollup-u5ds6i3, r=matthiaskrgr
Rollup of 5 pull requests

Successful merges:

 - #131707 (Run most `core::num` tests in const context too)
 - #132002 (abi/compatibility: also test Option-like types)
 - #132026 (analyse: remove unused uncanonicalized field)
 - #132031 (Optimize `Rc<T>::default`)
 - #132040 (relnotes: fix stabilizations of `assume_init`)

r? `@ghost`
`@rustbot` modify labels: rollup
Diffstat (limited to 'tests/codegen')
-rw-r--r--tests/codegen/placement-new.rs12
1 files changed, 12 insertions, 0 deletions
diff --git a/tests/codegen/placement-new.rs b/tests/codegen/placement-new.rs
index edb25df5eb4..0ec2b6a6f20 100644
--- a/tests/codegen/placement-new.rs
+++ b/tests/codegen/placement-new.rs
@@ -1,9 +1,11 @@
 //@ compile-flags: -O
+//@ compile-flags: -Zmerge-functions=disabled
 #![crate_type = "lib"]
 
 // Test to check that types with "complex" destructors, but trivial `Default` impls
 // are constructed directly into the allocation in `Box::default` and `Arc::default`.
 
+use std::rc::Rc;
 use std::sync::Arc;
 
 // CHECK-LABEL: @box_default_inplace
@@ -16,6 +18,16 @@ pub fn box_default_inplace() -> Box<(String, String)> {
     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
 #[no_mangle]
 pub fn arc_default_inplace() -> Arc<(String, String)> {