1 files changed, 97 insertions, 0 deletions
diff --git a/tests/codegen-llvm/sparc-struct-abi.rs b/tests/codegen-llvm/sparc-struct-abi.rs
new file mode 100644
index 00000000000..32d2c5bb0ef
--- /dev/null
+++ b/tests/codegen-llvm/sparc-struct-abi.rs
@@ -0,0 +1,97 @@
+// Checks that we correctly codegen extern "C" functions returning structs.
+// See issues #52638 and #86163.
+
+//@ add-core-stubs
+//@ compile-flags: -Copt-level=3 --target=sparc64-unknown-linux-gnu --crate-type=rlib
+//@ needs-llvm-components: sparc
+#![feature(no_core, lang_items)]
+#![no_core]
+
+extern crate minicore;
+use minicore::*;
+
+#[repr(C)]
+pub struct Bool {
+    b: bool,
+}
+
+// CHECK: define{{.*}} i64 @structbool()
+// CHECK-NEXT: start:
+// CHECK-NEXT: ret i64 72057594037927936
+#[no_mangle]
+pub extern "C" fn structbool() -> Bool {
+    Bool { b: true }
+}
+
+#[repr(C)]
+pub struct BoolFloat {
+    b: bool,
+    f: f32,
+}
+
+// CHECK: define inreg { i32, float } @structboolfloat()
+// CHECK-NEXT: start:
+// CHECK-NEXT: ret { i32, float } { i32 16777216, float 0x40091EB860000000 }
+#[no_mangle]
+pub extern "C" fn structboolfloat() -> BoolFloat {
+    BoolFloat { b: true, f: 3.14 }
+}
+
+// CHECK: define void @structboolfloat_input({ i32, float } inreg %0)
+// CHECK-NEXT: start:
+#[no_mangle]
+pub extern "C" fn structboolfloat_input(a: BoolFloat) {}
+
+#[repr(C)]
+pub struct ShortDouble {
+    s: i16,
+    d: f64,
+}
+
+// CHECK: define { i64, double } @structshortdouble()
+// CHECK-NEXT: start:
+// CHECK-NEXT: ret { i64, double } { i64 34621422135410688, double 3.140000e+00 }
+#[no_mangle]
+pub extern "C" fn structshortdouble() -> ShortDouble {
+    ShortDouble { s: 123, d: 3.14 }
+}
+
+// CHECK: define void @structshortdouble_input({ i64, double } %0)
+// CHECK-NEXT: start:
+#[no_mangle]
+pub extern "C" fn structshortdouble_input(a: ShortDouble) {}
+
+#[repr(C)]
+pub struct FloatLongFloat {
+    f: f32,
+    i: i64,
+    g: f32,
+}
+
+// CHECK: define inreg { float, i32, i64, float, i32 } @structfloatlongfloat()
+// CHECK-NEXT: start:
+// CHECK-NEXT: ret { float, i32, i64, float, i32 } { float 0x3FB99999A0000000, i32 undef, i64 123, float 0x40091EB860000000, i32 undef }
+#[no_mangle]
+pub extern "C" fn structfloatlongfloat() -> FloatLongFloat {
+    FloatLongFloat { f: 0.1, i: 123, g: 3.14 }
+}
+
+#[repr(C)]
+pub struct FloatFloat {
+    f: f32,
+    g: f32,
+}
+
+#[repr(C)]
+pub struct NestedStructs {
+    a: FloatFloat,
+    b: FloatFloat,
+}
+
+// CHECK: define inreg { float, float, float, float } @structnestestructs()
+// CHECK-NEXT: start:
+// CHECK-NEXT: ret { float, float, float, float } { float 0x3FB99999A0000000, float 0x3FF19999A0000000, float 0x40019999A0000000, float 0x400A666660000000 }
+#[no_mangle]
+pub extern "C" fn structnestestructs() -> NestedStructs {
+    NestedStructs { a: FloatFloat { f: 0.1, g: 1.1 }, b: FloatFloat { f: 2.2, g: 3.3 } }
+}