1 files changed, 111 insertions, 0 deletions
diff --git a/tests/codegen-llvm/repr/transparent-byval-struct-ptr.rs b/tests/codegen-llvm/repr/transparent-byval-struct-ptr.rs
new file mode 100644
index 00000000000..0918884144f
--- /dev/null
+++ b/tests/codegen-llvm/repr/transparent-byval-struct-ptr.rs
@@ -0,0 +1,111 @@
+//@ add-core-stubs
+//@ revisions: i686-linux i686-freebsd x64-linux x64-apple
+//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes
+
+//@[i686-linux] compile-flags: --target i686-unknown-linux-gnu
+//@[i686-linux] needs-llvm-components: x86
+//@[i686-freebsd] compile-flags: --target i686-unknown-freebsd
+//@[i686-freebsd] needs-llvm-components: x86
+//@[x64-linux] compile-flags: --target x86_64-unknown-linux-gnu
+//@[x64-linux] needs-llvm-components: x86
+//@[x64-apple] compile-flags: --target x86_64-apple-darwin
+//@[x64-apple] needs-llvm-components: x86
+
+// See ./transparent.rs
+// Some platforms pass large aggregates using immediate arrays in LLVMIR
+// Other platforms pass large aggregates using by-value struct pointer in LLVMIR
+// Yet more platforms pass large aggregates using opaque pointer in LLVMIR
+// This covers the "by-value struct pointer" case.
+
+#![feature(no_core, lang_items, transparent_unions)]
+#![crate_type = "lib"]
+#![no_std]
+#![no_core]
+
+extern crate minicore;
+use minicore::*;
+
+impl Copy for BigS {}
+impl Copy for BigU {}
+
+#[repr(C)]
+pub struct BigS([u32; 16]);
+
+#[repr(transparent)]
+pub struct TsBigS(BigS);
+
+#[repr(transparent)]
+pub union TuBigS {
+    field: BigS,
+}
+
+#[repr(transparent)]
+pub enum TeBigS {
+    Variant(BigS),
+}
+
+// CHECK: define{{.*}}void @test_BigS(ptr [[BIGS_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGS_RET_ATTRS2:.*]], ptr [[BIGS_ARG_ATTRS1:.*]] byval([64 x i8]) [[BIGS_ARG_ATTRS2:.*]])
+#[no_mangle]
+pub extern "C" fn test_BigS(_: BigS) -> BigS {
+    loop {}
+}
+
+// CHECK: define{{.*}}void @test_TsBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr [[BIGS_ARG_ATTRS1]] byval([64 x i8]) [[BIGS_ARG_ATTRS2:.*]])
+#[no_mangle]
+pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS {
+    loop {}
+}
+
+// CHECK: define{{.*}}void @test_TuBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr [[BIGS_ARG_ATTRS1]] byval([64 x i8]) [[BIGS_ARG_ATTRS2:.*]])
+#[no_mangle]
+pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS {
+    loop {}
+}
+
+// CHECK: define{{.*}}void @test_TeBigS(ptr [[BIGS_RET_ATTRS1]] sret([64 x i8]) [[BIGS_RET_ATTRS2]], ptr [[BIGS_ARG_ATTRS1]] byval([64 x i8]) [[BIGS_ARG_ATTRS2]])
+#[no_mangle]
+pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS {
+    loop {}
+}
+
+#[repr(C)]
+pub union BigU {
+    foo: [u32; 16],
+}
+
+#[repr(transparent)]
+pub struct TsBigU(BigU);
+
+#[repr(transparent)]
+pub union TuBigU {
+    field: BigU,
+}
+
+#[repr(transparent)]
+pub enum TeBigU {
+    Variant(BigU),
+}
+
+// CHECK: define{{.*}}void @test_BigU(ptr [[BIGU_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1:.*]] byval([64 x i8]) [[BIGU_ARG_ATTRS2:.*]])
+#[no_mangle]
+pub extern "C" fn test_BigU(_: BigU) -> BigU {
+    loop {}
+}
+
+// CHECK: define{{.*}}void @test_TsBigU(ptr [[BIGU_RET_ATTRS1:.*]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1]] byval([64 x i8]) [[BIGU_ARG_ATTRS2]])
+#[no_mangle]
+pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU {
+    loop {}
+}
+
+// CHECK: define{{.*}}void @test_TuBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1]] byval([64 x i8]) [[BIGU_ARG_ATTRS2]])
+#[no_mangle]
+pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU {
+    loop {}
+}
+
+// CHECK: define{{.*}}void @test_TeBigU(ptr [[BIGU_RET_ATTRS1]] sret([64 x i8]) [[BIGU_RET_ATTRS2:.*]], ptr [[BIGU_ARG_ATTRS1]] byval([64 x i8]) [[BIGU_ARG_ATTRS2]])
+#[no_mangle]
+pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU {
+    loop {}
+}