1 files changed, 116 insertions, 0 deletions
diff --git a/tests/codegen-llvm/repr/transparent-imm-array.rs b/tests/codegen-llvm/repr/transparent-imm-array.rs
new file mode 100644
index 00000000000..6dad0447784
--- /dev/null
+++ b/tests/codegen-llvm/repr/transparent-imm-array.rs
@@ -0,0 +1,116 @@
+//@ add-core-stubs
+//@ revisions: arm-linux arm-android armv7-linux armv7-android mips thumb sparc
+//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes
+
+//@[arm-linux] compile-flags: --target arm-unknown-linux-gnueabi
+//@[arm-linux] needs-llvm-components: arm
+//@[arm-android] compile-flags: --target arm-linux-androideabi
+//@[arm-android] needs-llvm-components: arm
+//@[armv7-linux] compile-flags: --target armv7-unknown-linux-gnueabi
+//@[armv7-linux] needs-llvm-components: arm
+//@[armv7-android] compile-flags: --target armv7-linux-androideabi
+//@[armv7-android] needs-llvm-components: arm
+//@[mips] compile-flags: --target mips-unknown-linux-gnu
+//@[mips] needs-llvm-components: mips
+//@[thumb] compile-flags: --target thumbv7neon-linux-androideabi
+//@[thumb] needs-llvm-components: arm
+//@[sparc] compile-flags: --target sparc-unknown-linux-gnu
+//@[sparc] needs-llvm-components: sparc
+
+// 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 "immediate array" 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:.*]], [16 x i32]
+#[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]], [16 x i32]
+#[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]], [16 x i32]
+#[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]], [16 x i32]
+#[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:.*]], [16 x i32]
+#[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]], [16 x i32]
+#[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]], [16 x i32]
+#[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]], [16 x i32]
+#[no_mangle]
+pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU {
+    loop {}
+}