mirror of
https://github.com/rust-lang/rust.git
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138 lines
4.3 KiB
Rust
138 lines
4.3 KiB
Rust
// 32-bit systems will return 128bit values using a return area pointer.
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//@ revisions: bit32 bit64
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//@[bit32] only-32bit
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//@[bit64] only-64bit
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//@ compile-flags: -O -C no-prepopulate-passes -Z randomize-layout=no
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#![crate_type = "lib"]
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#[repr(transparent)]
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pub struct Transparent32(u32);
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// CHECK: i32 @make_transparent(i32{{.*}} %x)
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#[no_mangle]
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pub fn make_transparent(x: u32) -> Transparent32 {
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// CHECK-NOT: alloca
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// CHECK: ret i32 %x
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let a = Transparent32(x);
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a
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}
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// CHECK: i32 @make_closure(i32{{.*}} %x)
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#[no_mangle]
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pub fn make_closure(x: i32) -> impl Fn(i32) -> i32 {
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// CHECK-NOT: alloca
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// CHECK: ret i32 %x
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move |y| x + y
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}
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#[repr(transparent)]
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pub struct TransparentPair((), (u16, u16), ());
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// CHECK: { i16, i16 } @make_transparent_pair(i16 noundef %x.0, i16 noundef %x.1)
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#[no_mangle]
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pub fn make_transparent_pair(x: (u16, u16)) -> TransparentPair {
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// CHECK-NOT: alloca
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// CHECK: %[[TEMP0:.+]] = insertvalue { i16, i16 } poison, i16 %x.0, 0
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// CHECK: %[[TEMP1:.+]] = insertvalue { i16, i16 } %[[TEMP0]], i16 %x.1, 1
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// CHECK: ret { i16, i16 } %[[TEMP1]]
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let a = TransparentPair((), x, ());
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a
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}
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// CHECK-LABEL: { i32, i32 } @make_2_tuple(i32{{.*}} %x)
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#[no_mangle]
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pub fn make_2_tuple(x: u32) -> (u32, u32) {
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// CHECK-NOT: alloca
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// CHECK: %[[TEMP0:.+]] = insertvalue { i32, i32 } poison, i32 %x, 0
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// CHECK: %[[TEMP1:.+]] = insertvalue { i32, i32 } %[[TEMP0]], i32 %x, 1
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// CHECK: ret { i32, i32 } %[[TEMP1]]
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let pair = (x, x);
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pair
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}
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// CHECK-LABEL: i8 @make_cell_of_bool(i1 noundef zeroext %b)
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#[no_mangle]
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pub fn make_cell_of_bool(b: bool) -> std::cell::Cell<bool> {
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// CHECK: %[[BYTE:.+]] = zext i1 %b to i8
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// CHECK: ret i8 %[[BYTE]]
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std::cell::Cell::new(b)
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}
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// CHECK-LABEL: { i8, i16 } @make_cell_of_bool_and_short(i1 noundef zeroext %b, i16{{.*}} %s)
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#[no_mangle]
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pub fn make_cell_of_bool_and_short(b: bool, s: u16) -> std::cell::Cell<(bool, u16)> {
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// CHECK-NOT: alloca
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// CHECK: %[[BYTE:.+]] = zext i1 %b to i8
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// CHECK: %[[TEMP0:.+]] = insertvalue { i8, i16 } poison, i8 %[[BYTE]], 0
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// CHECK: %[[TEMP1:.+]] = insertvalue { i8, i16 } %[[TEMP0]], i16 %s, 1
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// CHECK: ret { i8, i16 } %[[TEMP1]]
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std::cell::Cell::new((b, s))
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}
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// CHECK-LABEL: { i1, i1 } @make_tuple_of_bools(i1 noundef zeroext %a, i1 noundef zeroext %b)
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#[no_mangle]
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pub fn make_tuple_of_bools(a: bool, b: bool) -> (bool, bool) {
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// CHECK-NOT: alloca
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// CHECK: %[[TEMP0:.+]] = insertvalue { i1, i1 } poison, i1 %a, 0
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// CHECK: %[[TEMP1:.+]] = insertvalue { i1, i1 } %[[TEMP0]], i1 %b, 1
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// CHECK: ret { i1, i1 } %[[TEMP1]]
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(a, b)
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}
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pub struct Struct0();
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// CHECK-LABEL: void @make_struct_0()
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#[no_mangle]
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pub fn make_struct_0() -> Struct0 {
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// CHECK: ret void
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let s = Struct0();
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s
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}
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pub struct Struct1(i32);
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// CHECK-LABEL: i32 @make_struct_1(i32{{.*}} %a)
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#[no_mangle]
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pub fn make_struct_1(a: i32) -> Struct1 {
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// CHECK: ret i32 %a
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let s = Struct1(a);
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s
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}
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pub struct Struct2Asc(i16, i64);
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// bit32-LABEL: void @make_struct_2_asc({{.*}} sret({{[^,]*}}) {{.*}} %s,
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// bit64-LABEL: { i64, i16 } @make_struct_2_asc(
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// CHECK-SAME: i16{{.*}} %a, i64 noundef %b)
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#[no_mangle]
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pub fn make_struct_2_asc(a: i16, b: i64) -> Struct2Asc {
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// CHECK-NOT: alloca
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// bit32: %[[GEP:.+]] = getelementptr inbounds i8, ptr %s, i32 8
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// bit32: store i16 %a, ptr %[[GEP]]
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// bit32: store i64 %b, ptr %s
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// bit64: %[[TEMP0:.+]] = insertvalue { i64, i16 } poison, i64 %b, 0
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// bit64: %[[TEMP1:.+]] = insertvalue { i64, i16 } %[[TEMP0]], i16 %a, 1
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// bit64: ret { i64, i16 } %[[TEMP1]]
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let s = Struct2Asc(a, b);
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s
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}
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pub struct Struct2Desc(i64, i16);
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// bit32-LABEL: void @make_struct_2_desc({{.*}} sret({{[^,]*}}) {{.*}} %s,
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// bit64-LABEL: { i64, i16 } @make_struct_2_desc(
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// CHECK-SAME: i64 noundef %a, i16{{.*}} %b)
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#[no_mangle]
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pub fn make_struct_2_desc(a: i64, b: i16) -> Struct2Desc {
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// CHECK-NOT: alloca
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// bit32: store i64 %a, ptr %s
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// bit32: %[[GEP:.+]] = getelementptr inbounds i8, ptr %s, i32 8
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// bit32: store i16 %b, ptr %[[GEP]]
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// bit64: %[[TEMP0:.+]] = insertvalue { i64, i16 } poison, i64 %a, 0
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// bit64: %[[TEMP1:.+]] = insertvalue { i64, i16 } %[[TEMP0]], i16 %b, 1
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// bit64: ret { i64, i16 } %[[TEMP1]]
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let s = Struct2Desc(a, b);
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s
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}
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