mirror of
https://github.com/rust-lang/rust.git
synced 2025-11-03 22:49:17 +00:00
72800d3b89
Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
154 lines
4.2 KiB
Rust
154 lines
4.2 KiB
Rust
//
|
|
//@ compile-flags: -O -C no-prepopulate-passes
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
#[repr(packed)]
|
|
pub struct Packed1 {
|
|
dealign: u8,
|
|
data: u32,
|
|
}
|
|
|
|
#[repr(packed(2))]
|
|
pub struct Packed2 {
|
|
dealign: u8,
|
|
data: u32,
|
|
}
|
|
|
|
// CHECK-LABEL: @write_pkd1
|
|
#[no_mangle]
|
|
pub fn write_pkd1(pkd: &mut Packed1) -> u32 {
|
|
// CHECK: %{{.*}} = load i32, ptr %{{.*}}, align 1
|
|
// CHECK: store i32 42, ptr %{{.*}}, align 1
|
|
let result = pkd.data;
|
|
pkd.data = 42;
|
|
result
|
|
}
|
|
|
|
// CHECK-LABEL: @write_pkd2
|
|
#[no_mangle]
|
|
pub fn write_pkd2(pkd: &mut Packed2) -> u32 {
|
|
// CHECK: %{{.*}} = load i32, ptr %{{.*}}, align 2
|
|
// CHECK: store i32 42, ptr %{{.*}}, align 2
|
|
let result = pkd.data;
|
|
pkd.data = 42;
|
|
result
|
|
}
|
|
|
|
pub struct Array([i32; 8]);
|
|
#[repr(packed)]
|
|
pub struct BigPacked1 {
|
|
dealign: u8,
|
|
data: Array,
|
|
}
|
|
|
|
#[repr(packed(2))]
|
|
pub struct BigPacked2 {
|
|
dealign: u8,
|
|
data: Array,
|
|
}
|
|
|
|
// CHECK-LABEL: @call_pkd1
|
|
#[no_mangle]
|
|
pub fn call_pkd1(f: fn() -> Array) -> BigPacked1 {
|
|
// CHECK: [[ALLOCA:%[_a-z0-9]+]] = alloca [32 x i8]
|
|
// CHECK: call void %{{.*}}(ptr noalias nocapture noundef sret{{.*}} dereferenceable(32) [[ALLOCA]])
|
|
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 1 %{{.*}}, ptr align 4 %{{.*}}, i{{[0-9]+}} 32, i1 false)
|
|
// check that calls whose destination is a field of a packed struct
|
|
// go through an alloca rather than calling the function with an
|
|
// unaligned destination.
|
|
BigPacked1 { dealign: 0, data: f() }
|
|
}
|
|
|
|
// CHECK-LABEL: @call_pkd2
|
|
#[no_mangle]
|
|
pub fn call_pkd2(f: fn() -> Array) -> BigPacked2 {
|
|
// CHECK: [[ALLOCA:%[_a-z0-9]+]] = alloca [32 x i8]
|
|
// CHECK: call void %{{.*}}(ptr noalias nocapture noundef sret{{.*}} dereferenceable(32) [[ALLOCA]])
|
|
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 2 %{{.*}}, ptr align 4 %{{.*}}, i{{[0-9]+}} 32, i1 false)
|
|
// check that calls whose destination is a field of a packed struct
|
|
// go through an alloca rather than calling the function with an
|
|
// unaligned destination.
|
|
BigPacked2 { dealign: 0, data: f() }
|
|
}
|
|
|
|
// CHECK-LABEL: @write_packed_array1
|
|
// CHECK: store i32 0, ptr %{{.+}}, align 1
|
|
// CHECK: store i32 1, ptr %{{.+}}, align 1
|
|
// CHECK: store i32 2, ptr %{{.+}}, align 1
|
|
#[no_mangle]
|
|
pub fn write_packed_array1(p: &mut BigPacked1) {
|
|
p.data.0[0] = 0;
|
|
p.data.0[1] = 1;
|
|
p.data.0[2] = 2;
|
|
}
|
|
|
|
// CHECK-LABEL: @write_packed_array2
|
|
// CHECK: store i32 0, ptr %{{.+}}, align 2
|
|
// CHECK: store i32 1, ptr %{{.+}}, align 2
|
|
// CHECK: store i32 2, ptr %{{.+}}, align 2
|
|
#[no_mangle]
|
|
pub fn write_packed_array2(p: &mut BigPacked2) {
|
|
p.data.0[0] = 0;
|
|
p.data.0[1] = 1;
|
|
p.data.0[2] = 2;
|
|
}
|
|
|
|
// CHECK-LABEL: @repeat_packed_array1
|
|
// CHECK: store i32 42, ptr %{{.+}}, align 1
|
|
#[no_mangle]
|
|
pub fn repeat_packed_array1(p: &mut BigPacked1) {
|
|
p.data.0 = [42; 8];
|
|
}
|
|
|
|
// CHECK-LABEL: @repeat_packed_array2
|
|
// CHECK: store i32 42, ptr %{{.+}}, align 2
|
|
#[no_mangle]
|
|
pub fn repeat_packed_array2(p: &mut BigPacked2) {
|
|
p.data.0 = [42; 8];
|
|
}
|
|
|
|
#[repr(packed)]
|
|
#[derive(Copy, Clone)]
|
|
pub struct Packed1Pair(u8, u32);
|
|
|
|
#[repr(packed(2))]
|
|
#[derive(Copy, Clone)]
|
|
pub struct Packed2Pair(u8, u32);
|
|
|
|
// CHECK-LABEL: @pkd1_pair
|
|
#[no_mangle]
|
|
pub fn pkd1_pair(pair1: &mut Packed1Pair, pair2: &mut Packed1Pair) {
|
|
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 1 %{{.*}}, ptr align 1 %{{.*}}, i{{[0-9]+}} 5, i1 false)
|
|
*pair2 = *pair1;
|
|
}
|
|
|
|
// CHECK-LABEL: @pkd2_pair
|
|
#[no_mangle]
|
|
pub fn pkd2_pair(pair1: &mut Packed2Pair, pair2: &mut Packed2Pair) {
|
|
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 2 %{{.*}}, ptr align 2 %{{.*}}, i{{[0-9]+}} 6, i1 false)
|
|
*pair2 = *pair1;
|
|
}
|
|
|
|
#[repr(packed)]
|
|
#[derive(Copy, Clone)]
|
|
pub struct Packed1NestedPair((u32, u32));
|
|
|
|
#[repr(packed(2))]
|
|
#[derive(Copy, Clone)]
|
|
pub struct Packed2NestedPair((u32, u32));
|
|
|
|
// CHECK-LABEL: @pkd1_nested_pair
|
|
#[no_mangle]
|
|
pub fn pkd1_nested_pair(pair1: &mut Packed1NestedPair, pair2: &mut Packed1NestedPair) {
|
|
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 1 %{{.*}}, ptr align 1 %{{.*}}, i{{[0-9]+}} 8, i1 false)
|
|
*pair2 = *pair1;
|
|
}
|
|
|
|
// CHECK-LABEL: @pkd2_nested_pair
|
|
#[no_mangle]
|
|
pub fn pkd2_nested_pair(pair1: &mut Packed2NestedPair, pair2: &mut Packed2NestedPair) {
|
|
// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 2 %{{.*}}, ptr align 2 %{{.*}}, i{{[0-9]+}} 8, i1 false)
|
|
*pair2 = *pair1;
|
|
}
|