mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-25 08:13:41 +00:00
322 lines
9.5 KiB
Rust
322 lines
9.5 KiB
Rust
// ignore-tidy-linelength
|
|
//@ revisions:m68k x86_64-linux x86_64-windows i686-linux i686-windows
|
|
|
|
//@[m68k] compile-flags: --target m68k-unknown-linux-gnu
|
|
//@[m68k] needs-llvm-components: m68k
|
|
//@[x86_64-linux] compile-flags: --target x86_64-unknown-linux-gnu
|
|
//@[x86_64-linux] needs-llvm-components: x86
|
|
//@[x86_64-windows] compile-flags: --target x86_64-pc-windows-msvc
|
|
//@[x86_64-windows] needs-llvm-components: x86
|
|
//@[i686-linux] compile-flags: --target i686-unknown-linux-gnu
|
|
//@[i686-linux] needs-llvm-components: x86
|
|
//@[i686-windows] compile-flags: --target i686-pc-windows-msvc
|
|
//@[i686-windows] needs-llvm-components: x86
|
|
|
|
// Tests that `byval` alignment is properly specified (#80127).
|
|
// The only targets that use `byval` are m68k, x86-64, and x86.
|
|
// Note also that Windows mandates a by-ref ABI here, so it does not use byval.
|
|
|
|
#![feature(no_core, lang_items)]
|
|
#![crate_type = "lib"]
|
|
#![no_std]
|
|
#![no_core]
|
|
|
|
#[lang = "sized"]
|
|
trait Sized {}
|
|
#[lang = "freeze"]
|
|
trait Freeze {}
|
|
#[lang = "copy"]
|
|
trait Copy {}
|
|
|
|
impl Copy for i32 {}
|
|
impl Copy for i64 {}
|
|
|
|
// This struct can be represented as a pair, so it exercises the OperandValue::Pair
|
|
// codepath in `codegen_argument`.
|
|
#[repr(C)]
|
|
pub struct NaturalAlign1 {
|
|
a: i8,
|
|
b: i8,
|
|
}
|
|
|
|
// This struct cannot be represented as an immediate, so it exercises the OperandValue::Ref
|
|
// codepath in `codegen_argument`.
|
|
#[repr(C)]
|
|
pub struct NaturalAlign2 {
|
|
a: [i16; 16],
|
|
b: i16,
|
|
}
|
|
|
|
#[repr(C)]
|
|
#[repr(align(4))]
|
|
pub struct ForceAlign4 {
|
|
a: [i8; 16],
|
|
b: i8,
|
|
}
|
|
|
|
// On i686-windows, this is passed on stack using `byval`
|
|
#[repr(C)]
|
|
pub struct NaturalAlign8 {
|
|
a: i64,
|
|
b: i64,
|
|
c: i64,
|
|
}
|
|
|
|
// On i686-windows, this is passed by reference (because alignment is >4 and requested/forced),
|
|
// even though it has the exact same layout as `NaturalAlign8`!
|
|
#[repr(C)]
|
|
#[repr(align(8))]
|
|
pub struct ForceAlign8 {
|
|
a: i64,
|
|
b: i64,
|
|
c: i64,
|
|
}
|
|
|
|
// On i686-windows, this is passed on stack, because requested alignment is <=4.
|
|
#[repr(C)]
|
|
#[repr(align(4))]
|
|
pub struct LowerFA8 {
|
|
a: i64,
|
|
b: i64,
|
|
c: i64,
|
|
}
|
|
|
|
// On i686-windows, this is passed by reference, because it contains a field with
|
|
// requested/forced alignment.
|
|
#[repr(C)]
|
|
pub struct WrappedFA8 {
|
|
a: ForceAlign8,
|
|
}
|
|
|
|
// On i686-windows, this has the same ABI as ForceAlign8, i.e. passed by reference.
|
|
#[repr(transparent)]
|
|
pub struct TransparentFA8 {
|
|
_0: (),
|
|
a: ForceAlign8,
|
|
}
|
|
|
|
#[repr(C)]
|
|
#[repr(align(16))]
|
|
pub struct ForceAlign16 {
|
|
a: [i32; 16],
|
|
b: i8,
|
|
}
|
|
|
|
// CHECK-LABEL: @call_na1
|
|
#[no_mangle]
|
|
pub unsafe fn call_na1(x: NaturalAlign1) {
|
|
// CHECK: start:
|
|
|
|
// m68k: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 1
|
|
// m68k: call void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}} [[ALLOCA]])
|
|
|
|
// x86_64-linux: call void @natural_align_1(i16
|
|
|
|
// x86_64-windows: call void @natural_align_1(i16
|
|
|
|
// i686-linux: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 4
|
|
// i686-linux: call void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}} [[ALLOCA]])
|
|
|
|
// i686-windows: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 4
|
|
// i686-windows: call void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}} [[ALLOCA]])
|
|
natural_align_1(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_na2
|
|
#[no_mangle]
|
|
pub unsafe fn call_na2(x: NaturalAlign2) {
|
|
// CHECK: start:
|
|
|
|
// m68k-NEXT: call void @natural_align_2
|
|
// x86_64-linux-NEXT: call void @natural_align_2
|
|
// x86_64-windows-NEXT: call void @natural_align_2
|
|
|
|
// i686-linux: [[ALLOCA:%[0-9]+]] = alloca [34 x i8], align 4
|
|
// i686-linux: call void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}} [[ALLOCA]])
|
|
|
|
// i686-windows: [[ALLOCA:%[0-9]+]] = alloca [34 x i8], align 4
|
|
// i686-windows: call void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}} [[ALLOCA]])
|
|
natural_align_2(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_fa4
|
|
#[no_mangle]
|
|
pub unsafe fn call_fa4(x: ForceAlign4) {
|
|
// CHECK: start:
|
|
// CHECK-NEXT: call void @force_align_4
|
|
force_align_4(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_na8
|
|
#[no_mangle]
|
|
pub unsafe fn call_na8(x: NaturalAlign8) {
|
|
// CHECK: start:
|
|
// CHECK-NEXT: call void @natural_align_8
|
|
natural_align_8(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_fa8
|
|
#[no_mangle]
|
|
pub unsafe fn call_fa8(x: ForceAlign8) {
|
|
// CHECK: start:
|
|
// CHECK-NEXT: call void @force_align_8
|
|
force_align_8(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_lfa8
|
|
#[no_mangle]
|
|
pub unsafe fn call_lfa8(x: LowerFA8) {
|
|
// CHECK: start:
|
|
// CHECK-NEXT: call void @lower_fa8
|
|
lower_fa8(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_wfa8
|
|
#[no_mangle]
|
|
pub unsafe fn call_wfa8(x: WrappedFA8) {
|
|
// CHECK: start:
|
|
// CHECK-NEXT: call void @wrapped_fa8
|
|
wrapped_fa8(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_tfa8
|
|
#[no_mangle]
|
|
pub unsafe fn call_tfa8(x: TransparentFA8) {
|
|
// CHECK: start:
|
|
// CHECK-NEXT: call void @transparent_fa8
|
|
transparent_fa8(x);
|
|
}
|
|
|
|
// CHECK-LABEL: @call_fa16
|
|
#[no_mangle]
|
|
pub unsafe fn call_fa16(x: ForceAlign16) {
|
|
// CHECK: start:
|
|
// CHECK-NEXT: call void @force_align_16
|
|
force_align_16(x);
|
|
}
|
|
|
|
extern "C" {
|
|
// m68k: declare void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}})
|
|
|
|
// x86_64-linux: declare void @natural_align_1(i16)
|
|
|
|
// x86_64-windows: declare void @natural_align_1(i16)
|
|
|
|
// i686-linux: declare void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}})
|
|
fn natural_align_1(x: NaturalAlign1);
|
|
|
|
// m68k: declare void @natural_align_2({{.*}}byval([34 x i8]) align 2{{.*}})
|
|
|
|
// x86_64-linux: declare void @natural_align_2({{.*}}byval([34 x i8]) align 2{{.*}})
|
|
|
|
// x86_64-windows: declare void @natural_align_2(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 2{{.*}})
|
|
|
|
// i686-linux: declare void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}})
|
|
fn natural_align_2(x: NaturalAlign2);
|
|
|
|
// m68k: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
|
|
|
|
// x86_64-linux: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
|
|
|
|
// x86_64-windows: declare void @force_align_4(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 4{{.*}})
|
|
|
|
// i686-linux: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
|
|
fn force_align_4(x: ForceAlign4);
|
|
|
|
// m68k: declare void @natural_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
|
|
// x86_64-linux: declare void @natural_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-windows: declare void @natural_align_8(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 8{{.*}})
|
|
|
|
// i686-linux: declare void @natural_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @natural_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
fn natural_align_8(x: NaturalAlign8);
|
|
|
|
// m68k: declare void @force_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-linux: declare void @force_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-windows: declare void @force_align_8(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 8{{.*}})
|
|
|
|
// i686-linux: declare void @force_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @force_align_8(
|
|
// i686-windows-NOT: byval
|
|
// i686-windows-SAME: align 8{{.*}})
|
|
fn force_align_8(x: ForceAlign8);
|
|
|
|
// m68k: declare void @lower_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
|
|
// x86_64-linux: declare void @lower_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-windows: declare void @lower_fa8(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 8{{.*}})
|
|
|
|
// i686-linux: declare void @lower_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @lower_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
fn lower_fa8(x: LowerFA8);
|
|
|
|
// m68k: declare void @wrapped_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-linux: declare void @wrapped_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-windows: declare void @wrapped_fa8(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 8{{.*}})
|
|
|
|
// i686-linux: declare void @wrapped_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @wrapped_fa8(
|
|
// i686-windows-NOT: byval
|
|
// i686-windows-SAME: align 8{{.*}})
|
|
fn wrapped_fa8(x: WrappedFA8);
|
|
|
|
// m68k: declare void @transparent_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-linux: declare void @transparent_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
|
|
|
|
// x86_64-windows: declare void @transparent_fa8(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 8{{.*}})
|
|
|
|
// i686-linux: declare void @transparent_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @transparent_fa8(
|
|
// i686-windows-NOT: byval
|
|
// i686-windows-SAME: align 8{{.*}})
|
|
fn transparent_fa8(x: TransparentFA8);
|
|
|
|
// m68k: declare void @force_align_16({{.*}}byval([80 x i8]) align 16{{.*}})
|
|
|
|
// x86_64-linux: declare void @force_align_16({{.*}}byval([80 x i8]) align 16{{.*}})
|
|
|
|
// x86_64-windows: declare void @force_align_16(
|
|
// x86_64-windows-NOT: byval
|
|
// x86_64-windows-SAME: align 16{{.*}})
|
|
|
|
// i686-linux: declare void @force_align_16({{.*}}byval([80 x i8]) align 4{{.*}})
|
|
|
|
// i686-windows: declare void @force_align_16(
|
|
// i686-windows-NOT: byval
|
|
// i686-windows-SAME: align 16{{.*}})
|
|
fn force_align_16(x: ForceAlign16);
|
|
}
|