mirror of https://github.com/rust-lang/rust
343 lines
10 KiB
Rust
343 lines
10 KiB
Rust
// ignore-tidy-linelength
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//@ revisions:m68k wasm x86_64-linux x86_64-windows i686-linux i686-windows
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//@[m68k] compile-flags: --target m68k-unknown-linux-gnu
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//@[m68k] needs-llvm-components: m68k
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//@[wasm] compile-flags: --target wasm32-unknown-emscripten
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//@[wasm] needs-llvm-components: webassembly
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//@[x86_64-linux] compile-flags: --target x86_64-unknown-linux-gnu
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//@[x86_64-linux] needs-llvm-components: x86
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//@[x86_64-windows] compile-flags: --target x86_64-pc-windows-msvc
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//@[x86_64-windows] needs-llvm-components: x86
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//@[i686-linux] compile-flags: --target i686-unknown-linux-gnu
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//@[i686-linux] needs-llvm-components: x86
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//@[i686-windows] compile-flags: --target i686-pc-windows-msvc
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//@[i686-windows] needs-llvm-components: x86
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// Tests that `byval` alignment is properly specified (#80127).
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// The only targets that use `byval` are m68k, wasm, x86-64, and x86.
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// Note also that Windows mandates a by-ref ABI here, so it does not use byval.
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#![feature(no_core, lang_items)]
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#![crate_type = "lib"]
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#![no_std]
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#![no_core]
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#[lang="sized"] trait Sized { }
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#[lang="freeze"] trait Freeze { }
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#[lang="copy"] trait Copy { }
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impl Copy for i32 {}
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impl Copy for i64 {}
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// This struct can be represented as a pair, so it exercises the OperandValue::Pair
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// codepath in `codegen_argument`.
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#[repr(C)]
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pub struct NaturalAlign1 {
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a: i8,
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b: i8,
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}
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// This struct cannot be represented as an immediate, so it exercises the OperandValue::Ref
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// codepath in `codegen_argument`.
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#[repr(C)]
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pub struct NaturalAlign2 {
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a: [i16; 16],
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b: i16,
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}
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#[repr(C)]
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#[repr(align(4))]
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pub struct ForceAlign4 {
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a: [i8; 16],
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b: i8,
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}
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// On i686-windows, this is passed on stack using `byval`
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#[repr(C)]
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pub struct NaturalAlign8 {
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a: i64,
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b: i64,
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c: i64
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}
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// On i686-windows, this is passed by reference (because alignment is >4 and requested/forced),
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// even though it has the exact same layout as `NaturalAlign8`!
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#[repr(C)]
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#[repr(align(8))]
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pub struct ForceAlign8 {
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a: i64,
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b: i64,
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c: i64
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}
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// On i686-windows, this is passed on stack, because requested alignment is <=4.
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#[repr(C)]
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#[repr(align(4))]
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pub struct LowerFA8 {
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a: i64,
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b: i64,
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c: i64
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}
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// On i686-windows, this is passed by reference, because it contains a field with
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// requested/forced alignment.
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#[repr(C)]
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pub struct WrappedFA8 {
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a: ForceAlign8
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}
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// On i686-windows, this has the same ABI as ForceAlign8, i.e. passed by reference.
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#[repr(transparent)]
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pub struct TransparentFA8 {
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_0: (),
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a: ForceAlign8
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}
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#[repr(C)]
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#[repr(align(16))]
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pub struct ForceAlign16 {
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a: [i32; 16],
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b: i8
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}
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// CHECK-LABEL: @call_na1
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#[no_mangle]
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pub unsafe fn call_na1(x: NaturalAlign1) {
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// CHECK: start:
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// m68k: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 1
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// m68k: call void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}} [[ALLOCA]])
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// wasm: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 1
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// wasm: call void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}} [[ALLOCA]])
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// x86_64-linux: call void @natural_align_1(i16
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// x86_64-windows: call void @natural_align_1(i16
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// i686-linux: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 4
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// i686-linux: call void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}} [[ALLOCA]])
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// i686-windows: [[ALLOCA:%[a-z0-9+]]] = alloca [2 x i8], align 4
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// i686-windows: call void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}} [[ALLOCA]])
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natural_align_1(x);
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}
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// CHECK-LABEL: @call_na2
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#[no_mangle]
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pub unsafe fn call_na2(x: NaturalAlign2) {
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// CHECK: start:
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// m68k-NEXT: call void @natural_align_2
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// wasm-NEXT: call void @natural_align_2
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// x86_64-linux-NEXT: call void @natural_align_2
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// x86_64-windows-NEXT: call void @natural_align_2
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// i686-linux: [[ALLOCA:%[0-9]+]] = alloca [34 x i8], align 4
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// i686-linux: call void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}} [[ALLOCA]])
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// i686-windows: [[ALLOCA:%[0-9]+]] = alloca [34 x i8], align 4
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// i686-windows: call void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}} [[ALLOCA]])
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natural_align_2(x);
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}
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// CHECK-LABEL: @call_fa4
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#[no_mangle]
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pub unsafe fn call_fa4(x: ForceAlign4) {
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// CHECK: start:
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// CHECK-NEXT: call void @force_align_4
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force_align_4(x);
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}
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// CHECK-LABEL: @call_na8
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#[no_mangle]
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pub unsafe fn call_na8(x: NaturalAlign8) {
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// CHECK: start:
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// CHECK-NEXT: call void @natural_align_8
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natural_align_8(x);
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}
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// CHECK-LABEL: @call_fa8
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#[no_mangle]
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pub unsafe fn call_fa8(x: ForceAlign8) {
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// CHECK: start:
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// CHECK-NEXT: call void @force_align_8
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force_align_8(x);
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}
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// CHECK-LABEL: @call_lfa8
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#[no_mangle]
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pub unsafe fn call_lfa8(x: LowerFA8) {
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// CHECK: start:
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// CHECK-NEXT: call void @lower_fa8
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lower_fa8(x);
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}
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// CHECK-LABEL: @call_wfa8
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#[no_mangle]
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pub unsafe fn call_wfa8(x: WrappedFA8) {
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// CHECK: start:
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// CHECK-NEXT: call void @wrapped_fa8
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wrapped_fa8(x);
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}
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// CHECK-LABEL: @call_tfa8
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#[no_mangle]
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pub unsafe fn call_tfa8(x: TransparentFA8) {
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// CHECK: start:
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// CHECK-NEXT: call void @transparent_fa8
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transparent_fa8(x);
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}
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// CHECK-LABEL: @call_fa16
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#[no_mangle]
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pub unsafe fn call_fa16(x: ForceAlign16) {
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// CHECK: start:
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// CHECK-NEXT: call void @force_align_16
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force_align_16(x);
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}
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extern "C" {
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// m68k: declare void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}})
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// wasm: declare void @natural_align_1({{.*}}byval([2 x i8]) align 1{{.*}})
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// x86_64-linux: declare void @natural_align_1(i16)
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// x86_64-windows: declare void @natural_align_1(i16)
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// i686-linux: declare void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}})
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// i686-windows: declare void @natural_align_1({{.*}}byval([2 x i8]) align 4{{.*}})
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fn natural_align_1(x: NaturalAlign1);
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// m68k: declare void @natural_align_2({{.*}}byval([34 x i8]) align 2{{.*}})
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// wasm: declare void @natural_align_2({{.*}}byval([34 x i8]) align 2{{.*}})
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// x86_64-linux: declare void @natural_align_2({{.*}}byval([34 x i8]) align 2{{.*}})
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// x86_64-windows: declare void @natural_align_2(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 2{{.*}})
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// i686-linux: declare void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}})
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// i686-windows: declare void @natural_align_2({{.*}}byval([34 x i8]) align 4{{.*}})
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fn natural_align_2(x: NaturalAlign2);
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// m68k: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
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// wasm: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
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// x86_64-linux: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
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// x86_64-windows: declare void @force_align_4(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 4{{.*}})
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// i686-linux: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
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// i686-windows: declare void @force_align_4({{.*}}byval([20 x i8]) align 4{{.*}})
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fn force_align_4(x: ForceAlign4);
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// m68k: declare void @natural_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
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// wasm: declare void @natural_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-linux: declare void @natural_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-windows: declare void @natural_align_8(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 8{{.*}})
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// i686-linux: declare void @natural_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
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// i686-windows: declare void @natural_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
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fn natural_align_8(x: NaturalAlign8);
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// m68k: declare void @force_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
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// wasm: declare void @force_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-linux: declare void @force_align_8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-windows: declare void @force_align_8(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 8{{.*}})
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// i686-linux: declare void @force_align_8({{.*}}byval([24 x i8]) align 4{{.*}})
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// i686-windows: declare void @force_align_8(
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// i686-windows-NOT: byval
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// i686-windows-SAME: align 8{{.*}})
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fn force_align_8(x: ForceAlign8);
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// m68k: declare void @lower_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
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// wasm: declare void @lower_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-linux: declare void @lower_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-windows: declare void @lower_fa8(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 8{{.*}})
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// i686-linux: declare void @lower_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
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// i686-windows: declare void @lower_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
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fn lower_fa8(x: LowerFA8);
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// m68k: declare void @wrapped_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// wasm: declare void @wrapped_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-linux: declare void @wrapped_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-windows: declare void @wrapped_fa8(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 8{{.*}})
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// i686-linux: declare void @wrapped_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
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// i686-windows: declare void @wrapped_fa8(
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// i686-windows-NOT: byval
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// i686-windows-SAME: align 8{{.*}})
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fn wrapped_fa8(x: WrappedFA8);
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// m68k: declare void @transparent_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// wasm: declare void @transparent_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-linux: declare void @transparent_fa8({{.*}}byval([24 x i8]) align 8{{.*}})
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// x86_64-windows: declare void @transparent_fa8(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 8{{.*}})
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// i686-linux: declare void @transparent_fa8({{.*}}byval([24 x i8]) align 4{{.*}})
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// i686-windows: declare void @transparent_fa8(
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// i686-windows-NOT: byval
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// i686-windows-SAME: align 8{{.*}})
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fn transparent_fa8(x: TransparentFA8);
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// m68k: declare void @force_align_16({{.*}}byval([80 x i8]) align 16{{.*}})
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// wasm: declare void @force_align_16({{.*}}byval([80 x i8]) align 16{{.*}})
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// x86_64-linux: declare void @force_align_16({{.*}}byval([80 x i8]) align 16{{.*}})
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// x86_64-windows: declare void @force_align_16(
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// x86_64-windows-NOT: byval
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// x86_64-windows-SAME: align 16{{.*}})
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// i686-linux: declare void @force_align_16({{.*}}byval([80 x i8]) align 4{{.*}})
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// i686-windows: declare void @force_align_16(
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// i686-windows-NOT: byval
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// i686-windows-SAME: align 16{{.*}})
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fn force_align_16(x: ForceAlign16);
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}
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