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align-byval test: add cases for <= align 4

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This commit is contained in:
Erik Desjardins 2023-05-20 16:54:12 -04:00
parent ed317e4a47
commit 209ed071ba
1 changed files with 50 additions and 2 deletions
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52
tests/codegen/align-byval.rs
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@ -29,6 +29,19 @@
impl Copy for i32 {}
impl Copy for i64 {}
#[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 should be passed on stack using `byval`
#[repr(C)]
pub struct NaturalAlign8 {
@ -37,7 +50,7 @@ pub struct NaturalAlign8 {
c: i64
}
// on i686-windows, this should be passed by reference (because the alignment is requested/forced),
// 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))]
@ -55,6 +68,36 @@ pub struct ForceAlign16 {
}
extern "C" {
// m68k: declare void @natural_align_2({{.*}}byval(%NaturalAlign2) align 2{{.*}})
// wasm: declare void @natural_align_2({{.*}}byval(%NaturalAlign2) align 2{{.*}})
// x86_64-linux: declare void @natural_align_2({{.*}}byval(%NaturalAlign2) 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(%NaturalAlign2) align 4{{.*}})
// i686-windows: declare void @natural_align_2({{.*}}byval(%NaturalAlign2) align 4{{.*}})
fn natural_align_2(a: NaturalAlign2);
// m68k: declare void @force_align_4({{.*}}byval(%ForceAlign4) align 4{{.*}})
// wasm: declare void @force_align_4({{.*}}byval(%ForceAlign4) align 4{{.*}})
// x86_64-linux: declare void @force_align_4({{.*}}byval(%ForceAlign4) 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(%ForceAlign4) align 4{{.*}})
// i686-windows: declare void @force_align_4({{.*}}byval(%ForceAlign4) align 4{{.*}})
fn force_align_4(b: ForceAlign4);
// m68k: declare void @natural_align_8({{.*}}byval(%NaturalAlign8) align 4{{.*}})
// wasm: declare void @natural_align_8({{.*}}byval(%NaturalAlign8) align 8{{.*}})
@ -105,7 +148,12 @@ pub struct ForceAlign16 {
fn force_align_16(z: ForceAlign16);
}
pub unsafe fn main(x: NaturalAlign8, y: ForceAlign8, z: ForceAlign16) {
pub unsafe fn main(
a: NaturalAlign2, b: ForceAlign4,
x: NaturalAlign8, y: ForceAlign8, z: ForceAlign16
) {
natural_align_2(a);
force_align_4(b);
natural_align_8(x);
force_align_8(y);
force_align_16(z);