mirror of
https://github.com/rust-lang/rust.git
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87 lines
2.3 KiB
Rust
87 lines
2.3 KiB
Rust
//@ revisions: arm mips thumb wasm32
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//@ compile-flags: -C no-prepopulate-passes
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//
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//@[arm] only-arm
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//@[mips] only-mips
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//@[thumb] only-thumb
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//@[wasm32] only-wasm32
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//@ ignore-emscripten
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// See ./transparent.rs
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// Some platforms pass large aggregates using immediate arrays in LLVMIR
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// Other platforms pass large aggregates using struct pointer in LLVMIR
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// This covers the "immediate array" case.
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#![feature(transparent_unions)]
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#![crate_type="lib"]
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#[derive(Clone, Copy)]
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#[repr(C)]
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pub struct BigS([u32; 16]);
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#[repr(transparent)]
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pub struct TsBigS(BigS);
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#[repr(transparent)]
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pub union TuBigS {
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field: BigS,
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}
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#[repr(transparent)]
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pub enum TeBigS {
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Variant(BigS),
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}
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// CHECK: define void @test_BigS(ptr [[BIGS_RET_ATTRS1:.*]] sret(%BigS) [[BIGS_RET_ATTRS2:.*]], [16 x i32]
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#[no_mangle]
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pub extern fn test_BigS(_: BigS) -> BigS { loop {} }
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// CHECK: define void @test_TsBigS(ptr [[BIGS_RET_ATTRS1]] sret(%TsBigS) [[BIGS_RET_ATTRS2]], [16 x i32]
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#[no_mangle]
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pub extern fn test_TsBigS(_: TsBigS) -> TsBigS { loop {} }
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// CHECK: define void @test_TuBigS(ptr [[BIGS_RET_ATTRS1]] sret(%TuBigS) [[BIGS_RET_ATTRS2]], [16 x i32]
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#[no_mangle]
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pub extern fn test_TuBigS(_: TuBigS) -> TuBigS { loop {} }
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// CHECK: define void @test_TeBigS(ptr [[BIGS_RET_ATTRS1]] sret(%"TeBigS::Variant") [[BIGS_RET_ATTRS2]], [16 x i32]
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#[no_mangle]
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pub extern fn test_TeBigS(_: TeBigS) -> TeBigS { loop {} }
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#[derive(Clone, Copy)]
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#[repr(C)]
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pub union BigU {
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foo: [u32; 16],
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}
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#[repr(transparent)]
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pub struct TsBigU(BigU);
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#[repr(transparent)]
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pub union TuBigU {
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field: BigU,
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}
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#[repr(transparent)]
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pub enum TeBigU {
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Variant(BigU),
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}
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// CHECK: define void @test_BigU(ptr [[BIGU_RET_ATTRS1:.*]] sret(%BigU) [[BIGU_RET_ATTRS2:.*]], [16 x i32]
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#[no_mangle]
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pub extern fn test_BigU(_: BigU) -> BigU { loop {} }
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// CHECK: define void @test_TsBigU(ptr [[BIGU_RET_ATTRS1]] sret(%TsBigU) [[BIGU_RET_ATTRS2]], [16 x i32]
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#[no_mangle]
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pub extern fn test_TsBigU(_: TsBigU) -> TsBigU { loop {} }
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// CHECK: define void @test_TuBigU(ptr [[BIGU_RET_ATTRS1]] sret(%TuBigU) [[BIGU_RET_ATTRS2]], [16 x i32]
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#[no_mangle]
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pub extern fn test_TuBigU(_: TuBigU) -> TuBigU { loop {} }
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// CHECK: define void @test_TeBigU(ptr [[BIGU_RET_ATTRS1]] sret(%"TeBigU::Variant") [[BIGU_RET_ATTRS2]], [16 x i32]
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#[no_mangle]
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pub extern fn test_TeBigU(_: TeBigU) -> TeBigU { loop {} }
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