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//@ compile-flags: -Z merge-functions=disabled
//@ revisions: windows-gnu
//@[windows-gnu] compile-flags: --target x86_64-pc-windows-gnu
//@[windows-gnu] needs-llvm-components: x86
//@ revisions: windows-msvc
//@[windows-msvc] compile-flags: --target x86_64-pc-windows-msvc
//@[windows-msvc] needs-llvm-components: x86
// Also test what happens when using a Windows ABI on Linux.
//@ revisions: linux
//@[linux] compile-flags: --target x86_64-unknown-linux-gnu
//@[linux] needs-llvm-components: x86
#![feature(no_core, lang_items, rustc_attrs, abi_vectorcall)]
#![no_core]
#![crate_type = "lib"]
#[lang = "sized"]
trait Sized {}
// Make sure the argument is always passed when explicitly requesting a Windows ABI.
// Our goal here is to match clang: <https://clang.godbolt.org/z/Wr4jMWq3P>.
// CHECK: define win64cc void @pass_zst_win64(ptr {{[^,]*}})
#[no_mangle]
extern "win64" fn pass_zst_win64(_: ()) {}
// CHECK: define x86_vectorcallcc void @pass_zst_vectorcall(ptr {{[^,]*}})
#[no_mangle]
extern "vectorcall" fn pass_zst_vectorcall(_: ()) {}
// windows-gnu: define void @pass_zst_fastcall(ptr {{[^,]*}})
// windows-msvc: define void @pass_zst_fastcall(ptr {{[^,]*}})
#[no_mangle]
#[cfg(windows)] // "fastcall" is not valid on 64bit Linux
extern "fastcall" fn pass_zst_fastcall(_: ()) {}
// The sysv64 ABI ignores ZST.
// CHECK: define x86_64_sysvcc void @pass_zst_sysv64()
#[no_mangle]
extern "sysv64" fn pass_zst_sysv64(_: ()) {}
// For `extern "C"` functions, ZST are ignored on Linux put passed on Windows.
// linux: define void @pass_zst_c()
// windows-msvc: define void @pass_zst_c(ptr {{[^,]*}})
// windows-gnu: define void @pass_zst_c(ptr {{[^,]*}})
#[no_mangle]
extern "C" fn pass_zst_c(_: ()) {}
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