rust/tests/codegen/asm/sparc-clobbers.rs

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//@ revisions: sparc sparcv8plus sparc64
//@[sparc] compile-flags: --target sparc-unknown-none-elf
//@[sparc] needs-llvm-components: sparc
//@[sparcv8plus] compile-flags: --target sparc-unknown-linux-gnu
//@[sparcv8plus] needs-llvm-components: sparc
//@[sparc64] compile-flags: --target sparc64-unknown-linux-gnu
//@[sparc64] needs-llvm-components: sparc
#![crate_type = "rlib"]
#![feature(no_core, rustc_attrs, lang_items, asm_experimental_arch)]
#![no_core]
#[lang = "sized"]
trait Sized {}
#[rustc_builtin_macro]
macro_rules! asm {
() => {};
}
// CHECK-LABEL: @cc_clobber
// CHECK: call void asm sideeffect "", "~{icc},~{fcc0},~{fcc1},~{fcc2},~{fcc3}"()
#[no_mangle]
pub unsafe fn cc_clobber() {
asm!("", options(nostack, nomem));
}
// CHECK-LABEL: @no_clobber
// CHECK: call void asm sideeffect "", ""()
#[no_mangle]
pub unsafe fn no_clobber() {
asm!("", options(nostack, nomem, preserves_flags));
}
// CHECK-LABEL: @y_clobber
// CHECK: call void asm sideeffect "", "~{y}"()
#[no_mangle]
pub unsafe fn y_clobber() {
asm!("", out("y") _, options(nostack, nomem, preserves_flags));
}