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44 lines
1.3 KiB
Rust
44 lines
1.3 KiB
Rust
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//@ assembly-output: emit-asm
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//@ compile-flags: --target avr-unknown-gnu-atmega328
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//@ needs-llvm-components: avr
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#![crate_type = "rlib"]
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#![feature(no_core, rustc_attrs, lang_items, asm_experimental_arch)]
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#![no_core]
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#[lang = "sized"]
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trait Sized {}
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#[rustc_builtin_macro]
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macro_rules! asm {
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() => {};
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}
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// CHECK-LABEL: @sreg_is_clobbered
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// CHECK: void asm sideeffect "", "~{sreg}"()
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#[no_mangle]
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pub unsafe fn sreg_is_clobbered() {
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asm!("", options(nostack, nomem));
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}
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// CHECK-LABEL: @sreg_is_not_clobbered_if_preserve_flags_is_used
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// CHECK: void asm sideeffect "", ""()
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#[no_mangle]
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pub unsafe fn sreg_is_not_clobbered_if_preserve_flags_is_used() {
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asm!("", options(nostack, nomem, preserves_flags));
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}
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// CHECK-LABEL: @clobber_abi
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// CHECK: asm sideeffect "", "={r18},={r19},={r20},={r21},={r22},={r23},={r24},={r25},={r26},={r27},={r30},={r31},~{sreg}"()
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#[no_mangle]
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pub unsafe fn clobber_abi() {
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asm!("", clobber_abi("C"), options(nostack, nomem));
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}
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// CHECK-LABEL: @clobber_abi_with_preserved_flags
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// CHECK: asm sideeffect "", "={r18},={r19},={r20},={r21},={r22},={r23},={r24},={r25},={r26},={r27},={r30},={r31}"()
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#[no_mangle]
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pub unsafe fn clobber_abi_with_preserved_flags() {
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asm!("", clobber_abi("C"), options(nostack, nomem, preserves_flags));
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}
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