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| -rw-r--r-- | tests/codegen/asm-clobber_abi-avr.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tests/codegen/asm-clobber_abi-avr.rs b/tests/codegen/asm-clobber_abi-avr.rs new file mode 100644 index 00000000000..6e0c75368e2 --- /dev/null +++ b/tests/codegen/asm-clobber_abi-avr.rs @@ -0,0 +1,43 @@ +//@ assembly-output: emit-asm +//@ compile-flags: --target avr-unknown-gnu-atmega328 +//@ needs-llvm-components: avr + +#![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: @sreg_is_clobbered +// CHECK: void asm sideeffect "", "~{sreg}"() +#[no_mangle] +pub unsafe fn sreg_is_clobbered() { + asm!("", options(nostack, nomem)); +} + +// CHECK-LABEL: @sreg_is_not_clobbered_if_preserve_flags_is_used +// CHECK: void asm sideeffect "", ""() +#[no_mangle] +pub unsafe fn sreg_is_not_clobbered_if_preserve_flags_is_used() { + asm!("", options(nostack, nomem, preserves_flags)); +} + +// CHECK-LABEL: @clobber_abi +// CHECK: asm sideeffect "", "={r18},={r19},={r20},={r21},={r22},={r23},={r24},={r25},={r26},={r27},={r30},={r31},~{sreg}"() +#[no_mangle] +pub unsafe fn clobber_abi() { + asm!("", clobber_abi("C"), options(nostack, nomem)); +} + +// CHECK-LABEL: @clobber_abi_with_preserved_flags +// CHECK: asm sideeffect "", "={r18},={r19},={r20},={r21},={r22},={r23},={r24},={r25},={r26},={r27},={r30},={r31}"() +#[no_mangle] +pub unsafe fn clobber_abi_with_preserved_flags() { + asm!("", clobber_abi("C"), options(nostack, nomem, preserves_flags)); +} |