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Add -Zfixed-x18

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Signed-off-by: Alice Ryhl <aliceryhl@google.com>
This commit is contained in:
Alice Ryhl 2024-05-03 14:32:01 +02:00
parent 79734f1db8
commit 40f0172c6a
5 changed files with 62 additions and 0 deletions
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22
tests/codegen/fixed-x18.rs Normal file
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@ -0,0 +1,22 @@
// Test that the `reserve-x18` target feature is (not) emitted when
// the `-Zfixed-x18` flag is (not) set.
//@ revisions: unset set
//@ needs-llvm-components: aarch64
//@ compile-flags: --target aarch64-unknown-none
//@ [set] compile-flags: -Zfixed-x18
#![crate_type = "lib"]
#![feature(no_core, lang_items)]
#![no_core]
#[lang = "sized"]
trait Sized {}
#[no_mangle]
pub fn foo() {
// CHECK: @foo() unnamed_addr #0
// unset-NOT: attributes #0 = { {{.*}}"target-features"="{{[^"]*}}+reserve-x18{{.*}} }
// set: attributes #0 = { {{.*}}"target-features"="{{[^"]*}}+reserve-x18{{.*}} }
}