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36 lines
1.4 KiB
Rust
36 lines
1.4 KiB
Rust
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// compile-flags: --crate-type=rlib -Copt-level=0
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// revisions: force-on aarch64-apple aarch64-apple-off
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// [force-on] compile-flags: -Cforce-frame-pointers=on
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// [aarch64-apple] needs-llvm-components: aarch64
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// [aarch64-apple] compile-flags: --target=aarch64-apple-darwin
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// [aarch64-apple-off] needs-llvm-components: aarch64
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// [aarch64-apple-off] compile-flags: --target=aarch64-apple-darwin -Cforce-frame-pointers=off
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/*
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Tests that the frame pointers can be controlled by the CLI. We find aarch64-apple-darwin useful
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because of its icy-clear policy regarding frame pointers (software SHALL be compiled with them),
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e.g. https://developer.apple.com/documentation/xcode/writing-arm64-code-for-apple-platforms says:
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* The frame pointer register (x29) must always address a valid frame record. Some functions —
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such as leaf functions or tail calls — may opt not to create an entry in this list.
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As a result, stack traces are always meaningful, even without debug information.
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*/
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#![feature(no_core, lang_items)]
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#![no_core]
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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impl Copy for u32 {}
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// CHECK: define i32 @peach{{.*}}[[PEACH_ATTRS:\#[0-9]+]] {
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#[no_mangle]
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pub fn peach(x: u32) -> u32 {
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x
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}
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// CHECK: attributes [[PEACH_ATTRS]] = {
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// force-on-SAME: {{.*}}"frame-pointer"="all"
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// aarch64-apple-SAME: {{.*}}"frame-pointer"="all"
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// aarch64-apple-off-NOT: {{.*}}"frame-pointer"{{.*}}
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// CHECK-SAME: }
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