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rust/tests/codegen/frame-pointer.rs

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Add more codegen tests
2022-12-30 20:11:30 +00:00
//@ compile-flags: --crate-type=rlib -Copt-level=0
Add support for leaf fn frame pointer elimination This PR adds ability for the target specifications to specify frame pointer emission type that's not just “always” or “whatever cg decides”. In particular there's a new mode that allows omission of the frame pointer for leaf functions (those that don't call any other functions). We then set this new mode for Aarch64-based Apple targets. Fixes #86196
2021-06-26 20:53:35 +00:00
//@ revisions: aarch64-apple aarch64-linux force x64-apple x64-linux
//@ [aarch64-apple] needs-llvm-components: aarch64
//@ [aarch64-apple] compile-flags: --target=aarch64-apple-darwin
//@ [aarch64-linux] needs-llvm-components: aarch64
//@ [aarch64-linux] compile-flags: --target=aarch64-unknown-linux-gnu
//@ [force] needs-llvm-components: x86
//@ [force] compile-flags: --target=x86_64-unknown-linux-gnu -Cforce-frame-pointers=yes
//@ [x64-apple] needs-llvm-components: x86
//@ [x64-apple] compile-flags: --target=x86_64-apple-darwin
//@ [x64-linux] needs-llvm-components: x86
//@ [x64-linux] compile-flags: --target=x86_64-unknown-linux-gnu
#![feature(no_core, lang_items)]
#![no_core]
#[lang="sized"]
trait Sized { }
#[lang="copy"]
trait Copy { }
short-circuit the easy cases in `is_copy_modulo_regions` This change is somewhat extensive, since it affects MIR -- since this is called to determine Copy vs Move -- so any test that's `no_core` needs to actually have the normal `impl`s it uses.
2022-03-06 07:51:10 +00:00
impl Copy for u32 {}
Add support for leaf fn frame pointer elimination This PR adds ability for the target specifications to specify frame pointer emission type that's not just “always” or “whatever cg decides”. In particular there's a new mode that allows omission of the frame pointer for leaf functions (those that don't call any other functions). We then set this new mode for Aarch64-based Apple targets. Fixes #86196
2021-06-26 20:53:35 +00:00
Add more codegen tests
2022-12-30 20:11:30 +00:00
// CHECK: define i32 @peach{{.*}}[[PEACH_ATTRS:\#[0-9]+]] {
Add support for leaf fn frame pointer elimination This PR adds ability for the target specifications to specify frame pointer emission type that's not just “always” or “whatever cg decides”. In particular there's a new mode that allows omission of the frame pointer for leaf functions (those that don't call any other functions). We then set this new mode for Aarch64-based Apple targets. Fixes #86196
2021-06-26 20:53:35 +00:00
#[no_mangle]
pub fn peach(x: u32) -> u32 {
x
}
// CHECK: attributes [[PEACH_ATTRS]] = {
// x64-linux-NOT: {{.*}}"frame-pointer"{{.*}}
// aarch64-linux-NOT: {{.*}}"frame-pointer"{{.*}}
// x64-apple-SAME: {{.*}}"frame-pointer"="all"
// force-SAME: {{.*}}"frame-pointer"="all"
// aarch64-apple-SAME: {{.*}}"frame-pointer"="non-leaf"
// CHECK-SAME: }
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