forked from rust-lang/rust
-
Notifications
You must be signed in to change notification settings - Fork 7
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Auto merge of rust-lang#99409 - tmiasko:atomic-tests, r=m-ou-se
Test codegen of atomic compare-exchange with additional memory orderings * Add a test for atomic operations introduced in rust-lang#97423 & rust-lang#98383. * Add a test for fallback code generation strategy used on LLVM 12 introduced in rust-lang#98385. Use a separate test case instead of a revision system since test will be gone once LLVM 12 is no longer supported.
- Loading branch information
Showing
2 changed files
with
109 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| // Code generation of atomic operations for LLVM 12 | ||
| // ignore-llvm-version: 13 - 99 | ||
| // compile-flags: -O | ||
| #![crate_type = "lib"] | ||
|
|
||
| use std::sync::atomic::{AtomicI32, Ordering::*}; | ||
|
|
||
| // CHECK-LABEL: @compare_exchange | ||
| #[no_mangle] | ||
| pub fn compare_exchange(a: &AtomicI32) { | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 10 monotonic monotonic | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 11 acquire acquire | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 12 seq_cst seq_cst | ||
| let _ = a.compare_exchange(0, 10, Relaxed, Relaxed); | ||
| let _ = a.compare_exchange(0, 11, Relaxed, Acquire); | ||
| let _ = a.compare_exchange(0, 12, Relaxed, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 20 release monotonic | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 21 acq_rel acquire | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 22 seq_cst seq_cst | ||
| let _ = a.compare_exchange(0, 20, Release, Relaxed); | ||
| let _ = a.compare_exchange(0, 21, Release, Acquire); | ||
| let _ = a.compare_exchange(0, 22, Release, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 30 acquire monotonic | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 31 acquire acquire | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 32 seq_cst seq_cst | ||
| let _ = a.compare_exchange(0, 30, Acquire, Relaxed); | ||
| let _ = a.compare_exchange(0, 31, Acquire, Acquire); | ||
| let _ = a.compare_exchange(0, 32, Acquire, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 40 acq_rel monotonic | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 41 acq_rel acquire | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 42 seq_cst seq_cst | ||
| let _ = a.compare_exchange(0, 40, AcqRel, Relaxed); | ||
| let _ = a.compare_exchange(0, 41, AcqRel, Acquire); | ||
| let _ = a.compare_exchange(0, 42, AcqRel, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 50 seq_cst monotonic | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 51 seq_cst acquire | ||
| // CHECK: cmpxchg i32* %{{.*}}, i32 0, i32 52 seq_cst seq_cst | ||
| let _ = a.compare_exchange(0, 50, SeqCst, Relaxed); | ||
| let _ = a.compare_exchange(0, 51, SeqCst, Acquire); | ||
| let _ = a.compare_exchange(0, 52, SeqCst, SeqCst); | ||
| } | ||
|
|
||
| // CHECK-LABEL: @compare_exchange_weak | ||
| #[no_mangle] | ||
| pub fn compare_exchange_weak(w: &AtomicI32) { | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 10 monotonic monotonic | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 11 acquire acquire | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 12 seq_cst seq_cst | ||
| let _ = w.compare_exchange_weak(1, 10, Relaxed, Relaxed); | ||
| let _ = w.compare_exchange_weak(1, 11, Relaxed, Acquire); | ||
| let _ = w.compare_exchange_weak(1, 12, Relaxed, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 20 release monotonic | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 21 acq_rel acquire | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 22 seq_cst seq_cst | ||
| let _ = w.compare_exchange_weak(1, 20, Release, Relaxed); | ||
| let _ = w.compare_exchange_weak(1, 21, Release, Acquire); | ||
| let _ = w.compare_exchange_weak(1, 22, Release, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 30 acquire monotonic | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 31 acquire acquire | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 32 seq_cst seq_cst | ||
| let _ = w.compare_exchange_weak(1, 30, Acquire, Relaxed); | ||
| let _ = w.compare_exchange_weak(1, 31, Acquire, Acquire); | ||
| let _ = w.compare_exchange_weak(1, 32, Acquire, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 40 acq_rel monotonic | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 41 acq_rel acquire | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 42 seq_cst seq_cst | ||
| let _ = w.compare_exchange_weak(1, 40, AcqRel, Relaxed); | ||
| let _ = w.compare_exchange_weak(1, 41, AcqRel, Acquire); | ||
| let _ = w.compare_exchange_weak(1, 42, AcqRel, SeqCst); | ||
|
|
||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 50 seq_cst monotonic | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 51 seq_cst acquire | ||
| // CHECK: cmpxchg weak i32* %{{.*}}, i32 1, i32 52 seq_cst seq_cst | ||
| let _ = w.compare_exchange_weak(1, 50, SeqCst, Relaxed); | ||
| let _ = w.compare_exchange_weak(1, 51, SeqCst, Acquire); | ||
| let _ = w.compare_exchange_weak(1, 52, SeqCst, SeqCst); | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters