Files
rust/tests/codegen-llvm
Matthew Maurer b639b0a4d8 llvm: Tolerate dead_on_return attribute changes
The attribute now has a size parameter and sorts differently:
* Explicitly omit size parameter during construction on 23+
* Tolerate alternate sorting in tests

https://github.com/llvm/llvm-project/pull/171712
2026-01-21 23:39:03 +00:00
..
2025-11-08 10:57:35 -07:00
2025-08-15 16:42:21 +00:00

The files here use the LLVM FileCheck framework, documented at https://llvm.org/docs/CommandGuide/FileCheck.html.

One extension worth noting is the use of revisions as custom prefixes for FileCheck. If your codegen test has different behavior based on the chosen target or different compiler flags that you want to exercise, you can use a revisions annotation, like so:

// revisions: aaa bbb
// [bbb] compile-flags: --flags-for-bbb

After specifying those variations, you can write different expected, or explicitly unexpected output by using <prefix>-SAME: and <prefix>-NOT:, like so:

// CHECK: expected code
// aaa-SAME: emitted-only-for-aaa
// aaa-NOT:                        emitted-only-for-bbb
// bbb-NOT:  emitted-only-for-aaa
// bbb-SAME:                       emitted-only-for-bbb