Files
rust/tests/codegen-llvm
Jonathan Brouwer 9fd5712bf5 Rollup merge of #151526 - ZuseZ4:fix-autodiff-codegen-tests, r=oli-obk
Fix autodiff codegen tests

Preparing autodiff for release on nightly. Since we haven't been running these tests in CI, they regressed over the last months. These changes fixes this and hopefully make the tests more robust for the future.

r? compiler
2026-02-04 14:39:19 +01:00
..
2025-11-08 10:57:35 -07:00
2026-01-27 10:43:21 -08:00
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