Files
rust/tests/codegen-llvm
bors 3a70d0349f Auto merge of #152702 - oli-obk:nonnulltransmute, r=scottmcm
Prepare NonNull for pattern types



Pull out the changes that affect some tests, but do not require pattern types.

See https://github.com/rust-lang/rust/pull/136006#discussion_r2806740338 for what triggered this PR

r? @scottmcm
2026-02-27 13:04:46 +00:00
..
2025-11-08 10:57:35 -07:00
2026-01-26 13:43:06 -06:00
2025-08-15 16:42:21 +00:00
2026-02-24 08:33:15 +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