Files
rust/tests/codegen-llvm
Eddy (Eduard) Stefes f39fa9e4c0 add rustc option -Zpacked-stack
this enables packed-stack just as -mpacked-stack in clang and gcc.
packed-stack is needed on s390x for kernel development.

Co-authored-by: Ralf Jung <post@ralfj.de>
2026-03-31 09:06:31 +02:00
..
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
2026-03-31 09:06:31 +02:00

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