Files
rust/tests/codegen-llvm
Kevin Reid f700fdc001 Explicitly forget the zero remaining elements in vec::IntoIter::fold() and spec_extend().
Adds internal `vec::IntoIter::forget_remaining_elements_and_dealloc()`,
which is used by `fold()` and `spec_extend()`, when those operations
complete, to forget the zero remaining elements and only deallocate the
allocation, ensuring that there will never be a useless loop to drop
zero remaining elements when the iterator is dropped.
2026-03-03 19:46:06 -08:00
..
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