bors 22e9fe644e Auto merge of #112974 - matthiaskrgr:rollup-hnk7ans, r=matthiaskrgr
Rollup of 8 pull requests

Successful merges:

 - #112616 (Improve tests on targets without unwinding)
 - #112643 (Always register sized obligation for argument)
 - #112740 (Add link to rustdoc book search chapter in help popover)
 - #112810 (Don't ICE on unnormalized struct tail in layout computation)
 - #112870 (Migrate `item_bounds` to `ty::Clause`)
 - #112925 (Stop hiding const eval limit in external macros)
 - #112960 ([tests/rustdoc] Add `@files` command)
 - #112962 (Fix rustdoc gui tester)

r? `@ghost`
`@rustbot` modify labels: rollup
2023-06-23 20:45:23 +00:00
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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