Nikita Popov 4192743ab7 Revert "Auto merge of #107224 - nikic:llvm-16, r=cuviper"
This reverts commit 4a04d086cac54a41517d5657b59d5fe2caca2d71, reversing
changes made to 2d0a7def330ed90f416a3429dbb44c5ee2a914e5.
2023-03-18 23:49:24 +01:00
..
2023-02-25 21:43:25 +01:00
2023-01-11 09:32:08 +00:00
2023-02-25 21:43:25 +01:00
2023-02-14 19:21:58 -05:00
2023-02-14 19:21:58 -05:00

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