Files
rust/tests/codegen-llvm
Tomasz Miąsko e9252a42f5 Skip parameter attribute deduction for MIR with spread_arg
When a MIR argument is spread at ABI level, deduced attributes are
potentially misapplied, since a spread argument can correspond to zero
or more arguments at ABI level.

Disable deduction for MIR using spread argument for the time being.
2025-10-28 23:07:04 +01:00
..
2025-10-19 09:28:39 -07:00
2025-08-15 16:42:21 +00:00
2025-08-20 16:35:33 +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