rust/src/test/codegen-units/partitioning, branch 1.53.0

Remove redundant `ignore-tidy-linelength` annotations

2021-04-03T20:30:20+00:00

This is step 2 towards fixing #77548. In the codegen and codegen-units test suites, the `//` comment markers were kept in order not to affect any source locations. This is because these tests cannot be automatically `--bless`ed.

Deprecate items that accidentally weren't deprecated

2021-03-10T00:09:20+00:00

Fixes #82080

ty: remove obsolete printer

2020-08-30T17:59:07+00:00

This commit removes the obsolete printer and replaces all uses of it with `FmtPrinter`. Of the replaced uses, all but one use was in `debug!` logging, two cases were notable: - `MonoItem::to_string` is used in `-Z print-mono-items` and therefore affects the output of all codegen-units tests. - `DefPathBasedNames` was used in `librustc_codegen_llvm/type_of.rs` with `LLVMStructCreateNamed` and that'll now get different values, but this should result in no functional change. Signed-off-by: David Wood

Change how compiler-builtins gets many CGUs

2020-06-15T14:38:00+00:00

This commit intends to fix an accidental regression from #70846. The goal of #70846 was to build compiler-builtins with a maximal number of CGUs to ensure that each module in the source corresponds to an object file. This high degree of control for compiler-builtins is desirable to ensure that there's at most one exported symbol per CGU, ideally enabling compiler-builtins to not conflict with the system libgcc as often. In #70846, however, only part of the compiler understands that compiler-builtins is built with many CGUs. The rest of the compiler thinks it's building with `sess.codegen_units()`. Notably the calculation of `sess.lto()` consults `sess.codegen_units()`, which when there's only one CGU it disables ThinLTO. This means that compiler-builtins is built without ThinLTO, which is quite harmful to performance! This is the root of the cause from #73135 where intrinsics were found to not be inlining trivial functions. The fix applied in this commit is to remove the special-casing of compiler-builtins in the compiler. Instead the build system is now responsible for special-casing compiler-builtins. It doesn't know exactly how many CGUs will be needed but it passes a large number that is assumed to be much greater than the number of source-level modules needed. After reading the various locations in the compiler source, this seemed like the best solution rather than adding more and more special casing in the compiler for compiler-builtins. Closes #73135

Keep codegen units unmerged when building compiler builtins

2020-04-06T00:00:00+00:00

Add a test case for incremental + codegen-units interaction.

2020-03-31T14:23:28+00:00

Remove `-Z incremental`.

2020-03-24T01:08:30+00:00

`-C incremental` was introduced over two years ago. `-Z incremental` was kept for transitioning, but it's been long enough now that it should be ok to remove it.

Update codegen-units tests

2020-02-26T19:45:46+00:00

Make drop-glue take advantage of -Zshare-generics.

2020-01-23T12:15:15+00:00

adjust codegen-units tests

2020-01-19T16:09:52+00:00