rust/src/bootstrap/defaults, branch 1.82.0

remove `debug-logging` default from tools profile

2024-07-18T13:22:02+00:00

`debug-logging` conflicts with `download-rustc` option, and doesn't really make sense to enable it for a profile that is used for tool development. Signed-off-by: onur-ozkan

add `lld = true` to default dist profile

2024-06-28T08:33:35+00:00

Make sure lld is enabled for dist profile unless it is explicitly disabled. Signed-off-by: onur-ozkan

Do not enable `llvm-bitcode-linker` in most default bootstrap profiles

2024-06-14T13:49:09+00:00

Set `debuginfo-level = "line-tables-only"` for compiler profile

2024-05-16T00:38:22+00:00

This profile has only undergone minimal tweaks since it was originally drafted. I asked a number of compiler contributors and they said they set rust.debug explicitly. This was even true for one contributor that set `rust.debug` = false! Almost everyone seems slightly surprised that `rust.debug = true` is not the default. However, adding full debuginfo at this level costs multiple gigabytes! We can still get much better debuginfo by setting "line-tables-only" at the cost of only 150~200 MB.

Bootstrap: Add argument for building llvm bitcode linker

2024-03-11T12:35:55+00:00

set `llvm.assertions` to false in compiler profile

2024-02-22T19:15:05+00:00

Having this set to true disrupts compiler development workflows for people who use `llvm.download-ci-llvm = true` because we don't provide ci-llvm on the `rustc-alt-builds` server. Therefore, it is kept off by default. Signed-off-by: onur-ozkan

Remove the "codegen" profile from bootstrap

2024-02-19T16:26:41+00:00

This profile originally made sense when download-ci-llvm = if-unchanged didn't exist and we had the bad tradeoff of "never modify or always compile". Thankfully, these grim times are over and we have discovered clean water, so the only differentiator between the two profiles is the codegen profile having LLVM assertions. Adding them doesn't cause that much of a slowdown, <10% on UI tests from an unscientific benchmark. It also had LLVM warnings when compiling, which makes sense for every compiler contributor brave enough to compile LLVM. The way I removed is by just issueing a nice error message. Given that everyone with this profile should be a contributor and not someone like a distro who is more upset when things break, this should be fine. If it isn't, we can always fall back to just letting codegen mean compiler.

Add `rust.frame-pointers` config option

2024-02-18T21:23:09+00:00

This is very helpful for profiling. I've hacked this in many times, so let's add it properly.

merge `if-available` and `if-unchanged` for `download-ci-llvm`

2023-11-11T15:29:11+00:00

Signed-off-by: onur-ozkan

Fix issue #110087

2023-11-08T01:22:28+00:00

Three tasks have been implemented here. Add a new `download-ci-llvm = if-unchange` option and enable if by default for `profile = codegen`. Include all build artifacts by traversing the llvm-project build output, Keep the downloadable llvm the same state as if you have just run a full source build. After selecting the codegen profile during ./x.py setup, the submodule will be automatically downloaded.