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This avoids issues with the GitHub /archive/ links which can be somewhat
unreliable and are currently causing CI issues.
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fix(bootstrap): rename exclude flag to skip 🐛
fixes #111894
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This makes it clearer that the LLVM is the host one (it doesn't necessarily have to be downloaded).
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Use the correct `llvm-profdata` binary in `opt-dist`
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Resolve correct archive version name in `opt-dist`
Should resolve the master part of https://github.com/rust-lang/rust/issues/113784.
r? `@Mark-Simulacrum`
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archive
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Build the first LLVM without LTO in try builds
Currently, we perform three LLVM builds in the Linux x64 dist builder, which is used for `try` builds:
1) "Normal" LLVM - takes ~5s to compile thanks to `sccache`, but ~8 minutes to link because of ThinLTO
2) PGO instrumented LLVM - same timings as 1)
3) PGO optimized LLVM - takes about 20 minutes to build
When I tried to disable LTO for build 1), it suddenly takes only about a minute to build, because the linking step is much faster. The first LLVM doesn't really need LTO all that much. Without it, it will be a bit slower to build `rustc` in two subsequent steps, but it seems that the ~7 minutes saved on linking it do win that back.
Btw, we can't use the host LLVM for build 1), because this LLVM then builds `rustc` in PGO instrumented mode, and we need the same compiler when later PGO optimizing `rustc`. And we want to use our in-house LLVM for that I think.
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Some of the output was quite verbose in CI logs, this should help with that.
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