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| author | bors <bors@rust-lang.org> | 2021-08-21 09:25:28 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2021-08-21 09:25:28 +0000 |
| commit | db002a06ae9154a35d410550bc5132df883d7baa (patch) | |
| tree | 7e0777fa551baec421b9b53dd5dc0d9a5e2165e6 /compiler/rustc_builtin_macros/src/proc_macro_harness.rs | |
| parent | e7f7fe462a54b1caeb804a974cd43ba9fd7bee5c (diff) | |
| parent | 306259c64595807db0632f0a293bd06bf034f97b (diff) | |
| download | rust-db002a06ae9154a35d410550bc5132df883d7baa.tar.gz rust-db002a06ae9154a35d410550bc5132df883d7baa.zip | |
Auto merge of #87570 - nikic:llvm-13, r=nagisa
Upgrade to LLVM 13 Work in progress update to LLVM 13. Main changes: * InlineAsm diagnostics reported using SrcMgr diagnostic kind are now handled. Previously these used a separate diag handler. * Codegen tests are updated for additional attributes. * Some data layouts have changed. * Switch `#[used]` attribute from `llvm.used` to `llvm.compiler.used` to avoid SHF_GNU_RETAIN flag introduced in https://reviews.llvm.org/D97448, which appears to trigger a bug in older versions of gold. * Set `LLVM_INCLUDE_TESTS=OFF` to avoid Python 3.6 requirement. Upstream issues: * ~~https://bugs.llvm.org/show_bug.cgi?id=51210 (InlineAsm diagnostic reporting for module asm)~~ Fixed by https://github.com/llvm/llvm-project/commit/1558bb80c01b695ce12642527cbfccf16cf54ece. * ~~https://bugs.llvm.org/show_bug.cgi?id=51476 (Miscompile on AArch64 due to incorrect comparison elimination)~~ Fixed by https://github.com/llvm/llvm-project/commit/81b106584f2baf33e09be2362c35c1bf2f6bfe94. * https://bugs.llvm.org/show_bug.cgi?id=51207 (Can't set custom section flags anymore). Problematic change reverted in our fork, https://reviews.llvm.org/D107216 posted for upstream revert. * https://bugs.llvm.org/show_bug.cgi?id=51211 (Regression in codegen for #83623). This is an optimization regression that we may likely have to eat for this release. The fix for #83623 was based on an incorrect premise, and this needs to be properly addressed in the MergeICmps pass. The [compile-time impact](https://perf.rust-lang.org/compare.html?start=ef9549b6c0efb7525c9b012148689c8d070f9bc0&end=0983094463497eec22d550dad25576a894687002) is mixed, but quite positive as LLVM upgrades go. The LLVM 13 final release is scheduled for Sep 21st. The current nightly is scheduled for stable release on Oct 21st. r? `@ghost`
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