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| author | bors <bors@rust-lang.org> | 2021-09-25 13:43:52 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2021-09-25 13:43:52 +0000 |
| commit | 63cc2bb3d07d6c726dfcdc5f95cbe5ed4760641a (patch) | |
| tree | b1707204606ee934c8e3981cb5c751cc80be483e /compiler/rustc_codegen_llvm/src | |
| parent | e9f29a851917a706c01b6f51331894df1d15770b (diff) | |
| parent | 51203dc1c40393b864af70d0bc50b6c4f4ea34e4 (diff) | |
| download | rust-63cc2bb3d07d6c726dfcdc5f95cbe5ed4760641a.tar.gz rust-63cc2bb3d07d6c726dfcdc5f95cbe5ed4760641a.zip | |
Auto merge of #88243 - nikic:newpm-2, r=nagisa
Enable new pass manager with LLVM 13 The new pass manager is enabled by default in clang since Clang/LLVM 13. Per the recent discussion on llvm-dev (https://lists.llvm.org/pipermail/llvm-dev/2021-August/152305.html) the legacy pass manager will be unmaintained in LLVM 14 and removed entirely in LLVM 15. This switches us to use the new pass manager if LLVM >= 13 is used. It's possible to still use the old pass manager using `-Z new-llvm-pass-manager=no`.
Diffstat (limited to 'compiler/rustc_codegen_llvm/src')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/back/write.rs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/rustc_codegen_llvm/src/back/write.rs b/compiler/rustc_codegen_llvm/src/back/write.rs index 791604a1827..92199f611ba 100644 --- a/compiler/rustc_codegen_llvm/src/back/write.rs +++ b/compiler/rustc_codegen_llvm/src/back/write.rs @@ -370,8 +370,9 @@ fn get_pgo_use_path(config: &ModuleConfig) -> Option<CString> { } pub(crate) fn should_use_new_llvm_pass_manager(config: &ModuleConfig) -> bool { - // The new pass manager is disabled by default. - config.new_llvm_pass_manager.unwrap_or(false) + // The new pass manager is enabled by default for LLVM >= 13. + // This matches Clang, which also enables it since Clang 13. + config.new_llvm_pass_manager.unwrap_or_else(|| llvm_util::get_version() >= (13, 0, 0)) } pub(crate) unsafe fn optimize_with_new_llvm_pass_manager( |