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| author | Nikita Popov <nikita.ppv@gmail.com> | 2021-08-21 22:20:32 +0200 |
|---|---|---|
| committer | Nikita Popov <nikita.ppv@gmail.com> | 2021-09-25 11:24:23 +0200 |
| commit | be01f42f73137129f5998e626e0639270066f5c9 (patch) | |
| tree | 408b38e823f3713604f065d2ce9fd6b83735f9c6 /compiler/rustc_codegen_llvm/src | |
| parent | 60fe8b3a65be709fe2163b8ab438ef14209055cc (diff) | |
| download | rust-be01f42f73137129f5998e626e0639270066f5c9.tar.gz rust-be01f42f73137129f5998e626e0639270066f5c9.zip | |
Enable new pass manager on LLVM 13
The new pass manager is enabled by default in clang since Clang/LLVM 13. While the discussion about this is still ongoing (https://lists.llvm.org/pipermail/llvm-dev/2021-August/152305.html) it's expected that support for the legacy pass manager will be dropped either in LLVM 14 or 15. This switches us to use the new pass manager if LLVM >= 13 is used.
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( |