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Use new pass manager on s390x with LLVM 14

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The problematic compile-time issue should be resolved with this
version.
This commit is contained in:
Nikita Popov 2022-03-09 10:00:07 +01:00
parent 8a0045fd5b
commit 0c7d0a19dd
1 changed files with 5 additions and 4 deletions
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9
compiler/rustc_codegen_llvm/src/llvm_util.rs
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@ -527,8 +527,9 @@ pub(crate) fn should_use_new_llvm_pass_manager(user_opt: &Option<bool>, target_a
// The new pass manager is enabled by default for LLVM >= 13.
// This matches Clang, which also enables it since Clang 13.
// FIXME: There are some perf issues with the new pass manager
// when targeting s390x, so it is temporarily disabled for that
// arch, see https://github.com/rust-lang/rust/issues/89609
user_opt.unwrap_or_else(|| target_arch != "s390x" && llvm_util::get_version() >= (13, 0, 0))
// There are some perf issues with the new pass manager when targeting
// s390x with LLVM 13, so enable the new pass manager only with LLVM 14.
// See https://github.com/rust-lang/rust/issues/89609.
let min_version = if target_arch == "s390x" { 14 } else { 13 };
user_opt.unwrap_or_else(|| llvm_util::get_version() >= (min_version, 0, 0))
}