Consistently use LLVM lifetime markers during codegen

Ensure that inliner inserts lifetime markers if they have been emitted during
codegen. Otherwise if allocas from inlined functions are merged together,
lifetime markers from one function might invalidate load & stores performed
by the other one.

1 files changed, 1 insertions, 9 deletions

diff --git a/src/librustc_codegen_llvm/builder.rs b/src/librustc_codegen_llvm/builder.rs
index 89bd96c1fe2..f5ae9824df8 100644
--- a/src/librustc_codegen_llvm/builder.rs
+++ b/src/librustc_codegen_llvm/builder.rs
@@ -18,7 +18,6 @@ use rustc_data_structures::small_c_str::SmallCStr;
 use rustc_hir::def_id::DefId;
 use rustc_middle::ty::layout::TyAndLayout;
 use rustc_middle::ty::{self, Ty, TyCtxt};
-use rustc_session::config::{self, Sanitizer};
 use rustc_target::abi::{self, Align, Size};
 use rustc_target::spec::{HasTargetSpec, Target};
 use std::borrow::Cow;
@@ -1243,14 +1242,7 @@ impl Builder<'a, 'll, 'tcx> {
             return;
         }
 
-        let opts = &self.cx.sess().opts;
-        let emit = match opts.debugging_opts.sanitizer {
-            // Some sanitizer use lifetime intrinsics. When they are in use,
-            // emit lifetime intrinsics regardless of optimization level.
-            Some(Sanitizer::Address | Sanitizer::Memory) => true,
-            _ => opts.optimize != config::OptLevel::No,
-        };
-        if !emit {
+        if !self.cx().sess().emit_lifetime_markers() {
             return;
         }