diff --git a/Cargo.toml b/Cargo.toml
index 79c9b57532d6..9861af1f8eae 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,10 +35,9 @@ smallvec = "1.6.1"
 #gimli = { path = "../" }
 
 [features]
-default = ["jit", "inline_asm", "jemalloc"]
+default = ["jit", "inline_asm"]
 jit = ["cranelift-jit", "libloading"]
 inline_asm = []
-jemalloc = []
 
 [profile.dev]
 # By compiling dependencies with optimizations, performing tests gets much faster.
diff --git a/src/bin/cg_clif.rs b/src/bin/cg_clif.rs
index b8d6958b3b25..983839d48d2d 100644
--- a/src/bin/cg_clif.rs
+++ b/src/bin/cg_clif.rs
@@ -1,7 +1,5 @@
 #![feature(rustc_private)]
 
-#[cfg(feature = "jemalloc")]
-extern crate jemalloc_sys;
 extern crate rustc_data_structures;
 extern crate rustc_driver;
 extern crate rustc_interface;
@@ -35,46 +33,6 @@ impl rustc_driver::Callbacks for CraneliftPassesCallbacks {
 }
 
 fn main() {
-    // Pull in jemalloc when enabled.
-    //
-    // Note that we're pulling in a static copy of jemalloc which means that to
-    // pull it in we need to actually reference its symbols for it to get
-    // linked. The two crates we link to here, std and rustc_driver, are both
-    // dynamic libraries. That means to pull in jemalloc we need to actually
-    // reference allocation symbols one way or another (as this file is the only
-    // object code in the rustc executable).
-    #[cfg(feature = "jemalloc")]
-    {
-        use std::os::raw::{c_int, c_void};
-        #[used]
-        static _F1: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::calloc;
-        #[used]
-        static _F2: unsafe extern "C" fn(*mut *mut c_void, usize, usize) -> c_int =
-            jemalloc_sys::posix_memalign;
-        #[used]
-        static _F3: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::aligned_alloc;
-        #[used]
-        static _F4: unsafe extern "C" fn(usize) -> *mut c_void = jemalloc_sys::malloc;
-        #[used]
-        static _F5: unsafe extern "C" fn(*mut c_void, usize) -> *mut c_void = jemalloc_sys::realloc;
-        #[used]
-        static _F6: unsafe extern "C" fn(*mut c_void) = jemalloc_sys::free;
-
-        // On OSX, jemalloc doesn't directly override malloc/free, but instead
-        // registers itself with the allocator's zone APIs in a ctor. However,
-        // the linker doesn't seem to consider ctors as "used" when statically
-        // linking, so we need to explicitly depend on the function.
-        #[cfg(target_os = "macos")]
-        {
-            extern "C" {
-                fn _rjem_je_zone_register();
-            }
-
-            #[used]
-            static _F7: unsafe extern "C" fn() = _rjem_je_zone_register;
-        }
-    }
-
     let start_time = std::time::Instant::now();
     let start_rss = get_resident_set_size();
     rustc_driver::init_rustc_env_logger();