diff --git a/Cargo.lock b/Cargo.lock
index 657831be894f8..da16c6581cfb1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1658,6 +1658,24 @@ name = "memoffset"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "mimalloc-sys"
+version = "0.1.1"
+source = "git+https://github.com/Zoxc/mimallocator.git#8ac805a5ecfeb55f89b309aa31038fc02108f570"
+dependencies = [
+ "cmake 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fs_extra 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "mimallocator"
+version = "0.1.0"
+source = "git+https://github.com/Zoxc/mimallocator.git#8ac805a5ecfeb55f89b309aa31038fc02108f570"
+dependencies = [
+ "mimalloc-sys 0.1.1 (git+https://github.com/Zoxc/mimallocator.git)",
+]
+
 [[package]]
 name = "minifier"
 version = "0.0.30"
@@ -2716,6 +2734,7 @@ name = "rustc-main"
 version = "0.0.0"
 dependencies = [
  "jemalloc-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mimallocator 0.1.0 (git+https://github.com/Zoxc/mimallocator.git)",
  "rustc_codegen_ssa 0.0.0",
  "rustc_driver 0.0.0",
  "rustc_target 0.0.0",
@@ -4546,6 +4565,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2efc7bc57c883d4a4d6e3246905283d8dae951bb3bd32f49d6ef297f546e1c39"
 "checksum memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2ffa2c986de11a9df78620c01eeaaf27d94d3ff02bf81bfcca953102dd0c6ff"
 "checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
+"checksum mimalloc-sys 0.1.1 (git+https://github.com/Zoxc/mimallocator.git)" = "<none>"
+"checksum mimallocator 0.1.0 (git+https://github.com/Zoxc/mimallocator.git)" = "<none>"
 "checksum minifier 0.0.30 (registry+https://github.com/rust-lang/crates.io-index)" = "4c909e78edf61f3aa0dd2086da168cdf304329044bbf248768ca3d20253ec8c0"
 "checksum miniz-sys 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "0300eafb20369952951699b68243ab4334f4b10a88f411c221d444b36c40e649"
 "checksum miniz_oxide 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5ad30a47319c16cde58d0314f5d98202a80c9083b5f61178457403dfb14e509c"
diff --git a/src/rustc/Cargo.toml b/src/rustc/Cargo.toml
index 997d139383798..2e7968913a0a4 100644
--- a/src/rustc/Cargo.toml
+++ b/src/rustc/Cargo.toml
@@ -9,6 +9,8 @@ name = "rustc_binary"
 path = "rustc.rs"
 
 [dependencies]
+mimallocator = { git = "https://github.com/Zoxc/mimallocator.git" }
+
 rustc_target = { path = "../librustc_target" }
 rustc_driver = { path = "../librustc_driver" }
 
diff --git a/src/rustc/rustc.rs b/src/rustc/rustc.rs
index 4a1786f89ed55..30f0a8e7bd65e 100644
--- a/src/rustc/rustc.rs
+++ b/src/rustc/rustc.rs
@@ -1,3 +1,6 @@
+#[global_allocator]
+static ALLOC: mimallocator::Mimalloc = mimallocator::Mimalloc;
+
 fn main() {
     // Pull in jemalloc when enabled.
     //