3 files changed, 12 insertions, 3 deletions

diff --git a/xtask/src/ast_src.rs b/xtask/src/ast_src.rs
index 046d68f52..0fd1d13e6 100644
--- a/xtask/src/ast_src.rs
+++ b/xtask/src/ast_src.rs
@@ -104,6 +104,7 @@ pub(crate) const KINDS_SRC: KindsSrc = KindsSrc {
         "MACRO_DEF",
         "PAREN_TYPE",
         "TUPLE_TYPE",
+        "MACRO_TYPE",
         "NEVER_TYPE",
         "PATH_TYPE",
         "PTR_TYPE",
diff --git a/xtask/src/install.rs b/xtask/src/install.rs
index 12962bcfa..202c74426 100644
--- a/xtask/src/install.rs
+++ b/xtask/src/install.rs
@@ -67,6 +67,7 @@ pub struct ServerOpt {
 pub enum Malloc {
     System,
     Mimalloc,
+    Jemalloc,
 }
 
 impl InstallCmd {
@@ -176,6 +177,7 @@ fn install_server(opts: ServerOpt) -> Result<()> {
     let features = match opts.malloc {
         Malloc::System => &[][..],
         Malloc::Mimalloc => &["--features", "mimalloc"],
+        Malloc::Jemalloc => &["--features", "jemalloc"],
     };
 
     let cmd = cmd!("cargo install --path crates/rust-analyzer --locked --force {features...}");
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index dec48629c..c3e5c7326 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -49,7 +49,8 @@ FLAGS:
         --client[=CLIENT] Install only VS Code plugin.
                           CLIENT is one of 'code', 'code-exploration', 'code-insiders', 'codium', or 'code-oss'
         --server          Install only the language server
-        --mimalloc        Use mimalloc for server
+        --mimalloc        Use mimalloc allocator for server
+        --jemalloc        Use jemalloc allocator for server
     -h, --help            Prints help information
         "
                 );
@@ -65,8 +66,13 @@ FLAGS:
                 return Ok(());
             }
 
-            let malloc =
-                if args.contains("--mimalloc") { Malloc::Mimalloc } else { Malloc::System };
+            let malloc = if args.contains("--mimalloc") {
+                Malloc::Mimalloc
+            } else if args.contains("--jemalloc") {
+                Malloc::Jemalloc
+            } else {
+                Malloc::System
+            };
 
             let client_opt = args.opt_value_from_str("--client")?;