Setup global allocator in the correct crate

It worked before, but was roundabout

Cargo.lock

@@ -1137,7 +1137,6 @@ dependencies = [
  "backtrace",
  "cfg-if",
  "libc",
- "mimalloc",
  "once_cell",
  "ra_arena",
 ]
@@ -1362,6 +1361,7 @@ dependencies = [
  "log",
  "lsp-server",
  "lsp-types",
+ "mimalloc",
  "parking_lot",
  "pico-args",
  "ra_cfg",

crates/ra_prof/Cargo.toml

@@ -13,7 +13,6 @@ doctest = false
 ra_arena = { path = "../ra_arena" }
 once_cell = "1.3.1"
 backtrace = { version = "0.3.44", optional = true }
-mimalloc = { version = "0.1.19", default-features = false, optional = true }
 cfg-if = "0.1.10"
 libc = "0.2.73"
 
@@ -22,5 +21,4 @@ cpu_profiler = []
 
 # Uncomment to enable for the whole crate graph
 # default = [ "backtrace" ]
-# default = [ "mimalloc" ]
 # default = [ "cpu_profiler" ]

crates/ra_prof/src/lib.rs

@@ -13,10 +13,6 @@ pub use crate::{
     memory_usage::{Bytes, MemoryUsage},
 };
 
-#[cfg(all(feature = "mimalloc"))]
-#[global_allocator]
-static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
-
 /// Prints backtrace to stderr, useful for debugging.
 #[cfg(feature = "backtrace")]
 pub fn print_backtrace() {

crates/rust-analyzer/Cargo.toml

@@ -29,6 +29,7 @@ serde = { version = "1.0.106", features = ["derive"] }
 serde_json = "1.0.48"
 threadpool = "1.7.1"
 rayon = "1.3.1"
+mimalloc = { version = "0.1.19", default-features = false, optional = true }
 
 stdx = { path = "../stdx" }
 
@@ -62,6 +63,3 @@ expect = { path = "../expect" }
 test_utils = { path = "../test_utils" }
 mbe = { path = "../ra_mbe", package = "ra_mbe" }
 tt = { path = "../ra_tt", package = "ra_tt" }
-
-[features]
-mimalloc = [ "ra_prof/mimalloc" ]

crates/rust-analyzer/src/bin/main.rs

@@ -16,6 +16,10 @@ use vfs::AbsPathBuf;
 
 use crate::args::HelpPrinted;
 
+#[cfg(all(feature = "mimalloc"))]
+#[global_allocator]
+static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
+
 fn main() -> Result<()> {
     setup_logging()?;
     let args = match args::Args::parse()? {