5 files changed, 21 insertions, 5 deletions

diff --git a/crates/rust-analyzer/src/cli/analysis_stats.rs b/crates/rust-analyzer/src/cli/analysis_stats.rs
index 5364e907c..843c0ca37 100644
--- a/crates/rust-analyzer/src/cli/analysis_stats.rs
+++ b/crates/rust-analyzer/src/cli/analysis_stats.rs
@@ -70,6 +70,7 @@ impl AnalysisStatsCmd {
             load_out_dirs_from_check: self.enable_build_scripts,
             wrap_rustc: false,
             with_proc_macro: self.enable_proc_macros,
+            prefill_caches: false,
         };
         let (host, vfs, _proc_macro) =
             load_workspace_at(&self.path, &cargo_config, &load_cargo_config, &|_| {})?;
diff --git a/crates/rust-analyzer/src/cli/diagnostics.rs b/crates/rust-analyzer/src/cli/diagnostics.rs
index c33c8179c..dc9a390fe 100644
--- a/crates/rust-analyzer/src/cli/diagnostics.rs
+++ b/crates/rust-analyzer/src/cli/diagnostics.rs
@@ -34,8 +34,12 @@ pub fn diagnostics(
     with_proc_macro: bool,
 ) -> Result<()> {
     let cargo_config = Default::default();
-    let load_cargo_config =
-        LoadCargoConfig { load_out_dirs_from_check, with_proc_macro, wrap_rustc: false };
+    let load_cargo_config = LoadCargoConfig {
+        load_out_dirs_from_check,
+        with_proc_macro,
+        wrap_rustc: false,
+        prefill_caches: false,
+    };
     let (host, _vfs, _proc_macro) =
         load_workspace_at(path, &cargo_config, &load_cargo_config, &|_| {})?;
     let db = host.raw_database();
diff --git a/crates/rust-analyzer/src/cli/load_cargo.rs b/crates/rust-analyzer/src/cli/load_cargo.rs
index 612fa527f..19cb1c046 100644
--- a/crates/rust-analyzer/src/cli/load_cargo.rs
+++ b/crates/rust-analyzer/src/cli/load_cargo.rs
@@ -18,6 +18,7 @@ pub(crate) struct LoadCargoConfig {
     pub(crate) load_out_dirs_from_check: bool,
     pub(crate) wrap_rustc: bool,
     pub(crate) with_proc_macro: bool,
+    pub(crate) prefill_caches: bool,
 }
 
 pub(crate) fn load_workspace_at(
@@ -83,7 +84,9 @@ fn load_workspace(
     let host =
         load_crate_graph(crate_graph, project_folders.source_root_config, &mut vfs, &receiver);
 
-    host.analysis().prime_caches(|_| {})?;
+    if config.prefill_caches {
+        host.analysis().prime_caches(|_| {})?;
+    }
     Ok((host, vfs, proc_macro_client))
 }
 
@@ -146,6 +149,7 @@ mod tests {
             load_out_dirs_from_check: false,
             wrap_rustc: false,
             with_proc_macro: false,
+            prefill_caches: false,
         };
         let (host, _vfs, _proc_macro) =
             load_workspace_at(path, &cargo_config, &load_cargo_config, &|_| {})?;
diff --git a/crates/rust-analyzer/src/cli/ssr.rs b/crates/rust-analyzer/src/cli/ssr.rs
index 1fd9b5a9b..0b3475e09 100644
--- a/crates/rust-analyzer/src/cli/ssr.rs
+++ b/crates/rust-analyzer/src/cli/ssr.rs
@@ -13,6 +13,7 @@ pub fn apply_ssr_rules(rules: Vec<SsrRule>) -> Result<()> {
         load_out_dirs_from_check: true,
         wrap_rustc: false,
         with_proc_macro: true,
+        prefill_caches: false,
     };
     let (host, vfs, _proc_macro) =
         load_workspace_at(&std::env::current_dir()?, &cargo_config, &load_cargo_config, &|_| {})?;
@@ -39,8 +40,12 @@ pub fn search_for_patterns(patterns: Vec<SsrPattern>, debug_snippet: Option<Stri
     use ide_db::base_db::SourceDatabaseExt;
     use ide_db::symbol_index::SymbolsDatabase;
     let cargo_config = Default::default();
-    let load_cargo_config =
-        LoadCargoConfig { load_out_dirs_from_check: true, wrap_rustc: true, with_proc_macro: true };
+    let load_cargo_config = LoadCargoConfig {
+        load_out_dirs_from_check: true,
+        wrap_rustc: true,
+        with_proc_macro: true,
+        prefill_caches: false,
+    };
     let (host, _vfs, _proc_macro) =
         load_workspace_at(&std::env::current_dir()?, &cargo_config, &load_cargo_config, &|_| {})?;
     let db = host.raw_database();
diff --git a/crates/rust-analyzer/src/integrated_benchmarks.rs b/crates/rust-analyzer/src/integrated_benchmarks.rs
index ec36a5f5c..8ddeb59f7 100644
--- a/crates/rust-analyzer/src/integrated_benchmarks.rs
+++ b/crates/rust-analyzer/src/integrated_benchmarks.rs
@@ -37,6 +37,7 @@ fn integrated_highlighting_benchmark() {
         load_out_dirs_from_check: true,
         wrap_rustc: false,
         with_proc_macro: false,
+        prefill_caches: false,
     };
 
     let (mut host, vfs, _proc_macro) = {
@@ -91,6 +92,7 @@ fn integrated_completion_benchmark() {
         load_out_dirs_from_check: true,
         wrap_rustc: false,
         with_proc_macro: false,
+        prefill_caches: true,
     };
 
     let (mut host, vfs, _proc_macro) = {