From a8c13a5ce1ee59c82b9138cc2073ab1b26187d00 Mon Sep 17 00:00:00 2001
From: Vincent Ambo <mail@tazj.in>
Date: Mon, 29 Aug 2022 18:27:06 +0300
Subject: fix(tvix/eval): allocate Thunk::upvalues with known capacity

The capacity (i.e. number of builtins) is known from the lambda, so we
can size it correctly right away.

Change-Id: Iab0b5a3f47d450fa9866c091ebbbed935b934907
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6351
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
---
 tvix/eval/src/value/thunk.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tvix/eval/src/value/thunk.rs')

diff --git a/tvix/eval/src/value/thunk.rs b/tvix/eval/src/value/thunk.rs
index 3b7cb7f5f711..9d52ded3c43c 100644
--- a/tvix/eval/src/value/thunk.rs
+++ b/tvix/eval/src/value/thunk.rs
@@ -51,8 +51,8 @@ pub struct Thunk(Rc<RefCell<ThunkRepr>>);
 impl Thunk {
     pub fn new(lambda: Rc<Lambda>) -> Self {
         Thunk(Rc::new(RefCell::new(ThunkRepr::Suspended {
+            upvalues: Vec::with_capacity(lambda.upvalue_count),
             lambda,
-            upvalues: vec![],
         })))
     }
 }
-- 
cgit 1.4.1