From 5a61c45f3493eb348bd2d84b58202ec4d4a28145 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Paul=20W=C3=B6gerer?= <paul.woegerer@oracle.com>
Date: Wed, 24 Apr 2024 17:43:43 +0200
Subject: [PATCH] Use memory-efficient List for SnippetSignature.parameters

---
 .../src/jdk/graal/compiler/hotspot/SnippetSignature.java    | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/SnippetSignature.java b/compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/SnippetSignature.java
index 367fb7107108..7ab6f7e0685b 100644
--- a/compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/SnippetSignature.java
+++ b/compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/hotspot/SnippetSignature.java
@@ -45,7 +45,7 @@
  */
 public final class SnippetSignature implements Signature {
 
-    private final List<String> parameters = new ArrayList<>();
+    private final List<String> parameters;
     private final String returnType;
     private final String originalString;
 
@@ -66,7 +66,9 @@ static synchronized void initPrimitiveKindCache(MetaAccessProvider metaAccess) {
     }
 
     public SnippetSignature(String signature) {
-        returnType = SignatureUtil.parseSignature(signature, parameters);
+        ArrayList<String> buffer = new ArrayList<>();
+        returnType = SignatureUtil.parseSignature(signature, buffer);
+        parameters = List.copyOf(buffer);
         originalString = signature;
     }