From 669b99d35e222f9449a4bdf9b0a0f615fce11666 Mon Sep 17 00:00:00 2001
From: Camille GILLOT <gillot.camille@gmail.com>
Date: Mon, 16 Oct 2023 18:33:05 +0000
Subject: [PATCH] Elaborate comment.

---
 src/tools/compiletest/src/runtest.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index dfb5013850f8..4868225f5e46 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -4261,6 +4261,8 @@ impl<'test> TestCx<'test> {
         // AllocId are numbered globally in a compilation session. This can lead to changes
         // depending on the exact compilation flags and host architecture. Meanwhile, we want
         // to keep them numbered, to see if the same id appears multiple times.
+        // So we remap to deterministic numbers that only depend on the subset of allocations
+        // that actually appear in the output.
         {
             use std::fmt::Write;