[libcxx-commits] [libcxx] [libc++] Stabilize the LNT machines we are going to generate data for (PR #215583)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne updated https://github.com/llvm/llvm-project/pull/215583

>From 2d6c9b227dfdd3f74214513476e23e05f60bf7c4 Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne.2 at gmail.com>
Date: Tue, 11 Aug 2026 10:10:54 -0400
Subject: [PATCH 1/3] [libc++] Stabilize the machines we are going to generate
 data for

Now that the test suite has the necessary fixes to go back in time
reasonably far, update it and update the names of the machines to
version them.
---
 libcxx/utils/ci/lnt/machines.json | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/libcxx/utils/ci/lnt/machines.json b/libcxx/utils/ci/lnt/machines.json
index 792ebc81cca5c..fe1e0cb729f41 100644
--- a/libcxx/utils/ci/lnt/machines.json
+++ b/libcxx/utils/ci/lnt/machines.json
@@ -1,13 +1,13 @@
 [
   {
-    "lnt-machine": "macos-26.5-arm64",
-    "runner": ["self-hosted", "macOS", "ARM64", "26", "26.5"],
+    "lnt-machine": "macos-26.5-arm64-20260811",
+    "runner": ["self-hosted", "macOS", "apple-runners"],
     "cxx": "clang++",
     "running-on": "macos",
     "xcode-version": "26.5",
-    "benchmark-suite-version": "810062e9771d8b47c25a89311139c621c13bbf9f",
+    "benchmark-suite-version": "TODO",
     "coverage": {
-      "since": "2025-01-01",
+      "since": "2024-01-01",
       "every": "week",
       "samples": 3,
       "max-in-flight": 4,
@@ -15,13 +15,13 @@
     }
   },
   {
-    "lnt-machine": "linux-x86_64",
+    "lnt-machine": "linux-x86_64-20260811",
     "runner": "llvm-premerge-libcxx-runners",
     "cxx": "clang++-22",
     "running-on": "linux",
-    "benchmark-suite-version": "810062e9771d8b47c25a89311139c621c13bbf9f",
+    "benchmark-suite-version": "TODO",
     "coverage": {
-      "since": "2025-01-01",
+      "since": "2024-01-01",
       "every": "week",
       "samples": 3,
       "max-in-flight": 8,

>From eebfcedea592d2a23d5de33b3cec50b17cdf6f2e Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne.2 at gmail.com>
Date: Wed, 12 Aug 2026 14:01:47 -0400
Subject: [PATCH 2/3] Go back until 2023

---
 libcxx/utils/ci/lnt/machines.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libcxx/utils/ci/lnt/machines.json b/libcxx/utils/ci/lnt/machines.json
index fe1e0cb729f41..0004f34f387aa 100644
--- a/libcxx/utils/ci/lnt/machines.json
+++ b/libcxx/utils/ci/lnt/machines.json
@@ -7,7 +7,7 @@
     "xcode-version": "26.5",
     "benchmark-suite-version": "TODO",
     "coverage": {
-      "since": "2024-01-01",
+      "since": "2023-01-01",
       "every": "week",
       "samples": 3,
       "max-in-flight": 4,
@@ -21,7 +21,7 @@
     "running-on": "linux",
     "benchmark-suite-version": "TODO",
     "coverage": {
-      "since": "2024-01-01",
+      "since": "2023-01-01",
       "every": "week",
       "samples": 3,
       "max-in-flight": 8,

>From 11c426bf58415fa91e32d862b164b6e0b07867eb Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne.2 at gmail.com>
Date: Wed, 12 Aug 2026 17:14:15 -0400
Subject: [PATCH 3/3] Pin test suite

---
 libcxx/utils/ci/lnt/machines.json | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libcxx/utils/ci/lnt/machines.json b/libcxx/utils/ci/lnt/machines.json
index 0004f34f387aa..e3db18479efcd 100644
--- a/libcxx/utils/ci/lnt/machines.json
+++ b/libcxx/utils/ci/lnt/machines.json
@@ -1,11 +1,11 @@
 [
   {
-    "lnt-machine": "macos-26.5-arm64-20260811",
+    "lnt-machine": "macos-26.5-arm64-20260812",
     "runner": ["self-hosted", "macOS", "apple-runners"],
     "cxx": "clang++",
     "running-on": "macos",
     "xcode-version": "26.5",
-    "benchmark-suite-version": "TODO",
+    "benchmark-suite-version": "8bb5e216937e6b541f351aa1637c67e85a43ada0",
     "coverage": {
       "since": "2023-01-01",
       "every": "week",
@@ -15,11 +15,11 @@
     }
   },
   {
-    "lnt-machine": "linux-x86_64-20260811",
+    "lnt-machine": "linux-x86_64-20260812",
     "runner": "llvm-premerge-libcxx-runners",
     "cxx": "clang++-22",
     "running-on": "linux",
-    "benchmark-suite-version": "TODO",
+    "benchmark-suite-version": "8bb5e216937e6b541f351aa1637c67e85a43ada0",
     "coverage": {
       "since": "2023-01-01",
       "every": "week",