[llvm] [libcxx] remove linux buildkite builders entirely (PR #73825)

[via llvm-commits]

https://github.com/EricWF updated https://github.com/llvm/llvm-project/pull/73825

>From 5a11a7998d975dd9286df9c74bb2b9ed161e3a54 Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Wed, 29 Nov 2023 12:18:00 -0500
Subject: [PATCH 1/4] remove linux buildkite builders entirely

---
 .github/workflows/libcxx-build-and-test.yaml |  4 ++++
 libcxx/utils/ci/buildkite-pipeline.yml       | 14 --------------
 2 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index dccfe54d4646767..5204fb4569ed309 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -158,6 +158,10 @@ jobs:
           'generic-no-wide-characters',
           'generic-static',
           'generic-with_llvm_unwinder'
+          # TODO Find a better place for the benchmark and bootstrapping builds to live. They're either very expensive
+          # or don't provide much value since the benchmark run results are too noise on the bots.
+          'benchmarks',
+          'bootstrapping-build',
         ]
         machine: [ 'libcxx-runners-8' ]
         std_modules: [ 'OFF' ]
diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index 3c49247ab5aeeb9..7077f754220eb21 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -101,20 +101,6 @@ environment_definitions:
 
 
 steps:
-- label: Bootstrapping build
-  command: libcxx/utils/ci/run-buildbot bootstrapping-build
-  env:
-    <<: *common_env
-  <<: *linux_agent
-  <<: *common
-
-- label: Benchmarks
-  command: libcxx/utils/ci/run-buildbot benchmarks
-  env:
-    <<: *common_env
-  <<: *linux_agent
-  <<: *common
-
 - group: ':windows: Windows'
   steps:
   - label: Clang-cl (DLL)

>From 7f3962b3f0809e27735ebf21d2bcdd41bbe5a58f Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Wed, 29 Nov 2023 13:54:54 -0500
Subject: [PATCH 2/4] Fully remove the GCE buildkite builders on linux

---
 libcxx/utils/ci/buildkite-pipeline.yml | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index 7077f754220eb21..db870a3a464527e 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -43,14 +43,9 @@ definitions:
 
 # Define agents using YAML anchors to reduce duplication
 agents_definitions:
-  _linux_agent: &linux_agent
-    agents:
-      queue: libcxx-builders
-      os: linux
   _windows_agent: &windows_agent
     agents:
       queue: windows
-
   # Mac OS Builders
   _mac_agent_x86: &mac_agent_x86
     agents:

>From e2a8facb79fa9c3a0e9cd266be084a3d85355a1f Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Wed, 29 Nov 2023 15:06:47 -0500
Subject: [PATCH 3/4] regenerate diff

---
 libcxx/utils/ci/buildkite-pipeline.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index db870a3a464527e..51b9999026247fd 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -46,6 +46,7 @@ agents_definitions:
   _windows_agent: &windows_agent
     agents:
       queue: windows
+
   # Mac OS Builders
   _mac_agent_x86: &mac_agent_x86
     agents:
@@ -208,6 +209,11 @@ steps:
     <<: *arm_agent_armv8l
     <<: *common
 
+  - label: Armv7-M picolibc
+    command: libcxx/utils/ci/run-buildbot armv7m-picolibc
+    <<: *arm_agent_aarch64
+    <<: *common
+
 - group: AIX
   steps:
   - label: AIX (32-bit)

>From 0fc20869a5ee50f873232f5b873f8efb685c9265 Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Wed, 29 Nov 2023 15:12:17 -0500
Subject: [PATCH 4/4] fix pipeline

---
 .github/workflows/libcxx-build-and-test.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index 5204fb4569ed309..eb7072ea18aae20 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -157,11 +157,11 @@ jobs:
           'generic-no-unicode',
           'generic-no-wide-characters',
           'generic-static',
-          'generic-with_llvm_unwinder'
+          'generic-with_llvm_unwinder',
           # TODO Find a better place for the benchmark and bootstrapping builds to live. They're either very expensive
           # or don't provide much value since the benchmark run results are too noise on the bots.
           'benchmarks',
-          'bootstrapping-build',
+          'bootstrapping-build'
         ]
         machine: [ 'libcxx-runners-8' ]
         std_modules: [ 'OFF' ]