run with -O0 unless on release or backport branch

Author: KristofferC

.buildkite/run_tests.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+if [[ "${BUILDKITE_BRANCH}" =~ ^backports-release-.*$ || "${BUILDKITE_BRANCH}" =~ ^release-.*$ ]]; then
+  OPT_LEVEL=2
+else
+  OPT_LEVEL=0
+fi
+
+julia --color=yes --project=.ci -e 'using Pkg; Pkg.instantiate()'
+julia --color=yes --project=.ci .ci/create_sysimage_and_run_tests.jl --optimize=$OPT_LEVEL

.buildkite/runtests.yml

@@ -1,48 +1,38 @@
----
 steps:
-  # Linux x86_64
   - label: ":linux: linux-x86_64"
     plugins:
-      # Julia installation outside the sandbox
       - JuliaCI/julia#v1:
           version: '1.10'
       - staticfloat/sandbox#v2:
           rootfs_url: https://github.com/JuliaCI/rootfs-images/releases/download/v6.00/package_linux.x86_64.tar.gz
           rootfs_treehash: "4dcde853eb5baaa0a8f087b633eaf955dc94b5dc"
           uid: 1000
           gid: 1000
-      # Julia installation inside the sandbox
       - JuliaCI/julia#v1:
           version: "nightly"
-    command: |
-      julia --color=yes --project=.ci -e 'using Pkg; Pkg.instantiate()'
-      julia --color=yes --project=.ci .ci/create_sysimage_and_run_tests.jl
+    command: .ci/run_tests.sh
     agents:
       queue: "julia"
       os: "linux"
       arch: "x86_64"
       cpuset_limited: "true"
     timeout_in_minutes: 120
-  # macOS aarch64
+
   - label: ":macos: macos-aarch64"
     plugins:
       - JuliaCI/julia#v1:
           version: "nightly"
-    command: |
-      julia --color=yes --project=.ci -e 'using Pkg; Pkg.instantiate()'
-      julia --color=yes --project=.ci .ci/create_sysimage_and_run_tests.jl
+    command: .ci/run_tests.sh
     agents:
       queue: "julia"
       os: "macos"
       arch: "aarch64"
-  # windows x86_64
+
   - label: ":windows: windows-x86_64"
     plugins:
       - JuliaCI/julia#v1:
           version: "nightly"
-    command: |
-      julia --color=yes --project=.ci -e 'using Pkg; Pkg.instantiate()'
-      julia --color=yes --project=.ci .ci/create_sysimage_and_run_tests.jl
+    command: .ci/run_tests.sh
     agents:
       queue: "julia"
       os: "windows"