[llvm] [CI] Make monolithic-* scripts only run Github steps on Github (PR #152197)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 updated https://github.com/llvm/llvm-project/pull/152197

>From fc59b05b1a2c1c1fe0155ee04c5dfd206b429274 Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Tue, 5 Aug 2025 20:33:47 +0000
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
 =?UTF-8?q?l=20version?=
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Created using spr 1.3.6
---
 .ci/monolithic-linux.sh   | 42 +++++++++++++++++++++------------------
 .ci/monolithic-windows.sh | 27 +++++++++++++++++--------
 2 files changed, 42 insertions(+), 27 deletions(-)

diff --git a/.ci/monolithic-linux.sh b/.ci/monolithic-linux.sh
index 6db24d894eb73..fffd8fef21382 100755
--- a/.ci/monolithic-linux.sh
+++ b/.ci/monolithic-linux.sh
@@ -38,11 +38,25 @@ function at-exit {
   # If building fails there will be no results files.
   shopt -s nullglob
   
-  python3 "${MONOREPO_ROOT}"/.ci/generate_test_report_github.py ":penguin: Linux x64 Test Results" \
-    $retcode "${BUILD_DIR}"/test-results.*.xml >> $GITHUB_STEP_SUMMARY
+  if [[ "$GITHUB_STEP_SUMMARY" != "" ]]; then
+    python3 "${MONOREPO_ROOT}"/.ci/generate_test_report_github.py ":penguin: Linux x64 Test Results" \
+      $retcode "${BUILD_DIR}"/test-results.*.xml >> $GITHUB_STEP_SUMMARY
+  fi
 }
 trap at-exit EXIT
 
+function start-group {
+  groupname=$1
+  if [[ "$GITHUB_ACTIONS" != "" ]]; then
+    echo "::endgroup"
+    echo "::group::$groupname"
+  elif [[ "$POSTCOMMIT_CI" != "" ]]; then
+    echo "@@@$STEP@@@"
+  else
+    echo "Starting $groupname"
+  fi
+}
+
 projects="${1}"
 targets="${2}"
 runtimes="${3}"
@@ -52,7 +66,7 @@ enable_cir="${6}"
 
 lit_args="-v --xunit-xml-output ${BUILD_DIR}/test-results.xml --use-unique-output-file-name --timeout=1200 --time-tests"
 
-echo "::group::cmake"
+start-group "CMake"
 export PIP_BREAK_SYSTEM_PACKAGES=1
 pip install -q -r "${MONOREPO_ROOT}"/.ci/all_requirements.txt
 
@@ -83,49 +97,39 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D LLDB_ENFORCE_STRICT_TEST_REQUIREMENTS=ON \
       -D CMAKE_INSTALL_PREFIX="${INSTALL_DIR}"
 
-echo "::endgroup::"
-echo "::group::ninja"
+start-group "ninja"
 
 # Targets are not escaped as they are passed as separate arguments.
 ninja -C "${BUILD_DIR}" -k 0 ${targets}
 
-echo "::endgroup::"
-
 if [[ "${runtime_targets}" != "" ]]; then
-  echo "::group::ninja runtimes"
+  start-group "ninja Runtimes"
 
   ninja -C "${BUILD_DIR}" ${runtime_targets}
-
-  echo "::endgroup::"
 fi
 
 # Compiling runtimes with just-built Clang and running their tests
 # as an additional testing for Clang.
 if [[ "${runtime_targets_needs_reconfig}" != "" ]]; then
-  echo "::group::cmake runtimes C++26"
+  start-group "CMake Runtimes C++26"
 
   cmake \
     -D LIBCXX_TEST_PARAMS="std=c++26" \
     -D LIBCXXABI_TEST_PARAMS="std=c++26" \
     "${BUILD_DIR}"
 
-  echo "::endgroup::"
-  echo "::group::ninja runtimes C++26"
+  start-group "ninja Runtimes C++26"
 
   ninja -C "${BUILD_DIR}" ${runtime_targets_needs_reconfig}
 
-  echo "::endgroup::"
-  echo "::group::cmake runtimes clang modules"
+  start-group "CMake Runtimes Clang Modules"
 
   cmake \
     -D LIBCXX_TEST_PARAMS="enable_modules=clang" \
     -D LIBCXXABI_TEST_PARAMS="enable_modules=clang" \
     "${BUILD_DIR}"
 
-  echo "::endgroup::"
-  echo "::group::ninja runtimes clang modules"
+  start-group "ninja Runtimes Clang Modules"
 
   ninja -C "${BUILD_DIR}" ${runtime_targets_needs_reconfig}
-
-  echo "::endgroup::"
 fi
diff --git a/.ci/monolithic-windows.sh b/.ci/monolithic-windows.sh
index 50a741677d734..da150829783df 100755
--- a/.ci/monolithic-windows.sh
+++ b/.ci/monolithic-windows.sh
@@ -32,16 +32,30 @@ function at-exit {
 
   # If building fails there will be no results files.
   shopt -s nullglob
-    
-  python "${MONOREPO_ROOT}"/.ci/generate_test_report_github.py ":window: Windows x64 Test Results" \
-    $retcode "${BUILD_DIR}"/test-results.*.xml >> $GITHUB_STEP_SUMMARY
+
+  if [[ "$GITHUB_STEP_SUMMARY" != "" ]]; then
+    python "${MONOREPO_ROOT}"/.ci/generate_test_report_github.py ":window: Windows x64 Test Results" \
+      $retcode "${BUILD_DIR}"/test-results.*.xml >> $GITHUB_STEP_SUMMARY
+  fi
 }
 trap at-exit EXIT
 
+function start-group {
+  groupname=$1
+  if [[ "$GITHUB_ACTIONS" != "" ]]; then
+    echo "::endgroup"
+    echo "::group::$groupname"
+  elif [[ "$POSTCOMMIT_CI" != "" ]]; then
+    echo "@@@$STEP@@@"
+  else
+    echo "Starting $groupname"
+  fi
+}
+
 projects="${1}"
 targets="${2}"
 
-echo "::group::cmake"
+start-group "CMake"
 pip install -q -r "${MONOREPO_ROOT}"/.ci/all_requirements.txt
 
 export CC=cl
@@ -71,10 +85,7 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D CMAKE_MODULE_LINKER_FLAGS="/MANIFEST:NO" \
       -D CMAKE_SHARED_LINKER_FLAGS="/MANIFEST:NO"
 
-echo "::endgroup::"
-echo "::group::ninja"
+start-group "ninja"
 
 # Targets are not escaped as they are passed as separate arguments.
 ninja -C "${BUILD_DIR}" -k 0 ${targets}
-
-echo "::endgroup"