Automerge: [CI] Move CI over to new project computation script

This patch migrates the CI over to the new compute_projects.py script
for calculating what projects need to be tested based on a change to
LLVM.

Reviewers: lnihlen, ldionne, tstellar, Endilll, joker-eph, Keenuts

Reviewed By: Keenuts, tstellar

Pull Request: llvm/llvm-project#132642

Author: boomanaiden154

.ci/compute-projects.sh

@@ -52,8 +52,6 @@ modified_dirs=$(echo "$MODIFIED_FILES" | cut -d'/' -f1 | sort -u)
 echo "Directories modified:" >&2
 echo "$modified_dirs" >&2
 
-. ./.ci/compute-projects.sh
-
 # Project specific pipelines.
 
 # If libc++ or one of the runtimes directories changed.
@@ -73,20 +71,16 @@ fi
 # needs while letting them run on the infrastructure provided by LLVM.
 
 # Figure out which projects need to be built on each platform
-all_projects="bolt clang clang-tools-extra compiler-rt cross-project-tests flang libc libclc lld lldb llvm mlir openmp polly pstl"
-modified_projects="$(keep-modified-projects ${all_projects})"
-
-linux_projects_to_test=$(exclude-linux $(compute-projects-to-test 0 ${modified_projects}))
-linux_check_targets=$(check-targets ${linux_projects_to_test} | sort | uniq)
-linux_projects=$(add-dependencies ${linux_projects_to_test} | sort | uniq)
+source <(git diff --name-only origin/${BUILDKITE_PULL_REQUEST_BASE_BRANCH}...HEAD | python3 .ci/compute_projects.py Linux)
+linux_projects=${projects_to_build}
+linux_check_targets=${project_check_targets}
+linux_runtimes=${runtimes_to_build}
+linux_runtime_check_targets=${runtimes_check_targets}
 
-linux_runtimes_to_test=$(compute-runtimes-to-test ${linux_projects_to_test})
-linux_runtime_check_targets=$(check-targets ${linux_runtimes_to_test} | sort | uniq)
-linux_runtimes=$(echo ${linux_runtimes_to_test} | sort | uniq)
+source <(git diff --name-only origin/${BUILDKITE_PULL_REQUEST_BASE_BRANCH}...HEAD | python3 .ci/compute_projects.py Windows)
+windows_projects=${projects_to_build}
+windows_check_targets=${project_check_targets}
 
-windows_projects_to_test=$(exclude-windows $(compute-projects-to-test 1 ${modified_projects}))
-windows_check_targets=$(check-targets ${windows_projects_to_test} | sort | uniq)
-windows_projects=$(add-dependencies ${windows_projects_to_test} | sort | uniq)
 
 # Generate the appropriate pipeline
 if [[ "${linux_projects}" != "" ]]; then