Merge branch 'tracking' of https://github.com/abhishek-kaushik22/llvm-project into tracking

Author: abhishek-kaushik22

.ci/compute_projects.py

@@ -19,6 +19,7 @@
 PROJECT_DEPENDENCIES = {
     "llvm": set(),
     "clang": {"llvm"},
+    "CIR": {"clang", "mlir"},
     "bolt": {"clang", "lld", "llvm"},
     "clang-tools-extra": {"clang", "llvm"},
     "compiler-rt": {"clang", "lld"},
@@ -52,8 +53,20 @@
     "clang": {"clang-tools-extra", "cross-project-tests"},
     "mlir": {"flang"},
     # Test everything if ci scripts are changed.
-    # FIXME: Figure out what is missing and add here.
-    ".ci": {"llvm", "clang", "lld", "lldb"},
+    ".ci": {
+        "llvm",
+        "clang",
+        "CIR",
+        "lld",
+        "lldb",
+        "bolt",
+        "clang-tools-extra",
+        "mlir",
+        "polly",
+        "flang",
+        "libclc",
+        "openmp",
+    },
 }
 
 # This mapping describes runtimes that should be enabled for a specific project,
@@ -66,6 +79,8 @@
 DEPENDENT_RUNTIMES_TO_TEST = {
     "clang": {"compiler-rt"},
     "clang-tools-extra": {"libc"},
+    "libc": {"libc"},
+    ".ci": {"compiler-rt", "libc"},
 }
 DEPENDENT_RUNTIMES_TO_TEST_NEEDS_RECONFIG = {
     "llvm": {"libcxx", "libcxxabi", "libunwind"},
@@ -115,6 +130,7 @@
     "lldb": "check-lldb",
     "llvm": "check-llvm",
     "clang": "check-clang",
+    "CIR": "check-clang-cir",
     "bolt": "check-bolt",
     "lld": "check-lld",
     "flang": "check-flang",
@@ -128,20 +144,35 @@
 
 RUNTIMES = {"libcxx", "libcxxabi", "libunwind", "compiler-rt", "libc"}
 
+# Meta projects are projects that need explicit handling but do not reside
+# in their own top level folder. To add a meta project, the start of the path
+# for the metaproject should be mapped to the name of the project below.
+# Multiple paths can map to the same metaproject.
+META_PROJECTS = {
+    ("clang", "lib", "CIR"): "CIR",
+    ("clang", "test", "CIR"): "CIR",
+    ("clang", "include", "clang", "CIR"): "CIR",
+    ("*", "docs"): "docs",
+    ("llvm", "utils", "gn"): "gn",
+    (".github", "workflows", "premerge.yaml"): ".ci",
+    ("third-party",): ".ci",
+}
+
+# Projects that should not run any tests. These need to be metaprojects.
+SKIP_PROJECTS = ["docs", "gn"]
+
 
 def _add_dependencies(projects: Set[str], runtimes: Set[str]) -> Set[str]:
     projects_with_dependents = set(projects)
     current_projects_count = 0
     while current_projects_count != len(projects_with_dependents):
         current_projects_count = len(projects_with_dependents)
         for project in list(projects_with_dependents):
-            if project not in PROJECT_DEPENDENCIES:
-                continue
-            projects_with_dependents.update(PROJECT_DEPENDENCIES[project])
+            if project in PROJECT_DEPENDENCIES:
+                projects_with_dependents.update(PROJECT_DEPENDENCIES[project])
     for runtime in runtimes:
-        if runtime not in PROJECT_DEPENDENCIES:
-            continue
-        projects_with_dependents.update(PROJECT_DEPENDENCIES[runtime])
+        if runtime in PROJECT_DEPENDENCIES:
+            projects_with_dependents.update(PROJECT_DEPENDENCIES[runtime])
     return projects_with_dependents
 
 
@@ -187,18 +218,16 @@ def _compute_projects_to_build(
 def _compute_project_check_targets(projects_to_test: Set[str]) -> Set[str]:
     check_targets = set()
     for project_to_test in projects_to_test:
-        if project_to_test not in PROJECT_CHECK_TARGETS:
-            continue
-        check_targets.add(PROJECT_CHECK_TARGETS[project_to_test])
+        if project_to_test in PROJECT_CHECK_TARGETS:
+            check_targets.add(PROJECT_CHECK_TARGETS[project_to_test])
     return check_targets
 
 
 def _compute_runtimes_to_test(modified_projects: Set[str], platform: str) -> Set[str]:
     runtimes_to_test = set()
     for modified_project in modified_projects:
-        if modified_project not in DEPENDENT_RUNTIMES_TO_TEST:
-            continue
-        runtimes_to_test.update(DEPENDENT_RUNTIMES_TO_TEST[modified_project])
+        if modified_project in DEPENDENT_RUNTIMES_TO_TEST:
+            runtimes_to_test.update(DEPENDENT_RUNTIMES_TO_TEST[modified_project])
     return _exclude_projects(runtimes_to_test, platform)
 
 
@@ -207,11 +236,10 @@ def _compute_runtimes_to_test_needs_reconfig(
 ) -> Set[str]:
     runtimes_to_test = set()
     for modified_project in modified_projects:
-        if modified_project not in DEPENDENT_RUNTIMES_TO_TEST_NEEDS_RECONFIG:
-            continue
-        runtimes_to_test.update(
-            DEPENDENT_RUNTIMES_TO_TEST_NEEDS_RECONFIG[modified_project]
-        )
+        if modified_project in DEPENDENT_RUNTIMES_TO_TEST_NEEDS_RECONFIG:
+            runtimes_to_test.update(
+                DEPENDENT_RUNTIMES_TO_TEST_NEEDS_RECONFIG[modified_project]
+            )
     return _exclude_projects(runtimes_to_test, platform)
 
 
@@ -225,21 +253,34 @@ def _compute_runtimes_to_build(
     return _exclude_projects(runtimes_to_build, platform)
 
 
+def _path_matches(matcher: tuple[str], file_path: tuple[str]) -> bool:
+    if len(file_path) < len(matcher):
+        return False
+    for match_part, file_part in zip(matcher, file_path):
+        if match_part == "*" or file_part == "*":
+            continue
+        if match_part != file_part:
+            return False
+    return True
+
+
+def _get_modified_projects_for_file(modified_file: str) -> Set[str]:
+    modified_projects = set()
+    path_parts = pathlib.Path(modified_file).parts
+    for meta_project_files in META_PROJECTS.keys():
+        if _path_matches(meta_project_files, path_parts):
+            meta_project = META_PROJECTS[meta_project_files]
+            if meta_project in SKIP_PROJECTS:
+                return set()
+            modified_projects.add(meta_project)
+    modified_projects.add(pathlib.Path(modified_file).parts[0])
+    return modified_projects
+
+
 def _get_modified_projects(modified_files: list[str]) -> Set[str]:
     modified_projects = set()
     for modified_file in modified_files:
-        path_parts = pathlib.Path(modified_file).parts
-        # Exclude files in the docs directory. They do not impact an test
-        # targets and there is a separate workflow used for ensuring the
-        # documentation builds.
-        if len(path_parts) > 2 and path_parts[1] == "docs":
-            continue
-        # Exclude files for the gn build. We do not test it within premerge
-        # and changes occur often enough that they otherwise take up
-        # capacity.
-        if len(path_parts) > 3 and path_parts[:3] == ("llvm", "utils", "gn"):
-            continue
-        modified_projects.add(pathlib.Path(modified_file).parts[0])
+        modified_projects.update(_get_modified_projects_for_file(modified_file))
     return modified_projects
 
 
@@ -259,6 +300,13 @@ def get_env_variables(modified_files: list[str], platform: str) -> Set[str]:
     runtimes_check_targets_needs_reconfig = _compute_project_check_targets(
         runtimes_to_test_needs_reconfig
     )
+
+    # CIR is used as a pseudo-project in this script. It is built as part of the
+    # clang build, but it requires an explicit option to enable. We set that
+    # option here, and remove it from the projects_to_build list.
+    enable_cir = "ON" if "CIR" in projects_to_build else "OFF"
+    projects_to_build.discard("CIR")
+
     # We use a semicolon to separate the projects/runtimes as they get passed
     # to the CMake invocation and thus we need to use the CMake list separator
     # (;). We use spaces to separate the check targets as they end up getting
@@ -271,6 +319,7 @@ def get_env_variables(modified_files: list[str], platform: str) -> Set[str]:
         "runtimes_check_targets_needs_reconfig": " ".join(
             sorted(runtimes_check_targets_needs_reconfig)
         ),
+        "enable_cir": enable_cir,
     }
 
 

.ci/compute_projects_test.py

@@ -1,7 +1,7 @@
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-"""Does some stuff."""
+"""Tests for compute_projects.py"""
 
 import unittest
 
@@ -104,6 +104,10 @@ def test_clang(self):
             env_variables["runtimes_check_targets_needs_reconfig"],
             "check-cxx check-cxxabi check-unwind",
         )
+        self.assertEqual(
+            env_variables["enable_cir"],
+            "OFF",
+        )
 
     def test_clang_windows(self):
         env_variables = compute_projects.get_env_variables(
@@ -126,6 +130,32 @@ def test_clang_windows(self):
             env_variables["runtimes_check_targets_needs_reconfig"],
             "check-cxx check-cxxabi check-unwind",
         )
+        self.assertEqual(env_variables["enable_cir"], "OFF")
+
+    def test_cir(self):
+        env_variables = compute_projects.get_env_variables(
+            ["clang/lib/CIR/CMakeLists.txt"], "Linux"
+        )
+        self.assertEqual(
+            env_variables["projects_to_build"],
+            "clang;clang-tools-extra;lld;llvm;mlir",
+        )
+        self.assertEqual(
+            env_variables["project_check_targets"],
+            "check-clang check-clang-cir check-clang-tools",
+        )
+        self.assertEqual(
+            env_variables["runtimes_to_build"], "compiler-rt;libcxx;libcxxabi;libunwind"
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets"],
+            "check-compiler-rt",
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets_needs_reconfig"],
+            "check-cxx check-cxxabi check-unwind",
+        )
+        self.assertEqual(env_variables["enable_cir"], "ON")
 
     def test_bolt(self):
         env_variables = compute_projects.get_env_variables(
@@ -158,6 +188,7 @@ def test_mlir(self):
         self.assertEqual(env_variables["runtimes_to_build"], "")
         self.assertEqual(env_variables["runtimes_check_targets"], "")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
+        self.assertEqual(env_variables["enable_cir"], "OFF")
 
     def test_flang(self):
         env_variables = compute_projects.get_env_variables(
@@ -168,10 +199,11 @@ def test_flang(self):
         self.assertEqual(env_variables["runtimes_to_build"], "")
         self.assertEqual(env_variables["runtimes_check_targets"], "")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
+        self.assertEqual(env_variables["enable_cir"], "OFF")
 
     def test_invalid_subproject(self):
         env_variables = compute_projects.get_env_variables(
-            ["third-party/benchmark/CMakeLists.txt"], "Linux"
+            ["llvm-libgcc/CMakeLists.txt"], "Linux"
         )
         self.assertEqual(env_variables["projects_to_build"], "")
         self.assertEqual(env_variables["project_check_targets"], "")
@@ -187,7 +219,7 @@ def test_top_level_file(self):
         self.assertEqual(env_variables["runtimes_check_targets"], "")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
 
-    def test_exclude_runtiems_in_projects(self):
+    def test_exclude_libcxx_in_projects(self):
         env_variables = compute_projects.get_env_variables(
             ["libcxx/CMakeLists.txt"], "Linux"
         )
@@ -197,6 +229,16 @@ def test_exclude_runtiems_in_projects(self):
         self.assertEqual(env_variables["runtimes_check_targets"], "")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
 
+    def test_include_libc_in_runtimes(self):
+        env_variables = compute_projects.get_env_variables(
+            ["libc/CMakeLists.txt"], "Linux"
+        )
+        self.assertEqual(env_variables["projects_to_build"], "clang;lld")
+        self.assertEqual(env_variables["project_check_targets"], "")
+        self.assertEqual(env_variables["runtimes_to_build"], "libc")
+        self.assertEqual(env_variables["runtimes_check_targets"], "check-libc")
+        self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
+
     def test_exclude_docs(self):
         env_variables = compute_projects.get_env_variables(
             ["llvm/docs/CIBestPractices.rst"], "Linux"
@@ -221,18 +263,21 @@ def test_ci(self):
         env_variables = compute_projects.get_env_variables(
             [".ci/compute_projects.py"], "Linux"
         )
-        self.assertEqual(env_variables["projects_to_build"], "clang;lld;lldb;llvm")
+        self.assertEqual(
+            env_variables["projects_to_build"],
+            "bolt;clang;clang-tools-extra;flang;libclc;lld;lldb;llvm;mlir;polly",
+        )
         self.assertEqual(
             env_variables["project_check_targets"],
-            "check-clang check-lld check-lldb check-llvm",
+            "check-bolt check-clang check-clang-cir check-clang-tools check-flang check-lld check-lldb check-llvm check-mlir check-polly",
         )
         self.assertEqual(
             env_variables["runtimes_to_build"],
-            "libcxx;libcxxabi;libunwind",
+            "compiler-rt;libc;libcxx;libcxxabi;libunwind",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets"],
-            "",
+            "check-compiler-rt check-libc",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets_needs_reconfig"],
@@ -263,6 +308,66 @@ def test_clang_tools_extra(self):
         self.assertEqual(env_variables["runtimes_check_targets"], "check-libc")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
 
+    def test_premerge_workflow(self):
+        env_variables = compute_projects.get_env_variables(
+            [".github/workflows/premerge.yaml"], "Linux"
+        )
+        self.assertEqual(
+            env_variables["projects_to_build"],
+            "bolt;clang;clang-tools-extra;flang;libclc;lld;lldb;llvm;mlir;polly",
+        )
+        self.assertEqual(
+            env_variables["project_check_targets"],
+            "check-bolt check-clang check-clang-cir check-clang-tools check-flang check-lld check-lldb check-llvm check-mlir check-polly",
+        )
+        self.assertEqual(
+            env_variables["runtimes_to_build"],
+            "compiler-rt;libc;libcxx;libcxxabi;libunwind",
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets"],
+            "check-compiler-rt check-libc",
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets_needs_reconfig"],
+            "check-cxx check-cxxabi check-unwind",
+        )
+
+    def test_other_github_workflow(self):
+        env_variables = compute_projects.get_env_variables(
+            [".github/workflows/docs.yml"], "Linux"
+        )
+        self.assertEqual(env_variables["projects_to_build"], "")
+        self.assertEqual(env_variables["project_check_targets"], "")
+        self.assertEqual(env_variables["runtimes_to_build"], "")
+        self.assertEqual(env_variables["runtimes_check_targets"], "")
+        self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
+
+    def test_third_party_benchmark(self):
+        env_variables = compute_projects.get_env_variables(
+            ["third-party/benchmark/CMakeLists.txt"], "Linux"
+        )
+        self.assertEqual(
+            env_variables["projects_to_build"],
+            "bolt;clang;clang-tools-extra;flang;libclc;lld;lldb;llvm;mlir;polly",
+        )
+        self.assertEqual(
+            env_variables["project_check_targets"],
+            "check-bolt check-clang check-clang-cir check-clang-tools check-flang check-lld check-lldb check-llvm check-mlir check-polly",
+        )
+        self.assertEqual(
+            env_variables["runtimes_to_build"],
+            "compiler-rt;libc;libcxx;libcxxabi;libunwind",
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets"],
+            "check-compiler-rt check-libc",
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets_needs_reconfig"],
+            "check-cxx check-cxxabi check-unwind",
+        )
+
 
 if __name__ == "__main__":
     unittest.main()