Merge branch 'main' into ckoparkar/153151

* main: (1483 commits)
  [clang] fix error recovery for invalid nested name specifiers (llvm#156772)
  Revert "[lldb] Add count for errors of DWO files in statistics and combine DWO file count functions" (llvm#156777)
  AMDGPU: Add agpr variants of multi-data DS instructions (llvm#156420)
  [libc][NFC] disable localtime on aarch64/baremetal (llvm#156776)
  [win/asan] Improve SharedReAlloc with HEAP_REALLOC_IN_PLACE_ONLY. (llvm#132558)
  [LLDB] Make internal shell the default for running LLDB lit tests. (llvm#156729)
  [lldb][debugserver] Max response size for qSpeedTest (llvm#156099)
  [AMDGPU] Define 1024 VGPRs on gfx1250 (llvm#156765)
  [flang] Check for BIND(C) name conflicts with alternate entries (llvm#156563)
  [RISCV] Add exhausted_gprs_fprs test to calling-conv-half.ll. NFC (llvm#156586)
  [NFC] Remove trailing whitespaces from `clang/include/clang/Basic/AttrDocs.td`
  [lldb] Mark scripted frames as synthetic instead of artificial (llvm#153117)
  [docs] Refine some of the wording in the quality developer policy (llvm#156555)
  [MLIR] Apply clang-tidy fixes for readability-identifier-naming in TransformOps.cpp (NFC)
  [MLIR] Add LDBG() tracing to VectorTransferOpTransforms.cpp (NFC)
  [NFC] Apply clang-format to PPCInstrFutureMMA.td (llvm#156749)
  [libc] implement template functions for localtime (llvm#110363)
  [llvm-objcopy][COFF] Update .symidx values after stripping (llvm#153322)
  Add documentation on debugging LLVM.
  [lldb] Add count for errors of DWO files in statistics and combine DWO file count functions (llvm#155023)
  ...

Author: ckoparkar

.ci/all_requirements.txt

@@ -0,0 +1,80 @@
+# 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
+"""Caches .lit_test_times.txt files between premerge invocations.
+
+.lit_test_times.txt files are used by lit to order tests to best take advantage
+of parallelism. Having them around and up to date can result in a ~15%
+improvement in test times. This script downloading cached test time files and
+uploading new versions to the GCS buckets used for caching.
+"""
+
+import sys
+import os
+import logging
+import multiprocessing.pool
+import pathlib
+import glob
+
+from google.cloud import storage
+
+GCS_PARALLELISM = 100
+
+
+def _maybe_upload_timing_file(bucket, timing_file_path):
+    if os.path.exists(timing_file_path):
+        timing_file_blob = bucket.blob("lit_timing/" + timing_file_path)
+        timing_file_blob.upload_from_filename(timing_file_path)
+
+
+def upload_timing_files(storage_client, bucket_name: str):
+    bucket = storage_client.bucket(bucket_name)
+    with multiprocessing.pool.ThreadPool(GCS_PARALLELISM) as thread_pool:
+        futures = []
+        for timing_file_path in glob.glob("**/.lit_test_times.txt", recursive=True):
+            futures.append(
+                thread_pool.apply_async(
+                    _maybe_upload_timing_file, (bucket, timing_file_path)
+                )
+            )
+        for future in futures:
+            future.get()
+    print("Done uploading")
+
+
+def _maybe_download_timing_file(blob):
+    file_name = blob.name.removeprefix("lit_timing/")
+    pathlib.Path(os.path.dirname(file_name)).mkdir(parents=True, exist_ok=True)
+    blob.download_to_filename(file_name)
+
+
+def download_timing_files(storage_client, bucket_name: str):
+    bucket = storage_client.bucket(bucket_name)
+    blobs = bucket.list_blobs(prefix="lit_timing")
+    with multiprocessing.pool.ThreadPool(GCS_PARALLELISM) as thread_pool:
+        futures = []
+        for timing_file_blob in blobs:
+            futures.append(
+                thread_pool.apply_async(
+                    _maybe_download_timing_file, (timing_file_blob,)
+                )
+            )
+        for future in futures:
+            future.get()
+    print("Done downloading")
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        logging.fatal("Expected usage is cache_lit_timing_files.py <upload/download>")
+        sys.exit(1)
+    action = sys.argv[1]
+    storage_client = storage.Client()
+    bucket_name = os.environ["CACHE_GCS_BUCKET"]
+    if action == "download":
+        download_timing_files(storage_client, bucket_name)
+    elif action == "upload":
+        upload_timing_files(storage_client, bucket_name)
+    else:
+        logging.fatal("Expected usage is cache_lit_timing_files.py <upload/download>")
+        sys.exit(1)

.ci/cache_lit_timing_files.py

@@ -26,6 +26,7 @@
     "libc": {"clang", "lld"},
     "openmp": {"clang", "lld"},
     "flang": {"llvm", "clang"},
+    "flang-rt": {"flang"},
     "lldb": {"llvm", "clang"},
     "libclc": {"llvm", "clang"},
     "lld": {"llvm"},
@@ -80,7 +81,9 @@
     "clang-tools-extra": {"libc"},
     "libc": {"libc"},
     "compiler-rt": {"compiler-rt"},
-    ".ci": {"compiler-rt", "libc"},
+    "flang": {"flang-rt"},
+    "flang-rt": {"flang-rt"},
+    ".ci": {"compiler-rt", "libc", "flang-rt"},
 }
 DEPENDENT_RUNTIMES_TO_TEST_NEEDS_RECONFIG = {
     "llvm": {"libcxx", "libcxxabi", "libunwind"},
@@ -95,14 +98,14 @@
 
 EXCLUDE_WINDOWS = {
     "cross-project-tests",  # TODO(issues/132797): Tests are failing.
-    "compiler-rt",  # TODO(issues/132798): Tests take excessive time.
     "openmp",  # TODO(issues/132799): Does not detect perl installation.
     "libc",  # No Windows Support.
     "lldb",  # TODO(issues/132800): Needs environment setup.
     "bolt",  # No Windows Support.
     "libcxx",
     "libcxxabi",
     "libunwind",
+    "flang-rt",
 }
 
 # These are projects that we should test if the project itself is changed but
@@ -140,6 +143,7 @@
     "bolt": "check-bolt",
     "lld": "check-lld",
     "flang": "check-flang",
+    "flang-rt": "check-flang-rt",
     "libc": "check-libc",
     "lld": "check-lld",
     "lldb": "check-lldb",
@@ -148,7 +152,7 @@
     "polly": "check-polly",
 }
 
-RUNTIMES = {"libcxx", "libcxxabi", "libunwind", "compiler-rt", "libc"}
+RUNTIMES = {"libcxx", "libcxxabi", "libunwind", "compiler-rt", "libc", "flang-rt"}
 
 # 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
@@ -333,6 +337,7 @@ def get_env_variables(modified_files: list[str], platform: str) -> Set[str]:
     current_platform = platform.system()
     if len(sys.argv) == 2:
         current_platform = sys.argv[1]
-    env_variables = get_env_variables(sys.stdin.readlines(), current_platform)
+    changed_files = [line.strip() for line in sys.stdin.readlines()]
+    env_variables = get_env_variables(changed_files, current_platform)
     for env_variable in env_variables:
         print(f"{env_variable}='{env_variables[env_variable]}'")

.ci/compute_projects.py

@@ -110,15 +110,15 @@ def test_clang_windows(self):
             ["clang/CMakeLists.txt"], "Windows"
         )
         self.assertEqual(
-            env_variables["projects_to_build"], "clang;clang-tools-extra;llvm"
+            env_variables["projects_to_build"], "clang;clang-tools-extra;lld;llvm"
         )
         self.assertEqual(
             env_variables["project_check_targets"], "check-clang check-clang-tools"
         )
-        self.assertEqual(env_variables["runtimes_to_build"], "")
+        self.assertEqual(env_variables["runtimes_to_build"], "compiler-rt")
         self.assertEqual(
             env_variables["runtimes_check_targets"],
-            "",
+            "check-compiler-rt",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets_needs_reconfig"],
@@ -216,8 +216,8 @@ def test_flang(self):
         )
         self.assertEqual(env_variables["projects_to_build"], "clang;flang;llvm")
         self.assertEqual(env_variables["project_check_targets"], "check-flang")
-        self.assertEqual(env_variables["runtimes_to_build"], "")
-        self.assertEqual(env_variables["runtimes_check_targets"], "")
+        self.assertEqual(env_variables["runtimes_to_build"], "flang-rt")
+        self.assertEqual(env_variables["runtimes_check_targets"], "check-flang-rt")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
         self.assertEqual(env_variables["enable_cir"], "OFF")
 
@@ -293,11 +293,11 @@ def test_ci(self):
         )
         self.assertEqual(
             env_variables["runtimes_to_build"],
-            "compiler-rt;libc;libcxx;libcxxabi;libunwind",
+            "compiler-rt;flang-rt;libc;libcxx;libcxxabi;libunwind",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets"],
-            "check-compiler-rt check-libc",
+            "check-compiler-rt check-flang-rt check-libc",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets_needs_reconfig"],
@@ -318,11 +318,11 @@ def test_windows_ci(self):
         )
         self.assertEqual(
             env_variables["runtimes_to_build"],
-            "",
+            "compiler-rt",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets"],
-            "",
+            "check-compiler-rt",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets_needs_reconfig"],
@@ -367,11 +367,11 @@ def test_premerge_workflow(self):
         )
         self.assertEqual(
             env_variables["runtimes_to_build"],
-            "compiler-rt;libc;libcxx;libcxxabi;libunwind",
+            "compiler-rt;flang-rt;libc;libcxx;libcxxabi;libunwind",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets"],
-            "check-compiler-rt check-libc",
+            "check-compiler-rt check-flang-rt check-libc",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets_needs_reconfig"],
@@ -402,11 +402,11 @@ def test_third_party_benchmark(self):
         )
         self.assertEqual(
             env_variables["runtimes_to_build"],
-            "compiler-rt;libc;libcxx;libcxxabi;libunwind",
+            "compiler-rt;flang-rt;libc;libcxx;libcxxabi;libunwind",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets"],
-            "check-compiler-rt check-libc",
+            "check-compiler-rt check-flang-rt check-libc",
         )
         self.assertEqual(
             env_variables["runtimes_check_targets_needs_reconfig"],

.ci/compute_projects_test.py

@@ -27,6 +27,13 @@ def _parse_ninja_log(ninja_log: list[str]) -> list[tuple[str, str]]:
             # We hit the end of the log without finding a build failure, go to
             # the next log.
             return failures
+        # If we are doing a build with LLVM_ENABLE_RUNTIMES, we can have nested
+        # ninja invocations. The sub-ninja will print that a subcommand failed,
+        # and then the outer ninja will list the command that failed. We should
+        # ignore the outer failure.
+        if ninja_log[index - 1].startswith("ninja: build stopped:"):
+            index += 1
+            continue
         # We are trying to parse cases like the following:
         #
         # [4/5] test/4.stamp

.ci/generate_test_report_lib.py

@@ -126,6 +126,39 @@ def test_ninja_log_multiple_failures(self):
             ),
         )
 
+    # Test that we can correctly handle the runtimes build. the LLVM runtimes
+    # build will involve ninja invoking more ninja processes within the
+    # runtimes directory. This means that we see two failures for a failure in
+    # the runtimes build: one from the inner ninja containing the actual action
+    # that failed, and one for the sub ninja invocation that failed.
+    def test_ninja_log_runtimes_failure(self):
+        failures = generate_test_report_lib.find_failure_in_ninja_logs(
+            [
+                [
+                    "[1/5] test/1.stamp",
+                    "[2/5] test/2.stamp",
+                    "FAILED: touch test/2.stamp",
+                    "Wow! This system is really broken!",
+                    "ninja: build stopped: subcommand failed.",
+                    "FAILED: running check-runtime failed.",
+                    "<some random command>",
+                    "ninja: build stopped: subcommand failed.",
+                ]
+            ]
+        )
+        self.assertEqual(len(failures), 1)
+        self.assertEqual(
+            failures[0],
+            (
+                "test/2.stamp",
+                dedent(
+                    """\
+                    FAILED: touch test/2.stamp
+                    Wow! This system is really broken!"""
+                ),
+            ),
+        )
+
     def test_title_only(self):
         self.assertEqual(
             generate_test_report_lib.generate_report("Foo", 0, [], []),