merge main into amd-staging (llvm#4408)

Author: z1-cciauto

.ci/all_requirements.txt

@@ -194,6 +194,10 @@ ml-dtypes==0.5.1 ; python_version < "3.13" \
     --hash=sha256:d13755f8e8445b3870114e5b6240facaa7cb0c3361e54beba3e07fa912a6e12b \
     --hash=sha256:fd918d4e6a4e0c110e2e05be7a7814d10dc1b95872accbf6512b80a109b71ae1
     # via -r mlir/python/requirements.txt
+nanobind==2.9.2 \
+    --hash=sha256:c37957ffd5eac7eda349cff3622ecd32e5ee1244ecc912c99b5bc8188bafd16e \
+    --hash=sha256:e7608472de99d375759814cab3e2c94aba3f9ec80e62cfef8ced495ca5c27d6e
+    # via -r mlir/python/requirements.txt
 numpy==2.0.2 \
     --hash=sha256:0123ffdaa88fa4ab64835dcbde75dcdf89c453c922f18dced6e27c90d1d0ec5a \
     --hash=sha256:11a76c372d1d37437857280aa142086476136a8c0f373b2e648ab2c8f18fb195 \
@@ -295,6 +299,10 @@ pyasn1-modules==0.4.2 \
     --hash=sha256:29253a9207ce32b64c3ac6600edc75368f98473906e8fd1043bd6b5b1de2c14a \
     --hash=sha256:677091de870a80aae844b1ca6134f54652fa2c8c5a52aa396440ac3106e941e6
     # via google-auth
+pybind11==2.13.6 \
+    --hash=sha256:237c41e29157b962835d356b370ededd57594a26d5894a795960f0047cb5caf5 \
+    --hash=sha256:ba6af10348c12b24e92fa086b39cfba0eff619b61ac77c406167d813b096d39a
+    # via -r mlir/python/requirements.txt
 pyyaml==6.0.1 \
     --hash=sha256:04ac92ad1925b2cff1db0cfebffb6ffc43457495c9b3c39d3fcae417d7125dc5 \
     --hash=sha256:062582fca9fabdd2c8b54a3ef1c978d786e0f6b3a1510e0ac93ef59e0ddae2bc \

.ci/cache_lit_timing_files.py

@@ -17,6 +17,7 @@
 import glob
 
 from google.cloud import storage
+from google.api_core import exceptions
 
 GCS_PARALLELISM = 100
 
@@ -50,7 +51,14 @@ def _maybe_download_timing_file(blob):
 
 def download_timing_files(storage_client, bucket_name: str):
     bucket = storage_client.bucket(bucket_name)
-    blobs = bucket.list_blobs(prefix="lit_timing")
+    try:
+        blobs = bucket.list_blobs(prefix="lit_timing")
+    except exceptions.ClientError as client_error:
+        print(
+            "::warning file=cache_lit_timing_files.py::Failed to list blobs "
+            "in bucket."
+        )
+        sys.exit(0)
     with multiprocessing.pool.ThreadPool(GCS_PARALLELISM) as thread_pool:
         futures = []
         for timing_file_blob in blobs:
@@ -60,7 +68,13 @@ def download_timing_files(storage_client, bucket_name: str):
                 )
             )
         for future in futures:
-            future.get()
+            future.wait()
+            if not future.successful():
+                print(
+                    "::warning file=cache_lit_timing_files.py::Failed to "
+                    "download lit timing file."
+                )
+                continue
     print("Done downloading")
 
 

clang/docs/ClangOffloadPackager.rst

@@ -126,6 +126,8 @@ AST Dumping Potentially Breaking Changes
 - Pretty-printing of templates with inherited (i.e. specified in a previous
   redeclaration) default arguments has been fixed.
 
+- Default arguments of template template parameters are pretty-printed now.
+
 Clang Frontend Potentially Breaking Changes
 -------------------------------------------
 - Members of anonymous unions/structs are now injected as ``IndirectFieldDecl``

clang/docs/ReleaseNotes.rst

@@ -29,12 +29,18 @@
 namespace clang::lifetimes {
 
 /// Enum to track the confidence level of a potential error.
-enum class Confidence {
+enum class Confidence : uint8_t {
   None,
   Maybe,   // Reported as a potential error (-Wlifetime-safety-strict)
   Definite // Reported as a definite error (-Wlifetime-safety-permissive)
 };
 
+enum class LivenessKind : uint8_t {
+  Dead,  // Not alive
+  Maybe, // Live on some path but not all paths (may-be-live)
+  Must   // Live on all paths (must-be-live)
+};
+
 class LifetimeSafetyReporter {
 public:
   LifetimeSafetyReporter() = default;
@@ -55,6 +61,7 @@ class Fact;
 class FactManager;
 class LoanPropagationAnalysis;
 class ExpiredLoansAnalysis;
+class LiveOriginAnalysis;
 struct LifetimeFactory;
 
 /// A generic, type-safe wrapper for an ID, distinguished by its `Tag` type.
@@ -89,6 +96,7 @@ inline llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, OriginID ID) {
 // TODO(opt): Consider using a bitset to represent the set of loans.
 using LoanSet = llvm::ImmutableSet<LoanID>;
 using OriginSet = llvm::ImmutableSet<OriginID>;
+using OriginLoanMap = llvm::ImmutableMap<OriginID, LoanSet>;
 
 /// A `ProgramPoint` identifies a location in the CFG by pointing to a specific
 /// `Fact`. identified by a lifetime-related event (`Fact`).
@@ -110,8 +118,16 @@ class LifetimeSafetyAnalysis {
   /// Returns the set of loans an origin holds at a specific program point.
   LoanSet getLoansAtPoint(OriginID OID, ProgramPoint PP) const;
 
-  /// Returns the set of loans that have expired at a specific program point.
-  std::vector<LoanID> getExpiredLoansAtPoint(ProgramPoint PP) const;
+  /// Returns the set of origins that are live at a specific program point,
+  /// along with the confidence level of their liveness.
+  ///
+  /// An origin is considered live if there are potential future uses of that
+  /// origin after the given program point. The confidence level indicates
+  /// whether the origin is definitely live (Definite) due to being domintated
+  /// by a set of uses or only possibly live (Maybe) only on some but not all
+  /// control flow paths.
+  std::vector<std::pair<OriginID, LivenessKind>>
+  getLiveOriginsAtPoint(ProgramPoint PP) const;
 
   /// Finds the OriginID for a given declaration.
   /// Returns a null optional if not found.
@@ -138,7 +154,7 @@ class LifetimeSafetyAnalysis {
   std::unique_ptr<LifetimeFactory> Factory;
   std::unique_ptr<FactManager> FactMgr;
   std::unique_ptr<LoanPropagationAnalysis> LoanPropagation;
-  std::unique_ptr<ExpiredLoansAnalysis> ExpiredLoans;
+  std::unique_ptr<LiveOriginAnalysis> LiveOrigins;
 };
 } // namespace internal
 } // namespace clang::lifetimes

clang/include/clang/Analysis/Analyses/LifetimeSafety.h

@@ -195,6 +195,9 @@ SANITIZER_GROUP("bounds", Bounds, ArrayBounds | LocalBounds)
 // Scudo hardened allocator
 SANITIZER("scudo", Scudo)
 
+// AllocToken
+SANITIZER("alloc-token", AllocToken)
+
 // Magic group, containing all sanitizers. For example, "-fno-sanitize=all"
 // can be used to disable all the sanitizers.
 SANITIZER_GROUP("all", All, ~SanitizerMask())