Merge commit 'bd2d456a7c66' from apple/stable/20200714 into swift/main

Author: git apple-llvm automerger

clang/lib/Basic/Targets/OSTargets.h

@@ -154,7 +154,8 @@ class LLVM_LIBRARY_VISIBILITY DarwinTargetInfo : public OSTargetInfo<Target> {
       MinVersion = llvm::VersionTuple(5U);
       break;
     default:
-      llvm_unreachable("Unexpected OS");
+      // Conservatively return 8 bytes if OS is unknown.
+      return 64;
     }
 
     unsigned Major, Minor, Micro;

clang/test/SemaCXX/warn-overaligned-type-thrown.cpp

@@ -3,6 +3,7 @@
 // RUN: %clang_cc1 -triple arm64-apple-tvos10 -verify -fsyntax-only -std=c++11 -fcxx-exceptions -fexceptions -DUNDERALIGNED %s
 // RUN: %clang_cc1 -triple arm64-apple-watchos4 -verify -fsyntax-only -std=c++11 -fcxx-exceptions -fexceptions -DUNDERALIGNED %s
 // RUN: %clang_cc1 -triple arm-linux-gnueabi -verify -fsyntax-only -std=c++11 -fcxx-exceptions -fexceptions  -DUNDERALIGNED %s
+// RUN: %clang_cc1 -triple thumbv7em-apple-unknown-macho -verify -fsyntax-only -std=c++11 -fcxx-exceptions -fexceptions -DUNDERALIGNED %s
 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.14 -verify -fsyntax-only -std=c++11 -fcxx-exceptions -fexceptions %s
 // RUN: %clang_cc1 -triple arm64-apple-ios12 -verify -fsyntax-only -std=c++11 -fcxx-exceptions -fexceptions %s
 // RUN: %clang_cc1 -triple arm64-apple-tvos12 -verify -fsyntax-only -std=c++11 -fcxx-exceptions -fexceptions %s

llvm/docs/ReleaseNotes.rst

@@ -85,6 +85,22 @@ Changes to building LLVM
   Python 3 as Python 2 has been end-of-life'd by the Python Software
   Foundation.
 
+Changes to the JIT infrastructure
+---------------------------------
+
+* LLJIT now supports execution of static inits / deinits via the
+  LLJIT::initialize and LLJIT::deinitialize methods
+
+* Static libraries can now be added to a JITDylib using the
+  StaticLibraryDefinitionGenerator class
+
+* A C API has been added for OrcV2 (llvm-project/llvm/include/llvm-c/Orc.h)
+
+* Several OrcV2 example projects have been added to
+  llvm-project/llvm/examples/OrcV2Examples
+
+* Many bug fixes and API improvements
+
 Changes to the AArch64 Backend
 ------------------------------
 
@@ -162,24 +178,33 @@ Optimization:
 Codegen:
 
 * POWER10 support
-* Added PC Relative addressing
-* Added __int128 vector bool support
+
+  * Added PC Relative addressing
+  * Added __int128 vector bool support
+
 * Security enhancement via probe-stack attribute support to protect against stack clash
 * Floating point support enhancements
-* Improved half precision and quad precision support, including GLIBC
-* constrained FP operation support for arithmetic/rounding/max/min
-* cleaning up fast math flags checks in DAGCombine, Legalizer, and Lowering
+
+  * Improved half precision and quad precision support, including GLIBC
+  * constrained FP operation support for arithmetic/rounding/max/min
+  * cleaning up fast math flags checks in DAGCombine, Legalizer, and Lowering
+
 * Performance improvements from instruction exploitation, especially for vector permute on LE
 * Scheduling enhancements
-* Added MacroFusion for POWER8
-* Added post-ra heuristics for POWER9
+
+  * Added MacroFusion for POWER8
+  * Added post-ra heuristics for POWER9
+
 * Target dependent passes tuning
-* Updated LoopStrengthReduce to use instruction number as first priority
-* Enhanced MachineCombiner to expose more ILP
+
+  * Updated LoopStrengthReduce to use instruction number as first priority
+  * Enhanced MachineCombiner to expose more ILP
+
 * Code quality and maintenance enhancements
-* Enabled more machine verification passes
-* Added ability to parse and emit additional extended mnemonics
-* Numerous bug fixes
+
+  * Enabled more machine verification passes
+  * Added ability to parse and emit additional extended mnemonics
+  * Numerous bug fixes
 
 AIX Support Improvements: