Merge branch 'release/18.x' into release/18.x

clang/docs/ReleaseNotes.rst

@@ -304,6 +304,10 @@ Non-comprehensive list of changes in this release
 
 * The version of Unicode used by Clang (primarily to parse identifiers) has been updated to 15.1.
 
+* Clang now defines macro ``__LLVM_INSTR_PROFILE_GENERATE`` when compiling with
+  PGO instrumentation profile generation, and ``__LLVM_INSTR_PROFILE_USE`` when
+  compiling with PGO profile use.
+
 New Compiler Flags
 ------------------
 
@@ -344,6 +348,8 @@ New Compiler Flags
   attribute the replaceable global new and delete operators behave normally
   (like other functions) with respect to visibility attributes, pragmas and
   options (e.g ``--fvisibility=``).
+* Full register names can be used when printing assembly via ``-mregnames``.
+  This option now matches the one used by GCC.
 
 Deprecated Compiler Flags
 -------------------------
@@ -363,6 +369,7 @@ Modified Compiler Flags
 * ``-fvisibility-global-new-delete-hidden`` is now a deprecated spelling of
   ``-fvisibility-global-new-delete=force-hidden`` (``-fvisibility-global-new-delete=``
   is new in this release).
+* ``-fprofile-update`` is enabled for ``-fprofile-generate``.
 
 Removed Compiler Flags
 -------------------------
@@ -860,6 +867,9 @@ Bug Fixes in This Version
   Fixes (`#78290 <https://github.com/llvm/llvm-project/issues/78290>`_)
 - Fixed assertion failure with deleted overloaded unary operators.
   Fixes (`#78314 <https://github.com/llvm/llvm-project/issues/78314>`_)
+- The XCOFF object file format does not support aliases to symbols having common
+  linkage. Clang now diagnoses the use of an alias for a common symbol when
+  compiling for AIX.
 
 - Clang now doesn't produce false-positive warning `-Wconstant-logical-operand`
   for logical operators in C23.
@@ -1261,6 +1271,16 @@ CUDA Support
 - Clang now supports CUDA SDK up to 12.3
 - Added support for sm_90a
 
+PowerPC Support
+^^^^^^^^^^^^^^^
+
+- Added ``nmmintrin.h`` to intrinsics headers.
+- Added ``__builtin_ppc_fence`` as barrier of code motion, and
+  ``__builtin_ppc_mffsl`` for corresponding instruction.
+- Supported ``__attribute__((target("tune=cpu")))``.
+- Emit ``float-abi`` module flag on 64-bit ELFv2 PowerPC targets if
+  ``long double`` type is used in current module.
+
 AIX Support
 ^^^^^^^^^^^
 
@@ -1269,6 +1289,10 @@ AIX Support
   base is encoded as an immediate operand.
   This access sequence is not used for TLS variables larger than 32KB, and is
   currently only supported on 64-bit mode.
+- Inline assembler supports VSR register in pure digits.
+- Enabled ThinLTO support. Requires AIX 7.2 TL5 SP7 or newer, or AIX 7.3 TL2
+  or newer. Similar to the LTO support on AIX, ThinLTO is implemented with
+  the libLTO.so plugin.
 
 WebAssembly Support
 ^^^^^^^^^^^^^^^^^^^
@@ -1332,6 +1356,8 @@ libclang
 - Exposed arguments of ``clang::annotate``.
 - ``clang::getCursorKindForDecl`` now recognizes linkage specifications such as
   ``extern "C"`` and reports them as ``CXCursor_LinkageSpec``.
+- Changed the libclang library on AIX to export only the necessary symbols to
+  prevent issues of resolving to the wrong duplicate symbol.
 
 Static Analyzer
 ---------------

clang/lib/Basic/Targets/AArch64.cpp

@@ -1187,6 +1187,8 @@ TargetInfo::BuiltinVaListKind AArch64TargetInfo::getBuiltinVaListKind() const {
 }
 
 const char *const AArch64TargetInfo::GCCRegNames[] = {
+    // clang-format off
+
     // 32-bit Integer registers
     "w0", "w1", "w2", "w3", "w4", "w5", "w6", "w7", "w8", "w9", "w10", "w11",
     "w12", "w13", "w14", "w15", "w16", "w17", "w18", "w19", "w20", "w21", "w22",
@@ -1223,7 +1225,12 @@ const char *const AArch64TargetInfo::GCCRegNames[] = {
 
     // SVE predicate-as-counter registers
     "pn0",  "pn1",  "pn2",  "pn3",  "pn4",  "pn5",  "pn6",  "pn7",  "pn8",
-    "pn9",  "pn10", "pn11", "pn12", "pn13", "pn14", "pn15"
+    "pn9",  "pn10", "pn11", "pn12", "pn13", "pn14", "pn15",
+
+    // SME registers
+    "za", "zt0",
+
+    // clang-format on
 };
 
 ArrayRef<const char *> AArch64TargetInfo::getGCCRegNames() const {

clang/lib/Format/UnwrappedLineParser.cpp

@@ -2515,7 +2515,7 @@ bool UnwrappedLineParser::parseParens(TokenType AmpAmpTokenType) {
         parseChildBlock();
       break;
     case tok::r_paren:
-      if (!MightBeStmtExpr &&
+      if (!MightBeStmtExpr && !Line->InMacroBody &&
           Style.RemoveParentheses > FormatStyle::RPS_Leave) {
         const auto *Prev = LeftParen->Previous;
         const auto *Next = Tokens->peekNextToken();

clang/test/CodeGen/aarch64-inline-asm.c

@@ -95,3 +95,11 @@ void test_reduced_gpr_constraints(int var32, long var64) {
 // CHECK: [[ARG2:%.+]] = load i64, ptr
 // CHECK: call void asm sideeffect "add x0, x0, $0", "@3Ucj,~{x0}"(i64 [[ARG2]])
 }
+
+void test_sme_constraints(){
+  asm("movt zt0[3, mul vl], z0" : : : "za");
+// CHECK: call void asm sideeffect "movt zt0[3, mul vl], z0", "~{za}"()
+
+  asm("movt zt0[3, mul vl], z0" : : : "zt0");
+// CHECK: call void asm sideeffect "movt zt0[3, mul vl], z0", "~{zt0}"()
+}

clang/unittests/Format/FormatTest.cpp

@@ -26856,6 +26856,7 @@ TEST_F(FormatTest, RemoveParentheses) {
   EXPECT_EQ(Style.RemoveParentheses, FormatStyle::RPS_Leave);
 
   Style.RemoveParentheses = FormatStyle::RPS_MultipleParentheses;
+  verifyFormat("#define Foo(...) foo((__VA_ARGS__))", Style);
   verifyFormat("int x __attribute__((aligned(16))) = 0;", Style);
   verifyFormat("decltype((foo->bar)) baz;", Style);
   verifyFormat("class __declspec(dllimport) X {};",
@@ -26890,6 +26891,7 @@ TEST_F(FormatTest, RemoveParentheses) {
   verifyFormat("return (({ 0; }));", "return ((({ 0; })));", Style);
 
   Style.RemoveParentheses = FormatStyle::RPS_ReturnStatement;
+  verifyFormat("#define Return0 return (0);", Style);
   verifyFormat("return 0;", "return (0);", Style);
   verifyFormat("co_return 0;", "co_return ((0));", Style);
   verifyFormat("return 0;", "return (((0)));", Style);

libcxx/include/print

@@ -32,6 +32,7 @@ namespace std {
 */
 
 #include <__assert> // all public C++ headers provide the assertion handler
+#include <__availability>
 #include <__concepts/same_as.h>
 #include <__config>
 #include <__system_error/system_error.h>
@@ -43,10 +44,6 @@ namespace std {
 #include <string_view>
 #include <version>
 
-#if __has_include(<unistd.h>)
-#  include <unistd.h>
-#endif
-
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
@@ -68,7 +65,8 @@ _LIBCPP_EXPORTED_FROM_ABI bool __is_windows_terminal(FILE* __stream);
 // Note the function is only implemented on the Windows platform.
 _LIBCPP_EXPORTED_FROM_ABI void __write_to_windows_console(FILE* __stream, wstring_view __view);
 #  endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
-
+#elif __has_include(<unistd.h>)
+_LIBCPP_EXPORTED_FROM_ABI bool __is_posix_terminal(FILE* __stream);
 #endif // _LIBCPP_WIN32API
 
 #if _LIBCPP_STD_VER >= 23
@@ -195,15 +193,17 @@ inline constexpr bool __use_unicode_execution_charset = _MSVC_EXECUTION_CHARACTE
 inline constexpr bool __use_unicode_execution_charset = true;
 #  endif
 
-_LIBCPP_HIDE_FROM_ABI inline bool __is_terminal(FILE* __stream) {
+_LIBCPP_HIDE_FROM_ABI inline bool __is_terminal([[maybe_unused]] FILE* __stream) {
   // The macro _LIBCPP_TESTING_PRINT_IS_TERMINAL is used to change
   // the behavior in the test. This is not part of the public API.
 #  ifdef _LIBCPP_TESTING_PRINT_IS_TERMINAL
   return _LIBCPP_TESTING_PRINT_IS_TERMINAL(__stream);
+#  elif _LIBCPP_AVAILABILITY_HAS_PRINT == 0
+  return false;
 #  elif defined(_LIBCPP_WIN32API)
   return std::__is_windows_terminal(__stream);
 #  elif __has_include(<unistd.h>)
-  return isatty(fileno(__stream));
+  return std::__is_posix_terminal(__stream);
 #  else
 #    error "Provide a way to determine whether a FILE* is a terminal"
 #  endif

libcxx/lib/abi/CHANGELOG.TXT

@@ -16,6 +16,14 @@ New entries should be added directly below the "Version" header.
 Version 18.0
 ------------
 
+* [libc++] Moves is_terminal to the dylib
+
+  The patch moves the POSIX implementation of is_terminal to the dylib. This is
+  needed to avoid using <unistd.h> in public headers.
+
+  All platforms
+  Symbol added: _ZNSt6__ndk119__is_posix_terminalEP7__sFILE
+
 * [libc++abi] Implement __cxa_init_primary_exception and use it to optimize std::make_exception_ptr (#65534)
 
   This patch implements __cxa_init_primary_exception, an extension to the Itanium C++ ABI.

libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1495,6 +1495,7 @@
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt3__119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}

libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1176,6 +1176,7 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt6__ndk119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}

libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -534,6 +534,7 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP4FILE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}

libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -534,6 +534,7 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP4FILE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}

libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1495,6 +1495,7 @@
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt3__119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}

libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1176,6 +1176,7 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt6__ndk119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}

libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1190,6 +1190,7 @@
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP7__sFILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}

libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1188,6 +1188,7 @@
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP8_IO_FILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}

libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist

@@ -1159,6 +1159,7 @@
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutex8try_lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__118shared_timed_mutexC2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__119__is_posix_terminalEP8_IO_FILE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base11lock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base13unlock_sharedEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119__shared_mutex_base15try_lock_sharedEv', 'type': 'FUNC'}

libcxx/src/print.cpp

@@ -8,22 +8,26 @@
 
 #include <__config>
 
-#if defined(_LIBCPP_WIN32API)
+#include <cstdlib>
+#include <print>
+
+#include <__system_error/system_error.h>
 
-#  include <cstdlib>
-#  include <print>
+#include "filesystem/error.h"
 
+#if defined(_LIBCPP_WIN32API)
 #  define WIN32_LEAN_AND_MEAN
 #  define NOMINMAX
 #  include <io.h>
 #  include <windows.h>
-
-#  include <__system_error/system_error.h>
-
-#  include "filesystem/error.h"
+#elif __has_include(<unistd.h>)
+#  include <unistd.h>
+#endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
+#if defined(_LIBCPP_WIN32API)
+
 _LIBCPP_EXPORTED_FROM_ABI bool __is_windows_terminal(FILE* __stream) {
   // Note the Standard does this in one call, but it's unclear whether
   // an invalid handle is allowed when calling GetConsoleMode.
@@ -52,6 +56,9 @@ __write_to_windows_console([[maybe_unused]] FILE* __stream, [[maybe_unused]] wst
 }
 #  endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
 
-_LIBCPP_END_NAMESPACE_STD
+#elif __has_include(<unistd.h>) // !_LIBCPP_WIN32API
 
-#endif // !_LIBCPP_WIN32API
+_LIBCPP_EXPORTED_FROM_ABI bool __is_posix_terminal(FILE* __stream) { return isatty(fileno(__stream)); }
+#endif
+
+_LIBCPP_END_NAMESPACE_STD

lld/docs/ReleaseNotes.rst

@@ -86,6 +86,11 @@ COFF Improvements
 * LLD now prefers library paths specified with ``-libpath:`` over the implicitly
   detected toolchain paths.
 
+* Use the ``SOURCE_DATE_EPOCH`` environment variable for the PE header and
+  debug directory timestamps, if neither the ``/Brepro`` nor ``/timestamp:``
+  options have been specified. This makes the linker output reproducible by
+  setting this environment variable.
+
 MinGW Improvements
 ------------------
 

llvm/docs/ReleaseNotes.rst

@@ -164,6 +164,30 @@ Changes to the MIPS Backend
 Changes to the PowerPC Backend
 ------------------------------
 
+* LLJIT's JIT linker now defaults to JITLink on 64-bit ELFv2 targets.
+* Initial-exec TLS model is supported on AIX.
+* Implemented new resource based scheduling model of POWER7 and POWER8.
+* ``frexp`` libcall now references correct symbol name for ``fp128``.
+* Optimized materialization of 64-bit immediates, code generation of
+  ``vec_promote`` and atomics.
+* Global constant strings are pooled in the TOC under one entry to reduce the
+  number of entries in the TOC.
+* Added a number of missing Power10 extended mnemonics.
+* Added the SCV instruction.
+* Fixed register class for the paddi instruction.
+* Optimize VPERM and fix code order for swapping vector operands on LE.
+* Added various bug fixes and code gen improvements.
+
+AIX Support/improvements:
+
+* Support for a non-TOC-based access sequence for the local-exec TLS model (called small local-exec).
+* XCOFF toc-data peephole optimization and bug fixes.
+* Move less often used __ehinfo TOC entries to the end of the TOC section.
+* Fixed problems when the AIX libunwind unwinds starting from a signal handler
+  and the function that raised the signal happens to be a leaf function that
+  shares the stack frame with its caller or a leaf function that does not store
+  the stack frame backchain.
+
 Changes to the RISC-V Backend
 -----------------------------
 
@@ -317,6 +341,7 @@ Changes to the LLVM tools
 
 * llvm-symbolizer now treats invalid input as an address for which source
   information is not found.
+* Fixed big-endian support in llvm-symbolizer's DWARF location parser.
 * llvm-readelf now supports ``--extra-sym-info`` (``-X``) to display extra
   information (section name) when showing symbols.
 
@@ -328,6 +353,13 @@ Changes to the LLVM tools
 * llvm-objcopy now supports ``--gap-fill`` and ``--pad-to`` options, for
   ELF input and binary output files only.
 
+* Supported parsing XCOFF auxiliary symbols in obj2yaml.
+
+* ``llvm-ranlib`` now supports ``-X`` on AIX to specify the type of object file
+  ranlib should examine.
+
+* ``llvm-nm`` now supports ``--export-symbol`` to ignore the import symbol file.
+
 * llvm-rc and llvm-windres now accept file path references in ``.rc`` files
   concatenated from multiple string literals.
 
@@ -387,6 +419,12 @@ Changes to Sanitizers
 ---------------------
 * HWASan now defaults to detecting use-after-scope bugs.
 
+Changes to the Profile Runtime
+------------------------------
+
+* Public header ``profile/instr_prof_interface.h`` is added to declare four
+  API functions to fine tune profile collection.
+
 Other Changes
 -------------