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183 lines
6.9 KiB
183 lines
6.9 KiB
4 months ago
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# Release Notes
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## clang-r383902
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### Upstream Cherry-picks
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Patches with start_version: 383902 in https://android.googlesource.com/toolchain/llvm_android/+/master/patches/PATCHES.json.
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### Local Changes
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Revert 90c31b0f428f [X86] Custom lower ISD::FROUND with SSE4.1 to avoid a libcall.
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### Notes
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New Clang warnings encountered:
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- -Wdeprecated-copy
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- -Wrange-loop-construct
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- -Wmisleading-indentation
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- -Wzero-as-null-pointer-constant (not new, but seems to have stricter rule)
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- -Wdeprecated-anon-enum-enum-conversion
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- -Wdeprecated-enum-enum-conversion
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- -Wstring-compare
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- -Wenum-enum-conversion
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- -Wenum-float-conversion
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- -Wpessimizing-move
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New Clang-tidy warnings encountered:
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- -bugprone-reserved-identifier*,-cert-dcl51-cpp,-cert-dcl37-c
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- -readability-qualified-auto
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- -bugprone-signed-char-misuse
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- -bugprone-branch-clone
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Clang detects new compilation errors for not-instantiated template member functions.
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Switch from python wrapper to go wrapper.
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### Enabled
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May 01 2020
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------
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## clang-r377782d
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### Upstream Cherry-picks
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- 6c732461 [ELF] Fix a null pointer dereference when --emit-relocs and --strip-debug are used together
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### Enabled
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Apr 04 2020
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------
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## clang-r377782c
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### Upstream Cherry-picks
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- 41206b61e30c [DebugInfo] Re-instate LiveDebugVariables scope trimming
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- 1de10705594c [DAGCombine] Fix alias analysis for unaligned accesses
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### Enabled
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Mar 19 2020
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------
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## clang-r377782b
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### Upstream Cherry-picks
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- a3b22da4e0ea [CFG] Fix a flaky crash in CFGBlock::getLastCondition().
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- d32484f40cbe [lldb][CMake] Fix build for the case of custom libedit installation
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- 21f26470e974 Revert 3f91705ca54 ARM-NEON: make type modifiers orthogonal and allow multiple modifiers
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- 90b8bc003caa IRGen: Call SetLLVMFunctionAttributes{,ForDefinition} on __cfi_check_fail
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- acc79aa0e747 Revert "Revert 1689ad27af5"[builtins] Implement rounding mode support for i386/x86_64
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- c5b890e92243 PR44268: Fix crash if __builtin_object_size is applied to a heap allocation.
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- cd40bd0a32e2 hwasan: Move .note.hwasan.globals note to hwasan.module_ctor comdat.
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- 4f38ab250ff4 [LLD][ELF][ARM] Do not insert interworking thunks for non STT_FUNC symbols
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- 6c4a8bc0a9f6 Make llvm::crc32() work also for input sizes larger than 32 bits.
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- f8c9ceb1ce9c [SimplifyLibCalls] Add __strlen_chk.
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### Local Changes
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- Revert two changes that break Android builds
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- Add stubs and headers for nl_types APIs
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- Add a new library libclang cxx
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- Do not record function addresses if value profiling is disabled
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### Notes
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New Clang warnings encountered:
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- -Wbitwise-conditional-parentheses
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- -Wbool-operation
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- -Wint-in-bool-context
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- -Wsizeof-array-div
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- -Wtautological-bitwise-compare
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- -Wtautological-overlap-compare
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### Enabled
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Feb 18 2020
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------
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## clang-r370808
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### Upstream Cherry-picks
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- 1689ad27af5c [builtins] Implement rounding mode support for i386/x86_64
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- 9e7ce07a8866 ARM: Don't emit R_ARM_NONE relocations to compact unwinding decoders in .ARM.exidx on Android.
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- 51adeae1c90c remove redundant LLVM version from version string when setting CLANG_VENDOR
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- 8ea148dc0cbf [Builtins] Fix bug where powerpc builtins specializations didn't remove generic implementations.
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- 7a2b704bf0cf [Sema][Typo Correction] Fix another infinite loop on ambiguity
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- r370981 [DebugInfo] Emit DW_TAG_enumeration_type for referenced global enumerator.
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- r371003 Revert "Revert "[builtins] Rounding mode support for addxf3/subxf3""
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- r371090 Fix windows-x86-debug compilation with python enabled using multi-target generator
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- r371111 [IfConversion] Fix diamond conversion with unanalyzable branches.
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- r371202 Revert r370635, it caused PR43241.
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- r371215 Revert "Revert r370635, it caused PR43241."
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- r371216 Reland D66717 [ELF] Do not ICF two sections with different output sections (by SECTIONS commands)
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- r371262 [IR] CallBrInst: scan+update arg list when indirect dest list changes
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- r371434 [IfConversion] Correctly handle cases where analyzeBranch fails.
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- r371643 [IRMover] Don't map globals if their types are the same
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- r371804 [ELF] Delete a redundant assignment to SectionBase::assigned. NFC
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- r371859 [Sema][Typo Correction] Fix potential infite loop on ambiguity checks
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- r371957 [ELF] Map the ELF header at imageBase
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- r372047 Fix swig python package path
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- r372194 Cache PYTHON_EXECUTABLE for windows
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- r372364 Revert "Fix swig python package path"
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- r372400 [ELF] Error if the linked-to section of a SHF_LINK_ORDER section is discarded
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- r372482 [LLDB] Fix compilation for MinGW, remove redundant class name on inline member
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- r372493 Use _WIN32 instead of _MSC_VER
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- r372587 [LLDB] Add a missing specification of linking against dbghelp
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- r372734 [ELF] Make MergeInputSection merging aware of output sections
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- r372735 [ELF] Delete SectionBase::assigned
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- r372835 [lldb] [cmake] Fix installing Python modules on systems using /usr/lib
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- r372996 [ELF] Set SectionBase::partition in processSectionCommands
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- r373022 Always rebuild a DeclRefExpr if its FoundDecl would change.
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- r373035 hwasan: Compatibility fixes for short granules.
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- r373255 ELF: Don't merge SHF_LINK_ORDER sections for different output sections in relocatable links.
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- r373929 Fix Calling Convention through aliases
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- r375166 libhwasan initialisation include kernel syscall ABI relaxation
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- r375298 hwasan: Add missing SANITIZER_INTERFACE_ATTRIBUTE on __hwasan_personality_wrapper.
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### Notes
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New Clang warnings encountered:
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- -Wreorder-init-list
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- -Walloca
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- -Wc99-designator
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- -Wdangling-gsl
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- -Wimplicit-fallthrough
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- -Wimplicit-int-float-conversion
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- -Wincomplete-setjmp-declaration
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- -Wpointer-compare
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- -Wxor-used-as-pow
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-Wimplicit fallthrough was previously only checked for C++ code, but Clang can
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now for for C code. `__attribute__((__fallthrough__))` should be used to
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explicitly specify intentional fallthrough to silence the warning.
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Lots of cherry picks are fixes for LLDB and HWASAN.
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r373035 is slightly different from upstream due to not additionally cherry
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picking r372338.
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Writes to variables declared const through casts to non-const pointers
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(explicitly undefined behavior) are now removed. The next release of Clang adds
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UBSAN support for catching such mistakes.
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### Created
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Nov 11 2019
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-----
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## clang-r365631c
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### Upstream Cherry-picks
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- r366130 [LoopUnroll+LoopUnswitch] do not transform loops containing callbr
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- r369761 [llvm-objcopy] Strip debug sections when running with --strip-unneeded.
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- r370981 [DebugInfo] Emit DW_TAG_enumeration_type for referenced global enumerator.
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- r372047 Fix swig python package path
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- r372194 Cache PYTHON_EXECUTABLE for windows
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- r372364 Revert "Fix swig python package path"
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- r372587 [LLDB] Add a missing specification of linking against dbghelp
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- r372835 [lldb] [cmake] Fix installing Python modules on systems using /usr/lib
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### Notes
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Fixes for:
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- asm goto + LTO in Android Linux kernels
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- debug info missing for enums
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- NDK fixes for:
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- stripping debug sections w/ llvm-objcopy/llvm-strip
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- LLDB
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### Created
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Sep 26 2019
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-----
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## Older Releases
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Release notes not available.
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