svn commit: r343179 - in vendor/lld/dist: . COFF Common ELF ELF/Arch MinGW docs include/lld/Common include/lld/Core lib/Driver lib/ReaderWriter/MachO test test/COFF test/COFF/Inputs test/ELF test/E...

Sat Jan 19 10:05:55 UTC 2019

Author: dim
Date: Sat Jan 19 10:05:49 2019
New Revision: 343179
URL: https://svnweb.freebsd.org/changeset/base/343179

Log:
  Vendor import of lld trunk r351319 (just before the release_80 branch
  point):
  https://llvm.org/svn/llvm-project/lld/trunk@351319

Added:
  vendor/lld/dist/ELF/Arch/MSP430.cpp
  vendor/lld/dist/ELF/Arch/RISCV.cpp
  vendor/lld/dist/ELF/DWARF.cpp
  vendor/lld/dist/ELF/DWARF.h
  vendor/lld/dist/docs/missingkeyfunction.rst
  vendor/lld/dist/test/COFF/Inputs/associative-comdat-mingw-2.s
  vendor/lld/dist/test/COFF/Inputs/bad-block-size.pdb   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/comdat-jumptable2.s
  vendor/lld/dist/test/COFF/Inputs/common-replacement.s
  vendor/lld/dist/test/COFF/Inputs/crt-dyn-initializer-order_1.yaml
  vendor/lld/dist/test/COFF/Inputs/crt-dyn-initializer-order_2.yaml
  vendor/lld/dist/test/COFF/Inputs/empty.yaml
  vendor/lld/dist/test/COFF/Inputs/gnu-implib-data.s
  vendor/lld/dist/test/COFF/Inputs/gnu-implib-func.s
  vendor/lld/dist/test/COFF/Inputs/gnu-implib-head.s
  vendor/lld/dist/test/COFF/Inputs/gnu-implib-tail.s
  vendor/lld/dist/test/COFF/Inputs/gnu-weak.o   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/gnu-weak2.o   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/icf-safe.s
  vendor/lld/dist/test/COFF/Inputs/inline-weak.o   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/inline-weak2.o   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/pdb-type-server-missing-2.yaml
  vendor/lld/dist/test/COFF/Inputs/pdb-type-server-valid-signature.yaml
  vendor/lld/dist/test/COFF/Inputs/precomp-a.obj   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/precomp-b.obj   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/precomp-invalid.obj   (contents, props changed)
  vendor/lld/dist/test/COFF/Inputs/precomp.obj   (contents, props changed)
  vendor/lld/dist/test/COFF/arm-thumb-thunks-multipass.s
  vendor/lld/dist/test/COFF/arm-thumb-thunks.s
  vendor/lld/dist/test/COFF/arm64-delayimport.yaml
  vendor/lld/dist/test/COFF/arm64-localimport-align.s
  vendor/lld/dist/test/COFF/associative-comdat-mingw.s
  vendor/lld/dist/test/COFF/autoimport-arm-code.s
  vendor/lld/dist/test/COFF/autoimport-arm-data.s
  vendor/lld/dist/test/COFF/autoimport-arm64-code.s
  vendor/lld/dist/test/COFF/autoimport-arm64-data.s
  vendor/lld/dist/test/COFF/autoimport-gnu-implib.s
  vendor/lld/dist/test/COFF/autoimport-list-ptrs.s
  vendor/lld/dist/test/COFF/autoimport-refptr.s
  vendor/lld/dist/test/COFF/autoimport-x86.s
  vendor/lld/dist/test/COFF/broken-arm-reloc.yaml
  vendor/lld/dist/test/COFF/comdat-jumptable.s
  vendor/lld/dist/test/COFF/comdat-weak.test
  vendor/lld/dist/test/COFF/common-replacement.s
  vendor/lld/dist/test/COFF/could-not-open.test
  vendor/lld/dist/test/COFF/crt-dyn-initializer-order.test
  vendor/lld/dist/test/COFF/debug-fastlink.test
  vendor/lld/dist/test/COFF/directives.s
  vendor/lld/dist/test/COFF/duplicate-imp-func.s
  vendor/lld/dist/test/COFF/entry-inference-mingw.s
  vendor/lld/dist/test/COFF/entry-inference332.test
  vendor/lld/dist/test/COFF/entry-inference4.test
  vendor/lld/dist/test/COFF/force-multiple.test
  vendor/lld/dist/test/COFF/gfids-export.s
  vendor/lld/dist/test/COFF/gfids-relocations32.s
  vendor/lld/dist/test/COFF/gfids-relocations64.s
  vendor/lld/dist/test/COFF/gnu-weak.test
  vendor/lld/dist/test/COFF/header-size.s
  vendor/lld/dist/test/COFF/icf-safe.s
  vendor/lld/dist/test/COFF/ignore-many.test
  vendor/lld/dist/test/COFF/imports-gnu-autoexport.s
  vendor/lld/dist/test/COFF/imports-gnu-only.s
  vendor/lld/dist/test/COFF/imports-gnu.test
  vendor/lld/dist/test/COFF/invalid-debug.test
  vendor/lld/dist/test/COFF/libname-mingw.test
  vendor/lld/dist/test/COFF/line-error.yaml
  vendor/lld/dist/test/COFF/lto-cpu-string.ll
  vendor/lld/dist/test/COFF/no-idata.s
  vendor/lld/dist/test/COFF/pdb-debug-f.s
  vendor/lld/dist/test/COFF/pdb-framedata.yaml
  vendor/lld/dist/test/COFF/pdb-type-server-invalid-signature.yaml
  vendor/lld/dist/test/COFF/pdb-type-server-native-errors.yaml
  vendor/lld/dist/test/COFF/pdbaltpath.test
  vendor/lld/dist/test/COFF/precomp-link.test
  vendor/lld/dist/test/COFF/s_udt.s
  vendor/lld/dist/test/COFF/subsystem-inference-mingw.s
  vendor/lld/dist/test/COFF/subsystem-inference2.test
  vendor/lld/dist/test/COFF/subsystem-inference32.test
  vendor/lld/dist/test/ELF/Inputs/bad-reloc-target.test
  vendor/lld/dist/test/ELF/Inputs/copy-rel-tls.s
  vendor/lld/dist/test/ELF/Inputs/gdb-index-invalid-ranges.obj.s
  vendor/lld/dist/test/ELF/Inputs/gdb-index-multiple-cu-2.s
  vendor/lld/dist/test/ELF/Inputs/hexagon-shared.s
  vendor/lld/dist/test/ELF/Inputs/i386-linkonce.s
  vendor/lld/dist/test/ELF/Inputs/ppc64-bsymbolic-local-def.s
  vendor/lld/dist/test/ELF/Inputs/ppc64-no-split-stack.s
  vendor/lld/dist/test/ELF/Inputs/ppc64-tls-ie-le.s
  vendor/lld/dist/test/ELF/Inputs/ppc64le-quadword-ldst.o   (contents, props changed)
  vendor/lld/dist/test/ELF/Inputs/wrap-with-archive.s
  vendor/lld/dist/test/ELF/Inputs/x86-64-split-stack-extra.s
  vendor/lld/dist/test/ELF/aarch64-combined-dynrel-ifunc.s
  vendor/lld/dist/test/ELF/aarch64-combined-dynrel.s
  vendor/lld/dist/test/ELF/aarch64-cortex-a53-843419-abs-mapsyms.s
  vendor/lld/dist/test/ELF/aarch64-cortex-a53-843419-large2.s
  vendor/lld/dist/test/ELF/aarch64-cortex-a53-843419-tlsrelax.s
  vendor/lld/dist/test/ELF/aarch64-gnu-ifunc-address.s
  vendor/lld/dist/test/ELF/aarch64-gnu-ifunc2.s
  vendor/lld/dist/test/ELF/aarch64-gnu-ifunc3.s
  vendor/lld/dist/test/ELF/archive-fetch.s
  vendor/lld/dist/test/ELF/arm-bl-v6-inrange.s
  vendor/lld/dist/test/ELF/arm-combined-dynrel-ifunc.s
  vendor/lld/dist/test/ELF/arm-extreme-range-pi-thunk.s
  vendor/lld/dist/test/ELF/arm-thumb-interwork-thunk-v5.s
  vendor/lld/dist/test/ELF/arm-thumb-thunk-v6m.s
  vendor/lld/dist/test/ELF/arm-thumb-undefined-weak-narrow.test
  vendor/lld/dist/test/ELF/arm-v4bx.test
  vendor/lld/dist/test/ELF/arm-v5-reloc-error.s
  vendor/lld/dist/test/ELF/as-needed-in-regular.s
  vendor/lld/dist/test/ELF/as-needed-not-in-regular.s
  vendor/lld/dist/test/ELF/bad-reloc-target.test
  vendor/lld/dist/test/ELF/cgprofile-obj.s
  vendor/lld/dist/test/ELF/cgprofile-shared-warn.s
  vendor/lld/dist/test/ELF/cgprofile-txt2.s
  vendor/lld/dist/test/ELF/copy-rel-tls.s
  vendor/lld/dist/test/ELF/debug-line-str.s
  vendor/lld/dist/test/ELF/debug-relocation-none.test
  vendor/lld/dist/test/ELF/dynamic-list-locals.s
  vendor/lld/dist/test/ELF/dynamic-list-unexpected-end.s
  vendor/lld/dist/test/ELF/emit-relocs-icf1.s
  vendor/lld/dist/test/ELF/emit-relocs-icf2.s
  vendor/lld/dist/test/ELF/empty-pack-dyn-relocs.s
  vendor/lld/dist/test/ELF/emulation-aarch64.s
  vendor/lld/dist/test/ELF/emulation-arm.s
  vendor/lld/dist/test/ELF/emulation-mips.s
  vendor/lld/dist/test/ELF/emulation-ppc.s
  vendor/lld/dist/test/ELF/emulation-x86.s
  vendor/lld/dist/test/ELF/gdb-index-dwarf5-low-high.s
  vendor/lld/dist/test/ELF/gdb-index-invalid-ranges.s
  vendor/lld/dist/test/ELF/gdb-index-multiple-cu-2.s
  vendor/lld/dist/test/ELF/gdb-index-multiple-cu.s
  vendor/lld/dist/test/ELF/gdb-index-no-debug.s
  vendor/lld/dist/test/ELF/gdb-index-rng-lists.s
  vendor/lld/dist/test/ELF/global-offset-table-position-redef-err.s
  vendor/lld/dist/test/ELF/gnu-ifunc-empty.s
  vendor/lld/dist/test/ELF/hexagon-eflag.s
  vendor/lld/dist/test/ELF/hexagon-shared.s
  vendor/lld/dist/test/ELF/i386-linkonce.s
  vendor/lld/dist/test/ELF/invalid/Inputs/undefined-local-symbol-in-dso.so   (contents, props changed)
  vendor/lld/dist/test/ELF/invalid/comdat-broken.test
  vendor/lld/dist/test/ELF/invalid/ehframe-broken-relocation.test
  vendor/lld/dist/test/ELF/invalid/invalid-soname.test
  vendor/lld/dist/test/ELF/invalid/linkorder-invalid-sec.test
  vendor/lld/dist/test/ELF/invalid/linkorder-invalid-sec2.test
  vendor/lld/dist/test/ELF/invalid/merge-zero-size.test
  vendor/lld/dist/test/ELF/invalid/non-terminated-string.test
  vendor/lld/dist/test/ELF/invalid/sht-group-wrong-section.test
  vendor/lld/dist/test/ELF/invalid/sht-group.test
  vendor/lld/dist/test/ELF/invalid/undefined-local-symbol-in-dso.test
  vendor/lld/dist/test/ELF/lazy-arch-conflict.s
  vendor/lld/dist/test/ELF/linkerscript/Inputs/at6.s
  vendor/lld/dist/test/ELF/linkerscript/Inputs/at7.s
  vendor/lld/dist/test/ELF/linkerscript/Inputs/at8.s
  vendor/lld/dist/test/ELF/linkerscript/at6.test
  vendor/lld/dist/test/ELF/linkerscript/at7.test
  vendor/lld/dist/test/ELF/linkerscript/at8.test
  vendor/lld/dist/test/ELF/linkerscript/icf.s
  vendor/lld/dist/test/ELF/linkerscript/memory-include.test
  vendor/lld/dist/test/ELF/linkerscript/merge-nonalloc.s
  vendor/lld/dist/test/ELF/linkerscript/no-filename-spec.s
  vendor/lld/dist/test/ELF/linkerscript/output-section-include.test
  vendor/lld/dist/test/ELF/linkerscript/relocatable-discard.s
  vendor/lld/dist/test/ELF/linkerscript/section-include.test
  vendor/lld/dist/test/ELF/linkerscript/symbol-location.s
  vendor/lld/dist/test/ELF/linkerscript/target.s
  vendor/lld/dist/test/ELF/local-ver-preemptible.s
  vendor/lld/dist/test/ELF/lto/Inputs/libcall-archive.s
  vendor/lld/dist/test/ELF/lto/amdgcn.ll
  vendor/lld/dist/test/ELF/lto/emit-llvm.ll
  vendor/lld/dist/test/ELF/lto/ppc64le.ll
  vendor/lld/dist/test/ELF/lto/r600.ll
  vendor/lld/dist/test/ELF/mergeable-errors.s
  vendor/lld/dist/test/ELF/mips-traps.s
  vendor/lld/dist/test/ELF/msp430.s
  vendor/lld/dist/test/ELF/note-first-page.s
  vendor/lld/dist/test/ELF/pack-dyn-relocs-loop.s
  vendor/lld/dist/test/ELF/pack-dyn-relocs-tls-aarch64.s
  vendor/lld/dist/test/ELF/pack-dyn-relocs-tls-x86-64.s
  vendor/lld/dist/test/ELF/ppc64-bsymbolic-toc-restore.s
  vendor/lld/dist/test/ELF/ppc64-call-reach.s
  vendor/lld/dist/test/ELF/ppc64-dq.s
  vendor/lld/dist/test/ELF/ppc64-entry-point.s
  vendor/lld/dist/test/ELF/ppc64-error-missaligned-dq.s
  vendor/lld/dist/test/ELF/ppc64-error-missaligned-ds.s
  vendor/lld/dist/test/ELF/ppc64-got-off.s
  vendor/lld/dist/test/ELF/ppc64-long-branch.s
  vendor/lld/dist/test/ELF/ppc64-shared-long_branch.s
  vendor/lld/dist/test/ELF/ppc64-split-stack-adjust-fail.s
  vendor/lld/dist/test/ELF/ppc64-split-stack-adjust-overflow.s
  vendor/lld/dist/test/ELF/ppc64-split-stack-adjust-size-success.s
  vendor/lld/dist/test/ELF/ppc64-split-stack-prologue-adjust-success.s
  vendor/lld/dist/test/ELF/ppc64-tls-gd-le-small.s
  vendor/lld/dist/test/ELF/ppc64-tls-ie-le.s
  vendor/lld/dist/test/ELF/ppc64-toc-addis-nop-lqsq.s
  vendor/lld/dist/test/ELF/ppc64-toc-addis-nop.s
  vendor/lld/dist/test/ELF/ppc64-toc-restore-recursive-call.s
  vendor/lld/dist/test/ELF/ppc64-tocopt-option.s
  vendor/lld/dist/test/ELF/relocatable-rel-iplt.s
  vendor/lld/dist/test/ELF/relocation-before-merge-start.s
  vendor/lld/dist/test/ELF/riscv-branch.test
  vendor/lld/dist/test/ELF/riscv-call.test
  vendor/lld/dist/test/ELF/riscv-hi20-lo12.test
  vendor/lld/dist/test/ELF/riscv-jal-error.test
  vendor/lld/dist/test/ELF/riscv-jal.test
  vendor/lld/dist/test/ELF/riscv-pcrel-hilo.test
  vendor/lld/dist/test/ELF/static-error.s
  vendor/lld/dist/test/ELF/textrel.s
  vendor/lld/dist/test/ELF/wrap-entry.s
  vendor/lld/dist/test/ELF/wrap-plt.s
  vendor/lld/dist/test/ELF/wrap-with-archive.s
  vendor/lld/dist/test/ELF/x86-64-combined-dynrel.s
  vendor/lld/dist/test/ELF/x86-64-retpoline-znow-static-iplt.s
  vendor/lld/dist/test/ELF/x86-64-split-stack-prologue-adjust-shared.s
  vendor/lld/dist/test/wasm/Inputs/event-section1.ll
  vendor/lld/dist/test/wasm/Inputs/event-section2.ll
  vendor/lld/dist/test/wasm/archive-export.ll
  vendor/lld/dist/test/wasm/debug-removed-fn.ll
  vendor/lld/dist/test/wasm/event-section.ll
  vendor/lld/dist/test/wasm/lto/signature-mismatch.ll
  vendor/lld/dist/test/wasm/shared.ll
  vendor/lld/dist/test/wasm/strip-all.test
  vendor/lld/dist/wasm/InputEvent.h
Deleted:
  vendor/lld/dist/ELF/GdbIndex.cpp
  vendor/lld/dist/ELF/GdbIndex.h
  vendor/lld/dist/include/lld/Core/TODO.txt
  vendor/lld/dist/test/COFF/Inputs/far-arm-thumb-abs.s
  vendor/lld/dist/test/COFF/Inputs/far-arm-thumb-abs20.s
  vendor/lld/dist/test/COFF/arm-thumb-branch-error.s
  vendor/lld/dist/test/COFF/msvclto-archive.ll
  vendor/lld/dist/test/COFF/msvclto-order.ll
  vendor/lld/dist/test/COFF/msvclto.ll
  vendor/lld/dist/test/ELF/emulation.s
  vendor/lld/dist/test/ELF/invalid/Inputs/shentsize-zero.elf
  vendor/lld/dist/test/ELF/invalid/Inputs/sht-group.elf
  vendor/lld/dist/test/ELF/invalid/sht-group.s
  vendor/lld/dist/test/ELF/linkerscript/ouputformat.s
  vendor/lld/dist/test/ELF/ppc64_entry_point.s
Modified:
  vendor/lld/dist/COFF/Chunks.cpp
  vendor/lld/dist/COFF/Chunks.h
  vendor/lld/dist/COFF/Config.h
  vendor/lld/dist/COFF/DLL.cpp
  vendor/lld/dist/COFF/DLL.h
  vendor/lld/dist/COFF/Driver.cpp
  vendor/lld/dist/COFF/Driver.h
  vendor/lld/dist/COFF/DriverUtils.cpp
  vendor/lld/dist/COFF/ICF.cpp
  vendor/lld/dist/COFF/InputFiles.cpp
  vendor/lld/dist/COFF/InputFiles.h
  vendor/lld/dist/COFF/LTO.cpp
  vendor/lld/dist/COFF/MapFile.cpp
  vendor/lld/dist/COFF/MarkLive.cpp
  vendor/lld/dist/COFF/MinGW.cpp
  vendor/lld/dist/COFF/MinGW.h
  vendor/lld/dist/COFF/Options.td
  vendor/lld/dist/COFF/PDB.cpp
  vendor/lld/dist/COFF/PDB.h
  vendor/lld/dist/COFF/SymbolTable.cpp
  vendor/lld/dist/COFF/SymbolTable.h
  vendor/lld/dist/COFF/Symbols.cpp
  vendor/lld/dist/COFF/Symbols.h
  vendor/lld/dist/COFF/Writer.cpp
  vendor/lld/dist/COFF/Writer.h
  vendor/lld/dist/Common/Args.cpp
  vendor/lld/dist/Common/ErrorHandler.cpp
  vendor/lld/dist/Common/Strings.cpp
  vendor/lld/dist/Common/TargetOptionsCommandFlags.cpp
  vendor/lld/dist/ELF/AArch64ErrataFix.cpp
  vendor/lld/dist/ELF/Arch/AArch64.cpp
  vendor/lld/dist/ELF/Arch/AMDGPU.cpp
  vendor/lld/dist/ELF/Arch/ARM.cpp
  vendor/lld/dist/ELF/Arch/AVR.cpp
  vendor/lld/dist/ELF/Arch/Hexagon.cpp
  vendor/lld/dist/ELF/Arch/Mips.cpp
  vendor/lld/dist/ELF/Arch/PPC.cpp
  vendor/lld/dist/ELF/Arch/PPC64.cpp
  vendor/lld/dist/ELF/Arch/SPARCV9.cpp
  vendor/lld/dist/ELF/Arch/X86.cpp
  vendor/lld/dist/ELF/Arch/X86_64.cpp
  vendor/lld/dist/ELF/CMakeLists.txt
  vendor/lld/dist/ELF/CallGraphSort.cpp
  vendor/lld/dist/ELF/Config.h
  vendor/lld/dist/ELF/Driver.cpp
  vendor/lld/dist/ELF/Driver.h
  vendor/lld/dist/ELF/DriverUtils.cpp
  vendor/lld/dist/ELF/EhFrame.cpp
  vendor/lld/dist/ELF/ICF.cpp
  vendor/lld/dist/ELF/InputFiles.cpp
  vendor/lld/dist/ELF/InputFiles.h
  vendor/lld/dist/ELF/InputSection.cpp
  vendor/lld/dist/ELF/InputSection.h
  vendor/lld/dist/ELF/LTO.cpp
  vendor/lld/dist/ELF/LTO.h
  vendor/lld/dist/ELF/LinkerScript.cpp
  vendor/lld/dist/ELF/LinkerScript.h
  vendor/lld/dist/ELF/MapFile.cpp
  vendor/lld/dist/ELF/MarkLive.cpp
  vendor/lld/dist/ELF/Options.td
  vendor/lld/dist/ELF/OutputSections.cpp
  vendor/lld/dist/ELF/OutputSections.h
  vendor/lld/dist/ELF/Relocations.cpp
  vendor/lld/dist/ELF/Relocations.h
  vendor/lld/dist/ELF/ScriptLexer.cpp
  vendor/lld/dist/ELF/ScriptLexer.h
  vendor/lld/dist/ELF/ScriptParser.cpp
  vendor/lld/dist/ELF/SymbolTable.cpp
  vendor/lld/dist/ELF/SymbolTable.h
  vendor/lld/dist/ELF/Symbols.cpp
  vendor/lld/dist/ELF/Symbols.h
  vendor/lld/dist/ELF/SyntheticSections.cpp
  vendor/lld/dist/ELF/SyntheticSections.h
  vendor/lld/dist/ELF/Target.cpp
  vendor/lld/dist/ELF/Target.h
  vendor/lld/dist/ELF/Thunks.cpp
  vendor/lld/dist/ELF/Writer.cpp
  vendor/lld/dist/LICENSE.TXT
  vendor/lld/dist/MinGW/Driver.cpp
  vendor/lld/dist/MinGW/Options.td
  vendor/lld/dist/docs/NewLLD.rst
  vendor/lld/dist/docs/README.txt
  vendor/lld/dist/docs/Readers.rst
  vendor/lld/dist/docs/ReleaseNotes.rst
  vendor/lld/dist/docs/WebAssembly.rst
  vendor/lld/dist/docs/conf.py
  vendor/lld/dist/docs/index.rst
  vendor/lld/dist/docs/ld.lld.1
  vendor/lld/dist/docs/open_projects.rst
  vendor/lld/dist/docs/windows_support.rst
  vendor/lld/dist/include/lld/Common/Args.h
  vendor/lld/dist/include/lld/Common/ErrorHandler.h
  vendor/lld/dist/include/lld/Common/LLVM.h
  vendor/lld/dist/include/lld/Common/Strings.h
  vendor/lld/dist/include/lld/Common/TargetOptionsCommandFlags.h
  vendor/lld/dist/include/lld/Common/Threads.h
  vendor/lld/dist/lib/Driver/DarwinLdDriver.cpp
  vendor/lld/dist/lib/ReaderWriter/MachO/ArchHandler_x86_64.cpp
  vendor/lld/dist/lib/ReaderWriter/MachO/MachOLinkingContext.cpp
  vendor/lld/dist/lib/ReaderWriter/MachO/MachONormalizedFileBinaryUtils.h
  vendor/lld/dist/test/CMakeLists.txt
  vendor/lld/dist/test/COFF/Inputs/pdb-file-statics-a.yaml
  vendor/lld/dist/test/COFF/Inputs/pdb-file-statics-b.yaml
  vendor/lld/dist/test/COFF/Inputs/pdb-scopes-a.yaml
  vendor/lld/dist/test/COFF/Inputs/pdb-scopes-b.yaml
  vendor/lld/dist/test/COFF/Inputs/pdb-type-server-simple-a.yaml
  vendor/lld/dist/test/COFF/Inputs/pdb-type-server-simple-b.yaml
  vendor/lld/dist/test/COFF/arm-thumb-branch20-error.s
  vendor/lld/dist/test/COFF/arm64-relocs-imports.test
  vendor/lld/dist/test/COFF/baserel.test
  vendor/lld/dist/test/COFF/ctors_dtors_priority.s
  vendor/lld/dist/test/COFF/debug-reloc.s
  vendor/lld/dist/test/COFF/entry-inference.test
  vendor/lld/dist/test/COFF/entry-inference3.test
  vendor/lld/dist/test/COFF/export-all.s
  vendor/lld/dist/test/COFF/export.test
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  vendor/lld/dist/wasm/MarkLive.cpp
  vendor/lld/dist/wasm/Options.td
  vendor/lld/dist/wasm/OutputSections.cpp
  vendor/lld/dist/wasm/OutputSections.h
  vendor/lld/dist/wasm/OutputSegment.h
  vendor/lld/dist/wasm/SymbolTable.cpp
  vendor/lld/dist/wasm/SymbolTable.h
  vendor/lld/dist/wasm/Symbols.cpp
  vendor/lld/dist/wasm/Symbols.h
  vendor/lld/dist/wasm/Writer.cpp
  vendor/lld/dist/wasm/WriterUtils.cpp
  vendor/lld/dist/wasm/WriterUtils.h

Modified: vendor/lld/dist/COFF/Chunks.cpp
==============================================================================

--- vendor/lld/dist/COFF/Chunks.cpp	Sat Jan 19 10:05:41 2019	(r343178)
+++ vendor/lld/dist/COFF/Chunks.cpp	Sat Jan 19 10:05:49 2019	(r343179)
@@ -11,6 +11,7 @@
 #include "InputFiles.h"
 #include "Symbols.h"
 #include "Writer.h"
+#include "SymbolTable.h"
 #include "lld/Common/ErrorHandler.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/BinaryFormat/COFF.h"
@@ -44,6 +45,22 @@ SectionChunk::SectionChunk(ObjFile *F, const coff_sect
   Live = !Config->DoGC || !isCOMDAT();
 }
 
+// Initialize the RelocTargets vector, to allow redirecting certain relocations
+// to a thunk instead of the actual symbol the relocation's symbol table index
+// indicates.
+void SectionChunk::readRelocTargets() {
+  assert(RelocTargets.empty());
+  RelocTargets.reserve(Relocs.size());
+  for (const coff_relocation &Rel : Relocs)
+    RelocTargets.push_back(File->getSymbol(Rel.SymbolTableIndex));
+}
+
+// Reset RelocTargets to their original targets before thunks were added.
+void SectionChunk::resetRelocTargets() {
+  for (size_t I = 0, E = Relocs.size(); I < E; ++I)
+    RelocTargets[I] = File->getSymbol(Relocs[I].SymbolTableIndex);
+}
+
 static void add16(uint8_t *P, int16_t V) { write16le(P, read16le(P) + V); }
 static void add32(uint8_t *P, int32_t V) { write32le(P, read32le(P) + V); }
 static void add64(uint8_t *P, int64_t V) { write64le(P, read64le(P) + V); }
@@ -58,7 +75,8 @@ static bool checkSecRel(const SectionChunk *Sec, Outpu
     return true;
   if (Sec->isCodeView())
     return false;
-  fatal("SECREL relocation cannot be applied to absolute symbols");
+  error("SECREL relocation cannot be applied to absolute symbols");
+  return false;
 }
 
 static void applySecRel(const SectionChunk *Sec, uint8_t *Off,
@@ -98,7 +116,7 @@ void SectionChunk::applyRelX64(uint8_t *Off, uint16_t 
   case IMAGE_REL_AMD64_SECTION:  applySecIdx(Off, OS); break;
   case IMAGE_REL_AMD64_SECREL:   applySecRel(this, Off, OS, S); break;
   default:
-    fatal("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
+    error("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
           toString(File));
   }
 }
@@ -113,7 +131,7 @@ void SectionChunk::applyRelX86(uint8_t *Off, uint16_t 
   case IMAGE_REL_I386_SECTION:  applySecIdx(Off, OS); break;
   case IMAGE_REL_I386_SECREL:   applySecRel(this, Off, OS, S); break;
   default:
-    fatal("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
+    error("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
           toString(File));
   }
 }
@@ -123,16 +141,22 @@ static void applyMOV(uint8_t *Off, uint16_t V) {
   write16le(Off + 2, (read16le(Off + 2) & 0x8f00) | ((V & 0x700) << 4) | (V & 0xff));
 }
 
-static uint16_t readMOV(uint8_t *Off) {
+static uint16_t readMOV(uint8_t *Off, bool MOVT) {
   uint16_t Op1 = read16le(Off);
+  if ((Op1 & 0xfbf0) != (MOVT ? 0xf2c0 : 0xf240))
+    error("unexpected instruction in " + Twine(MOVT ? "MOVT" : "MOVW") +
+          " instruction in MOV32T relocation");
   uint16_t Op2 = read16le(Off + 2);
+  if ((Op2 & 0x8000) != 0)
+    error("unexpected instruction in " + Twine(MOVT ? "MOVT" : "MOVW") +
+          " instruction in MOV32T relocation");
   return (Op2 & 0x00ff) | ((Op2 >> 4) & 0x0700) | ((Op1 << 1) & 0x0800) |
          ((Op1 & 0x000f) << 12);
 }
 
 void applyMOV32T(uint8_t *Off, uint32_t V) {
-  uint16_t ImmW = readMOV(Off);     // read MOVW operand
-  uint16_t ImmT = readMOV(Off + 4); // read MOVT operand
+  uint16_t ImmW = readMOV(Off, false);    // read MOVW operand
+  uint16_t ImmT = readMOV(Off + 4, true); // read MOVT operand
   uint32_t Imm = ImmW | (ImmT << 16);
   V += Imm;                         // add the immediate offset
   applyMOV(Off, V);           // set MOVW operand
@@ -141,7 +165,7 @@ void applyMOV32T(uint8_t *Off, uint32_t V) {
 
 static void applyBranch20T(uint8_t *Off, int32_t V) {
   if (!isInt<21>(V))
-    fatal("relocation out of range");
+    error("relocation out of range");
   uint32_t S = V < 0 ? 1 : 0;
   uint32_t J1 = (V >> 19) & 1;
   uint32_t J2 = (V >> 18) & 1;
@@ -151,7 +175,7 @@ static void applyBranch20T(uint8_t *Off, int32_t V) {
 
 void applyBranch24T(uint8_t *Off, int32_t V) {
   if (!isInt<25>(V))
-    fatal("relocation out of range");
+    error("relocation out of range");
   uint32_t S = V < 0 ? 1 : 0;
   uint32_t J1 = ((~V >> 23) & 1) ^ S;
   uint32_t J2 = ((~V >> 22) & 1) ^ S;
@@ -176,7 +200,7 @@ void SectionChunk::applyRelARM(uint8_t *Off, uint16_t 
   case IMAGE_REL_ARM_SECTION:   applySecIdx(Off, OS); break;
   case IMAGE_REL_ARM_SECREL:    applySecRel(this, Off, OS, S); break;
   default:
-    fatal("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
+    error("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
           toString(File));
   }
 }
@@ -184,7 +208,7 @@ void SectionChunk::applyRelARM(uint8_t *Off, uint16_t 
 // Interpret the existing immediate value as a byte offset to the
 // target symbol, then update the instruction with the immediate as
 // the page offset from the current instruction to the target.
-static void applyArm64Addr(uint8_t *Off, uint64_t S, uint64_t P, int Shift) {
+void applyArm64Addr(uint8_t *Off, uint64_t S, uint64_t P, int Shift) {
   uint32_t Orig = read32le(Off);
   uint64_t Imm = ((Orig >> 29) & 0x3) | ((Orig >> 3) & 0x1FFFFC);
   S += Imm;
@@ -198,7 +222,7 @@ static void applyArm64Addr(uint8_t *Off, uint64_t S, u
 // Update the immediate field in a AARCH64 ldr, str, and add instruction.
 // Optionally limit the range of the written immediate by one or more bits
 // (RangeLimit).
-static void applyArm64Imm(uint8_t *Off, uint64_t Imm, uint32_t RangeLimit) {
+void applyArm64Imm(uint8_t *Off, uint64_t Imm, uint32_t RangeLimit) {
   uint32_t Orig = read32le(Off);
   Imm += (Orig >> 10) & 0xFFF;
   Orig &= ~(0xFFF << 10);
@@ -221,7 +245,7 @@ static void applyArm64Ldr(uint8_t *Off, uint64_t Imm) 
   if ((Orig & 0x4800000) == 0x4800000)
     Size += 4;
   if ((Imm & ((1 << Size) - 1)) != 0)
-    fatal("misaligned ldr/str offset");
+    error("misaligned ldr/str offset");
   applyArm64Imm(Off, Imm >> Size, Size);
 }
 
@@ -250,21 +274,21 @@ static void applySecRelLdr(const SectionChunk *Sec, ui
     applyArm64Ldr(Off, (S - OS->getRVA()) & 0xfff);
 }
 
-static void applyArm64Branch26(uint8_t *Off, int64_t V) {
+void applyArm64Branch26(uint8_t *Off, int64_t V) {
   if (!isInt<28>(V))
-    fatal("relocation out of range");
+    error("relocation out of range");
   or32(Off, (V & 0x0FFFFFFC) >> 2);
 }
 
 static void applyArm64Branch19(uint8_t *Off, int64_t V) {
   if (!isInt<21>(V))
-    fatal("relocation out of range");
+    error("relocation out of range");
   or32(Off, (V & 0x001FFFFC) << 3);
 }
 
 static void applyArm64Branch14(uint8_t *Off, int64_t V) {
   if (!isInt<16>(V))
-    fatal("relocation out of range");
+    error("relocation out of range");
   or32(Off, (V & 0x0000FFFC) << 3);
 }
 
@@ -287,11 +311,37 @@ void SectionChunk::applyRelARM64(uint8_t *Off, uint16_
   case IMAGE_REL_ARM64_SECREL_LOW12L:  applySecRelLdr(this, Off, OS, S); break;
   case IMAGE_REL_ARM64_SECTION:        applySecIdx(Off, OS); break;
   default:
-    fatal("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
+    error("unsupported relocation type 0x" + Twine::utohexstr(Type) + " in " +
           toString(File));
   }
 }
 
+static void maybeReportRelocationToDiscarded(const SectionChunk *FromChunk,
+                                             Defined *Sym,
+                                             const coff_relocation &Rel) {
+  // Don't report these errors when the relocation comes from a debug info
+  // section or in mingw mode. MinGW mode object files (built by GCC) can
+  // have leftover sections with relocations against discarded comdat
+  // sections. Such sections are left as is, with relocations untouched.
+  if (FromChunk->isCodeView() || FromChunk->isDWARF() || Config->MinGW)
+    return;
+
+  // Get the name of the symbol. If it's null, it was discarded early, so we
+  // have to go back to the object file.
+  ObjFile *File = FromChunk->File;
+  StringRef Name;
+  if (Sym) {
+    Name = Sym->getName();
+  } else {
+    COFFSymbolRef COFFSym =
+        check(File->getCOFFObj()->getSymbol(Rel.SymbolTableIndex));
+    File->getCOFFObj()->getSymbolName(COFFSym, Name);
+  }
+
+  error("relocation against symbol in discarded section: " + Name +
+        getSymbolLocations(File, Rel.SymbolTableIndex));
+}
+
 void SectionChunk::writeTo(uint8_t *Buf) const {
   if (!hasData())
     return;
@@ -302,46 +352,40 @@ void SectionChunk::writeTo(uint8_t *Buf) const {
 
   // Apply relocations.
   size_t InputSize = getSize();
-  for (const coff_relocation &Rel : Relocs) {
+  for (size_t I = 0, E = Relocs.size(); I < E; I++) {
+    const coff_relocation &Rel = Relocs[I];
+
     // Check for an invalid relocation offset. This check isn't perfect, because
     // we don't have the relocation size, which is only known after checking the
     // machine and relocation type. As a result, a relocation may overwrite the
     // beginning of the following input section.
-    if (Rel.VirtualAddress >= InputSize)
-      fatal("relocation points beyond the end of its parent section");
+    if (Rel.VirtualAddress >= InputSize) {
+      error("relocation points beyond the end of its parent section");
+      continue;
+    }
 
     uint8_t *Off = Buf + OutputSectionOff + Rel.VirtualAddress;
 
+    // Use the potentially remapped Symbol instead of the one that the
+    // relocation points to.
+    auto *Sym = dyn_cast_or_null<Defined>(RelocTargets[I]);
+
     // Get the output section of the symbol for this relocation.  The output
     // section is needed to compute SECREL and SECTION relocations used in debug
     // info.
-    auto *Sym =
-        dyn_cast_or_null<Defined>(File->getSymbol(Rel.SymbolTableIndex));
-    if (!Sym) {
-      if (isCodeView() || isDWARF())
-        continue;
-      // Symbols in early discarded sections are represented using null pointers,
-      // so we need to retrieve the name from the object file.
-      COFFSymbolRef Sym =
-          check(File->getCOFFObj()->getSymbol(Rel.SymbolTableIndex));
-      StringRef Name;
-      File->getCOFFObj()->getSymbolName(Sym, Name);
-      fatal("relocation against symbol in discarded section: " + Name);
-    }
-    Chunk *C = Sym->getChunk();
+    Chunk *C = Sym ? Sym->getChunk() : nullptr;
     OutputSection *OS = C ? C->getOutputSection() : nullptr;
 
-    // Only absolute and __ImageBase symbols lack an output section. For any
-    // other symbol, this indicates that the chunk was discarded.  Normally
-    // relocations against discarded sections are an error.  However, debug info
-    // sections are not GC roots and can end up with these kinds of relocations.
-    // Skip these relocations.
-    if (!OS && !isa<DefinedAbsolute>(Sym) && !isa<DefinedSynthetic>(Sym)) {
-      if (isCodeView() || isDWARF())
-        continue;
-      fatal("relocation against symbol in discarded section: " +
-            Sym->getName());
+    // Skip the relocation if it refers to a discarded section, and diagnose it
+    // as an error if appropriate. If a symbol was discarded early, it may be
+    // null. If it was discarded late, the output section will be null, unless
+    // it was an absolute or synthetic symbol.
+    if (!Sym ||
+        (!OS && !isa<DefinedAbsolute>(Sym) && !isa<DefinedSynthetic>(Sym))) {
+      maybeReportRelocationToDiscarded(this, Sym, Rel);
+      continue;
     }
+
     uint64_t S = Sym->getRVA();
 
     // Compute the RVA of the relocation for relative relocations.
@@ -399,17 +443,125 @@ static uint8_t getBaserelType(const coff_relocation &R
 // fixed by the loader if load-time relocation is needed.
 // Only called when base relocation is enabled.
 void SectionChunk::getBaserels(std::vector<Baserel> *Res) {
-  for (const coff_relocation &Rel : Relocs) {
+  for (size_t I = 0, E = Relocs.size(); I < E; I++) {
+    const coff_relocation &Rel = Relocs[I];
     uint8_t Ty = getBaserelType(Rel);
     if (Ty == IMAGE_REL_BASED_ABSOLUTE)
       continue;
-    Symbol *Target = File->getSymbol(Rel.SymbolTableIndex);
+    // Use the potentially remapped Symbol instead of the one that the
+    // relocation points to.
+    Symbol *Target = RelocTargets[I];
     if (!Target || isa<DefinedAbsolute>(Target))
       continue;
     Res->emplace_back(RVA + Rel.VirtualAddress, Ty);
   }
 }
 
+// MinGW specific.
+// Check whether a static relocation of type Type can be deferred and
+// handled at runtime as a pseudo relocation (for references to a module
+// local variable, which turned out to actually need to be imported from
+// another DLL) This returns the size the relocation is supposed to update,
+// in bits, or 0 if the relocation cannot be handled as a runtime pseudo
+// relocation.
+static int getRuntimePseudoRelocSize(uint16_t Type) {
+  // Relocations that either contain an absolute address, or a plain
+  // relative offset, since the runtime pseudo reloc implementation
+  // adds 8/16/32/64 bit values to a memory address.
+  //
+  // Given a pseudo relocation entry,
+  //
+  // typedef struct {
+  //   DWORD sym;
+  //   DWORD target;
+  //   DWORD flags;
+  // } runtime_pseudo_reloc_item_v2;
+  //
+  // the runtime relocation performs this adjustment:
+  //     *(base + .target) += *(base + .sym) - (base + .sym)
+  //
+  // This works for both absolute addresses (IMAGE_REL_*_ADDR32/64,
+  // IMAGE_REL_I386_DIR32, where the memory location initially contains
+  // the address of the IAT slot, and for relative addresses (IMAGE_REL*_REL32),
+  // where the memory location originally contains the relative offset to the
+  // IAT slot.
+  //
+  // This requires the target address to be writable, either directly out of
+  // the image, or temporarily changed at runtime with VirtualProtect.
+  // Since this only operates on direct address values, it doesn't work for
+  // ARM/ARM64 relocations, other than the plain ADDR32/ADDR64 relocations.
+  switch (Config->Machine) {
+  case AMD64:
+    switch (Type) {
+    case IMAGE_REL_AMD64_ADDR64:
+      return 64;
+    case IMAGE_REL_AMD64_ADDR32:
+    case IMAGE_REL_AMD64_REL32:
+    case IMAGE_REL_AMD64_REL32_1:
+    case IMAGE_REL_AMD64_REL32_2:
+    case IMAGE_REL_AMD64_REL32_3:
+    case IMAGE_REL_AMD64_REL32_4:
+    case IMAGE_REL_AMD64_REL32_5:
+      return 32;
+    default:
+      return 0;
+    }
+  case I386:
+    switch (Type) {
+    case IMAGE_REL_I386_DIR32:
+    case IMAGE_REL_I386_REL32:
+      return 32;
+    default:
+      return 0;
+    }
+  case ARMNT:
+    switch (Type) {
+    case IMAGE_REL_ARM_ADDR32:
+      return 32;
+    default:
+      return 0;
+    }
+  case ARM64:
+    switch (Type) {
+    case IMAGE_REL_ARM64_ADDR64:
+      return 64;
+    case IMAGE_REL_ARM64_ADDR32:
+      return 32;
+    default:
+      return 0;
+    }
+  default:
+    llvm_unreachable("unknown machine type");
+  }
+}
+
+// MinGW specific.
+// Append information to the provided vector about all relocations that
+// need to be handled at runtime as runtime pseudo relocations (references
+// to a module local variable, which turned out to actually need to be
+// imported from another DLL).
+void SectionChunk::getRuntimePseudoRelocs(
+    std::vector<RuntimePseudoReloc> &Res) {
+  for (const coff_relocation &Rel : Relocs) {
+    auto *Target =
+        dyn_cast_or_null<Defined>(File->getSymbol(Rel.SymbolTableIndex));
+    if (!Target || !Target->IsRuntimePseudoReloc)
+      continue;
+    int SizeInBits = getRuntimePseudoRelocSize(Rel.Type);
+    if (SizeInBits == 0) {
+      error("unable to automatically import from " + Target->getName() +
+            " with relocation type " +
+            File->getCOFFObj()->getRelocationTypeName(Rel.Type) + " in " +
+            toString(File));
+      continue;
+    }
+    // SizeInBits is used to initialize the Flags field; currently no
+    // other flags are defined.
+    Res.emplace_back(
+        RuntimePseudoReloc(Target, this, Rel.VirtualAddress, SizeInBits));
+  }
+}
+
 bool SectionChunk::hasData() const {
   return !(Header->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA);
 }
@@ -447,6 +599,13 @@ void SectionChunk::replace(SectionChunk *Other) {
   Other->Live = false;
 }
 
+uint32_t SectionChunk::getSectionNumber() const {
+  DataRefImpl R;
+  R.p = reinterpret_cast<uintptr_t>(Header);
+  SectionRef S(R, File->getCOFFObj());
+  return S.getIndex() + 1;
+}
+
 CommonChunk::CommonChunk(const COFFSymbolRef S) : Sym(S) {
   // Common symbols are aligned on natural boundaries up to 32 bytes.
   // This is what MSVC link.exe does.
@@ -460,6 +619,7 @@ uint32_t CommonChunk::getOutputCharacteristics() const
 
 void StringChunk::writeTo(uint8_t *Buf) const {
   memcpy(Buf + OutputSectionOff, Str.data(), Str.size());
+  Buf[OutputSectionOff + Str.size()] = '\0';
 }
 
 ImportThunkChunkX64::ImportThunkChunkX64(Defined *S) : ImpSymbol(S) {
@@ -502,13 +662,30 @@ void ImportThunkChunkARM64::writeTo(uint8_t *Buf) cons
   applyArm64Ldr(Buf + OutputSectionOff + 4, Off);
 }
 
+// A Thumb2, PIC, non-interworking range extension thunk.
+const uint8_t ArmThunk[] = {
+    0x40, 0xf2, 0x00, 0x0c, // P:  movw ip,:lower16:S - (P + (L1-P) + 4)
+    0xc0, 0xf2, 0x00, 0x0c, //     movt ip,:upper16:S - (P + (L1-P) + 4)
+    0xe7, 0x44,             // L1: add  pc, ip
+};
+
+size_t RangeExtensionThunk::getSize() const {
+  assert(Config->Machine == ARMNT);
+  return sizeof(ArmThunk);
+}
+
+void RangeExtensionThunk::writeTo(uint8_t *Buf) const {
+  assert(Config->Machine == ARMNT);
+  uint64_t Offset = Target->getRVA() - RVA - 12;
+  memcpy(Buf + OutputSectionOff, ArmThunk, sizeof(ArmThunk));
+  applyMOV32T(Buf + OutputSectionOff, uint32_t(Offset));
+}
+
 void LocalImportChunk::getBaserels(std::vector<Baserel> *Res) {
   Res->emplace_back(getRVA());
 }
 
-size_t LocalImportChunk::getSize() const {
-  return Config->is64() ? 8 : 4;
-}
+size_t LocalImportChunk::getSize() const { return Config->Wordsize; }
 
 void LocalImportChunk::writeTo(uint8_t *Buf) const {
   if (Config->is64()) {
@@ -528,6 +705,34 @@ void RVATableChunk::writeTo(uint8_t *Buf) const {
          "RVA tables should be de-duplicated");
 }
 
+// MinGW specific, for the "automatic import of variables from DLLs" feature.
+size_t PseudoRelocTableChunk::getSize() const {
+  if (Relocs.empty())
+    return 0;
+  return 12 + 12 * Relocs.size();
+}
+
+// MinGW specific.
+void PseudoRelocTableChunk::writeTo(uint8_t *Buf) const {
+  if (Relocs.empty())
+    return;
+
+  ulittle32_t *Table = reinterpret_cast<ulittle32_t *>(Buf + OutputSectionOff);
+  // This is the list header, to signal the runtime pseudo relocation v2
+  // format.
+  Table[0] = 0;
+  Table[1] = 0;
+  Table[2] = 1;
+
+  size_t Idx = 3;
+  for (const RuntimePseudoReloc &RPR : Relocs) {
+    Table[Idx + 0] = RPR.Sym->getRVA();
+    Table[Idx + 1] = RPR.Target->getRVA() + RPR.TargetOffset;
+    Table[Idx + 2] = RPR.Flags;
+    Idx += 3;
+  }
+}
+
 // Windows-specific. This class represents a block in .reloc section.
 // The format is described here.
 //
@@ -613,13 +818,16 @@ void MergeChunk::addSection(SectionChunk *C) {
 }
 
 void MergeChunk::finalizeContents() {
-  for (SectionChunk *C : Sections)
-    if (C->isLive())
-      Builder.add(toStringRef(C->getContents()));
-  Builder.finalize();
+  if (!Finalized) {
+    for (SectionChunk *C : Sections)
+      if (C->Live)
+        Builder.add(toStringRef(C->getContents()));
+    Builder.finalize();
+    Finalized = true;
+  }
 
   for (SectionChunk *C : Sections) {
-    if (!C->isLive())
+    if (!C->Live)
       continue;
     size_t Off = Builder.getOffset(toStringRef(C->getContents()));
     C->setOutputSection(Out);
@@ -638,6 +846,17 @@ size_t MergeChunk::getSize() const {
 
 void MergeChunk::writeTo(uint8_t *Buf) const {
   Builder.write(Buf + OutputSectionOff);
+}
+
+// MinGW specific.
+size_t AbsolutePointerChunk::getSize() const { return Config->Wordsize; }
+
+void AbsolutePointerChunk::writeTo(uint8_t *Buf) const {
+  if (Config->is64()) {
+    write64le(Buf + OutputSectionOff, Value);
+  } else {
+    write32le(Buf + OutputSectionOff, Value);
+  }
 }
 
 } // namespace coff

Modified: vendor/lld/dist/COFF/Chunks.h
==============================================================================
--- vendor/lld/dist/COFF/Chunks.h	Sat Jan 19 10:05:41 2019	(r343178)
+++ vendor/lld/dist/COFF/Chunks.h	Sat Jan 19 10:05:49 2019	(r343179)
@@ -36,6 +36,7 @@ class DefinedImportData;
 class DefinedRegular;
 class ObjFile;
 class OutputSection;
+class RuntimePseudoReloc;
 class Symbol;
 
 // Mask for permissions (discardable, writable, readable, executable, etc).
@@ -63,6 +64,13 @@ class Chunk { (public)
   // before calling this function.
   virtual void writeTo(uint8_t *Buf) const {}
 
+  // Called by the writer once before assigning addresses and writing
+  // the output.
+  virtual void readRelocTargets() {}
+
+  // Called if restarting thunk addition.
+  virtual void resetRelocTargets() {}
+
   // Called by the writer after an RVA is assigned, but before calling
   // getSize().
   virtual void finalizeContents() {}
@@ -114,6 +122,10 @@ class Chunk { (public)
 public:
   // The offset from beginning of the output section. The writer sets a value.
   uint64_t OutputSectionOff = 0;
+
+  // Whether this section needs to be kept distinct from other sections during
+  // ICF. This is set by the driver using address-significance tables.
+  bool KeepUnique = false;
 };
 
 // A chunk corresponding a section of an input file.
@@ -140,6 +152,8 @@ class SectionChunk final : public Chunk { (public)
 
   SectionChunk(ObjFile *File, const coff_section *Header);
   static bool classof(const Chunk *C) { return C->kind() == SectionKind; }
+  void readRelocTargets() override;
+  void resetRelocTargets() override;
   size_t getSize() const override { return Header->SizeOfRawData; }
   ArrayRef<uint8_t> getContents() const;
   void writeTo(uint8_t *Buf) const override;
@@ -157,6 +171,8 @@ class SectionChunk final : public Chunk { (public)
   void applyRelARM64(uint8_t *Off, uint16_t Type, OutputSection *OS, uint64_t S,
                      uint64_t P) const;
 
+  void getRuntimePseudoRelocs(std::vector<RuntimePseudoReloc> &Res);
+
   // Called if the garbage collector decides to not include this chunk
   // in a final output. It's supposed to print out a log message to stdout.
   void printDiscardedMessage() const;
@@ -167,16 +183,6 @@ class SectionChunk final : public Chunk { (public)
 
   StringRef getDebugName() override;
 
-  // Returns true if the chunk was not dropped by GC.
-  bool isLive() { return Live; }
-
-  // Used by the garbage collector.
-  void markLive() {
-    assert(Config->DoGC && "should only mark things live from GC");
-    assert(!isLive() && "Cannot mark an already live section!");
-    Live = true;
-  }
-
   // True if this is a codeview debug info chunk. These will not be laid out in
   // the image. Instead they will end up in the PDB, if one is requested.
   bool isCodeView() const {
@@ -197,10 +203,13 @@ class SectionChunk final : public Chunk { (public)
   // Allow iteration over the associated child chunks for this section.
   ArrayRef<SectionChunk *> children() const { return AssocChildren; }
 
+  // The section ID this chunk belongs to in its Obj.
+  uint32_t getSectionNumber() const;
+
   // A pointer pointing to a replacement for this chunk.
   // Initially it points to "this" object. If this chunk is merged
   // with other chunk by ICF, it points to another chunk,
-  // and this chunk is considrered as dead.
+  // and this chunk is considered as dead.
   SectionChunk *Repl;
 
   // The CRC of the contents as described in the COFF spec 4.5.5.
@@ -217,13 +226,17 @@ class SectionChunk final : public Chunk { (public)
 
   ArrayRef<coff_relocation> Relocs;
 
+  // Used by the garbage collector.
+  bool Live;
+
+  // When inserting a thunk, we need to adjust a relocation to point to
+  // the thunk instead of the actual original target Symbol.
+  std::vector<Symbol *> RelocTargets;
+
 private:
   StringRef SectionName;
   std::vector<SectionChunk *> AssocChildren;
 
-  // Used by the garbage collector.
-  bool Live;
-
   // Used for ICF (Identical COMDAT Folding)
   void replace(SectionChunk *Other);
   uint32_t Class[2] = {0, 0};
@@ -254,6 +267,7 @@ class MergeChunk : public Chunk { (public)
 
 private:
   llvm::StringTableBuilder Builder;
+  bool Finalized = false;
 };
 
 // A chunk for common symbols. Common chunks don't have actual data.
@@ -297,7 +311,7 @@ static const uint8_t ImportThunkARM64[] = {
 };
 
 // Windows-specific.
-// A chunk for DLL import jump table entry. In a final output, it's
+// A chunk for DLL import jump table entry. In a final output, its
 // contents will be a JMP instruction to some __imp_ symbol.
 class ImportThunkChunkX64 : public Chunk {
 public:
@@ -341,11 +355,22 @@ class ImportThunkChunkARM64 : public Chunk { (private)
   Defined *ImpSymbol;
 };
 
+class RangeExtensionThunk : public Chunk {
+public:
+  explicit RangeExtensionThunk(Defined *T) : Target(T) {}
+  size_t getSize() const override;
+  void writeTo(uint8_t *Buf) const override;
+
+  Defined *Target;
+};
+
 // Windows-specific.
 // See comments for DefinedLocalImport class.
 class LocalImportChunk : public Chunk {
 public:
-  explicit LocalImportChunk(Defined *S) : Sym(S) {}
+  explicit LocalImportChunk(Defined *S) : Sym(S) {
+    Alignment = Config->Wordsize;
+  }
   size_t getSize() const override;
   void getBaserels(std::vector<Baserel> *Res) override;
   void writeTo(uint8_t *Buf) const override;
@@ -414,8 +439,72 @@ class Baserel { (public)
   uint8_t Type;
 };
 
+// This is a placeholder Chunk, to allow attaching a DefinedSynthetic to a
+// specific place in a section, without any data. This is used for the MinGW
+// specific symbol __RUNTIME_PSEUDO_RELOC_LIST_END__, even though the concept
+// of an empty chunk isn't MinGW specific.
+class EmptyChunk : public Chunk {
+public:
+  EmptyChunk() {}
+  size_t getSize() const override { return 0; }
+  void writeTo(uint8_t *Buf) const override {}
+};
+
+// MinGW specific, for the "automatic import of variables from DLLs" feature.
+// This provides the table of runtime pseudo relocations, for variable
+// references that turned out to need to be imported from a DLL even though
+// the reference didn't use the dllimport attribute. The MinGW runtime will
+// process this table after loading, before handling control over to user
+// code.
+class PseudoRelocTableChunk : public Chunk {
+public:
+  PseudoRelocTableChunk(std::vector<RuntimePseudoReloc> &Relocs)
+      : Relocs(std::move(Relocs)) {
+    Alignment = 4;
+  }
+  size_t getSize() const override;
+  void writeTo(uint8_t *Buf) const override;
+
+private:
+  std::vector<RuntimePseudoReloc> Relocs;
+};
+
+// MinGW specific; information about one individual location in the image
+// that needs to be fixed up at runtime after loading. This represents
+// one individual element in the PseudoRelocTableChunk table.
+class RuntimePseudoReloc {
+public:
+  RuntimePseudoReloc(Defined *Sym, SectionChunk *Target, uint32_t TargetOffset,
+                     int Flags)
+      : Sym(Sym), Target(Target), TargetOffset(TargetOffset), Flags(Flags) {}
+
+  Defined *Sym;
+  SectionChunk *Target;
+  uint32_t TargetOffset;
+  // The Flags field contains the size of the relocation, in bits. No other
+  // flags are currently defined.
+  int Flags;
+};
+
+// MinGW specific. A Chunk that contains one pointer-sized absolute value.
+class AbsolutePointerChunk : public Chunk {
+public:
+  AbsolutePointerChunk(uint64_t Value) : Value(Value) {
+    Alignment = getSize();
+  }
+  size_t getSize() const override;
+  void writeTo(uint8_t *Buf) const override;
+
+private:
+  uint64_t Value;
+};
+
 void applyMOV32T(uint8_t *Off, uint32_t V);
 void applyBranch24T(uint8_t *Off, int32_t V);
+
+void applyArm64Addr(uint8_t *Off, uint64_t S, uint64_t P, int Shift);
+void applyArm64Imm(uint8_t *Off, uint64_t Imm, uint32_t RangeLimit);
+void applyArm64Branch26(uint8_t *Off, int64_t V);
 
 } // namespace coff
 } // namespace lld

Modified: vendor/lld/dist/COFF/Config.h
==============================================================================
--- vendor/lld/dist/COFF/Config.h	Sat Jan 19 10:05:41 2019	(r343178)
+++ vendor/lld/dist/COFF/Config.h	Sat Jan 19 10:05:49 2019	(r343179)
@@ -84,6 +84,7 @@ struct Configuration {
   bool is64() { return Machine == AMD64 || Machine == ARM64; }
 
   llvm::COFF::MachineTypes Machine = IMAGE_FILE_MACHINE_UNKNOWN;
+  size_t Wordsize;
   bool Verbose = false;
   WindowsSubsystem Subsystem = llvm::COFF::IMAGE_SUBSYSTEM_UNKNOWN;
   Symbol *Entry = nullptr;
@@ -94,7 +95,8 @@ struct Configuration {
   bool DoICF = true;
   bool TailMerge;
   bool Relocatable = true;
-  bool Force = false;
+  bool ForceMultiple = false;
+  bool ForceUnresolved = false;
   bool Debug = false;
   bool DebugDwarf = false;
   bool DebugGHashes = false;
@@ -195,6 +197,7 @@ struct Configuration {
   bool MinGW = false;
   bool WarnMissingOrderSymbol = true;
   bool WarnLocallyDefinedImported = true;
+  bool WarnDebugInfoUnusable = true;
   bool Incremental = true;
   bool IntegrityCheck = false;
   bool KillAt = false;

Modified: vendor/lld/dist/COFF/DLL.cpp
==============================================================================
--- vendor/lld/dist/COFF/DLL.cpp	Sat Jan 19 10:05:41 2019	(r343178)
+++ vendor/lld/dist/COFF/DLL.cpp	Sat Jan 19 10:05:49 2019	(r343179)
@@ -35,8 +35,6 @@ namespace {
 
 // Import table
 
-static int ptrSize() { return Config->is64() ? 8 : 4; }
-
 // A chunk for the import descriptor table.
 class HintNameChunk : public Chunk {
 public:
@@ -61,8 +59,8 @@ class HintNameChunk : public Chunk { (private)
 // A chunk for the import descriptor table.
 class LookupChunk : public Chunk {
 public:
-  explicit LookupChunk(Chunk *C) : HintName(C) { Alignment = ptrSize(); }
-  size_t getSize() const override { return ptrSize(); }
+  explicit LookupChunk(Chunk *C) : HintName(C) { Alignment = Config->Wordsize; }
+  size_t getSize() const override { return Config->Wordsize; }
 
   void writeTo(uint8_t *Buf) const override {
     write32le(Buf + OutputSectionOff, HintName->getRVA());
@@ -76,8 +74,10 @@ class LookupChunk : public Chunk { (public)
 // See Microsoft PE/COFF spec 7.1. Import Header for details.
 class OrdinalOnlyChunk : public Chunk {
 public:
-  explicit OrdinalOnlyChunk(uint16_t V) : Ordinal(V) { Alignment = ptrSize(); }
-  size_t getSize() const override { return ptrSize(); }
+  explicit OrdinalOnlyChunk(uint16_t V) : Ordinal(V) {
+    Alignment = Config->Wordsize;
+  }
+  size_t getSize() const override { return Config->Wordsize; }
 
   void writeTo(uint8_t *Buf) const override {
     // An import-by-ordinal slot has MSB 1 to indicate that
@@ -230,6 +230,36 @@ static const uint8_t ThunkARM[] = {
     0x60, 0x47,             // bx      ip
 };
 
+static const uint8_t ThunkARM64[] = {
+    0x11, 0x00, 0x00, 0x90, // adrp    x17, #0      __imp_<FUNCNAME>
+    0x31, 0x02, 0x00, 0x91, // add     x17, x17, #0 :lo12:__imp_<FUNCNAME>
+    0xfd, 0x7b, 0xb3, 0xa9, // stp     x29, x30, [sp, #-208]!
+    0xfd, 0x03, 0x00, 0x91, // mov     x29, sp
+    0xe0, 0x07, 0x01, 0xa9, // stp     x0, x1, [sp, #16]
+    0xe2, 0x0f, 0x02, 0xa9, // stp     x2, x3, [sp, #32]
+    0xe4, 0x17, 0x03, 0xa9, // stp     x4, x5, [sp, #48]
+    0xe6, 0x1f, 0x04, 0xa9, // stp     x6, x7, [sp, #64]
+    0xe0, 0x87, 0x02, 0xad, // stp     q0, q1, [sp, #80]
+    0xe2, 0x8f, 0x03, 0xad, // stp     q2, q3, [sp, #112]
+    0xe4, 0x97, 0x04, 0xad, // stp     q4, q5, [sp, #144]
+    0xe6, 0x9f, 0x05, 0xad, // stp     q6, q7, [sp, #176]
+    0xe1, 0x03, 0x11, 0xaa, // mov     x1, x17
+    0x00, 0x00, 0x00, 0x90, // adrp    x0, #0     DELAY_IMPORT_DESCRIPTOR
+    0x00, 0x00, 0x00, 0x91, // add     x0, x0, #0 :lo12:DELAY_IMPORT_DESCRIPTOR
+    0x00, 0x00, 0x00, 0x94, // bl      #0 __delayLoadHelper2
+    0xf0, 0x03, 0x00, 0xaa, // mov     x16, x0
+    0xe6, 0x9f, 0x45, 0xad, // ldp     q6, q7, [sp, #176]
+    0xe4, 0x97, 0x44, 0xad, // ldp     q4, q5, [sp, #144]
+    0xe2, 0x8f, 0x43, 0xad, // ldp     q2, q3, [sp, #112]
+    0xe0, 0x87, 0x42, 0xad, // ldp     q0, q1, [sp, #80]
+    0xe6, 0x1f, 0x44, 0xa9, // ldp     x6, x7, [sp, #64]
+    0xe4, 0x17, 0x43, 0xa9, // ldp     x4, x5, [sp, #48]
+    0xe2, 0x0f, 0x42, 0xa9, // ldp     x2, x3, [sp, #32]
+    0xe0, 0x07, 0x41, 0xa9, // ldp     x0, x1, [sp, #16]
+    0xfd, 0x7b, 0xcd, 0xa8, // ldp     x29, x30, [sp], #208
+    0x00, 0x02, 0x1f, 0xd6, // br      x16
+};
+
 // A chunk for the delay import thunk.
 class ThunkChunkX64 : public Chunk {
 public:
@@ -298,11 +328,35 @@ class ThunkChunkARM : public Chunk { (public)
   Defined *Helper = nullptr;
 };
 
+class ThunkChunkARM64 : public Chunk {
+public:
+  ThunkChunkARM64(Defined *I, Chunk *D, Defined *H)
+      : Imp(I), Desc(D), Helper(H) {}
+
+  size_t getSize() const override { return sizeof(ThunkARM64); }
+
+  void writeTo(uint8_t *Buf) const override {
+    memcpy(Buf + OutputSectionOff, ThunkARM64, sizeof(ThunkARM64));
+    applyArm64Addr(Buf + OutputSectionOff + 0, Imp->getRVA(), RVA + 0, 12);
+    applyArm64Imm(Buf + OutputSectionOff + 4, Imp->getRVA() & 0xfff, 0);
+    applyArm64Addr(Buf + OutputSectionOff + 52, Desc->getRVA(), RVA + 52, 12);
+    applyArm64Imm(Buf + OutputSectionOff + 56, Desc->getRVA() & 0xfff, 0);
+    applyArm64Branch26(Buf + OutputSectionOff + 60,
+                       Helper->getRVA() - RVA - 60);
+  }
+
+  Defined *Imp = nullptr;
+  Chunk *Desc = nullptr;
+  Defined *Helper = nullptr;
+};
+
 // A chunk for the import descriptor table.
 class DelayAddressChunk : public Chunk {
 public:
-  explicit DelayAddressChunk(Chunk *C) : Thunk(C) { Alignment = ptrSize(); }
-  size_t getSize() const override { return ptrSize(); }
+  explicit DelayAddressChunk(Chunk *C) : Thunk(C) {
+    Alignment = Config->Wordsize;
+  }
+  size_t getSize() const override { return Config->Wordsize; }
 
   void writeTo(uint8_t *Buf) const override {
     if (Config->is64()) {
@@ -362,6 +416,8 @@ class AddressTableChunk : public Chunk { (public)
   size_t getSize() const override { return Size * 4; }
 
   void writeTo(uint8_t *Buf) const override {
+    memset(Buf + OutputSectionOff, 0, getSize());
+
     for (const Export &E : Config->Exports) {
       uint8_t *P = Buf + OutputSectionOff + E.Ordinal * 4;
       uint32_t Bit = 0;
@@ -418,30 +474,6 @@ class ExportOrdinalChunk : public Chunk { (private)
 
 } // anonymous namespace
 
-uint64_t IdataContents::getDirSize() {
-  return Dirs.size() * sizeof(ImportDirectoryTableEntry);
-}
-
-uint64_t IdataContents::getIATSize() {
-  return Addresses.size() * ptrSize();
-}
-
-// Returns a list of .idata contents.
-// See Microsoft PE/COFF spec 5.4 for details.
-std::vector<Chunk *> IdataContents::getChunks() {
-  create();
-
-  // The loader assumes a specific order of data.
-  // Add each type in the correct order.
-  std::vector<Chunk *> V;
-  V.insert(V.end(), Dirs.begin(), Dirs.end());
-  V.insert(V.end(), Lookups.begin(), Lookups.end());
-  V.insert(V.end(), Addresses.begin(), Addresses.end());
-  V.insert(V.end(), Hints.begin(), Hints.end());
-  V.insert(V.end(), DLLNames.begin(), DLLNames.end());
-  return V;
-}
-
 void IdataContents::create() {
   std::vector<std::vector<DefinedImportData *>> V = binImports(Imports);
 
@@ -465,8 +497,8 @@ void IdataContents::create() {
       Hints.push_back(C);
     }
     // Terminate with null values.
-    Lookups.push_back(make<NullChunk>(ptrSize()));
-    Addresses.push_back(make<NullChunk>(ptrSize()));
+    Lookups.push_back(make<NullChunk>(Config->Wordsize));
+    Addresses.push_back(make<NullChunk>(Config->Wordsize));
 
     for (int I = 0, E = Syms.size(); I < E; ++I)
       Syms[I]->setLocation(Addresses[Base + I]);
@@ -555,6 +587,8 @@ Chunk *DelayLoadContents::newThunkChunk(DefinedImportD
     return make<ThunkChunkX86>(S, Dir, Helper);
   case ARMNT:
     return make<ThunkChunkARM>(S, Dir, Helper);
+  case ARM64:
+    return make<ThunkChunkARM64>(S, Dir, Helper);
   default:
     llvm_unreachable("unsupported machine type");
   }

Modified: vendor/lld/dist/COFF/DLL.h
==============================================================================
--- vendor/lld/dist/COFF/DLL.h	Sat Jan 19 10:05:41 2019	(r343178)
+++ vendor/lld/dist/COFF/DLL.h	Sat Jan 19 10:05:49 2019	(r343179)
@@ -19,19 +19,12 @@ namespace coff {
 // Windows-specific.
 // IdataContents creates all chunks for the DLL import table.
 // You are supposed to call add() to add symbols and then
-// call getChunks() to get a list of chunks.
+// call create() to populate the chunk vectors.
 class IdataContents {
 public:
   void add(DefinedImportData *Sym) { Imports.push_back(Sym); }
   bool empty() { return Imports.empty(); }
-  std::vector<Chunk *> getChunks();
 
-  uint64_t getDirRVA() { return Dirs[0]->getRVA(); }
-  uint64_t getDirSize();
-  uint64_t getIATRVA() { return Addresses[0]->getRVA(); }
-  uint64_t getIATSize();
-
-private:
   void create();
 
   std::vector<DefinedImportData *> Imports;

Modified: vendor/lld/dist/COFF/Driver.cpp
==============================================================================
--- vendor/lld/dist/COFF/Driver.cpp	Sat Jan 19 10:05:41 2019	(r343178)
+++ vendor/lld/dist/COFF/Driver.cpp	Sat Jan 19 10:05:49 2019	(r343179)
@@ -32,6 +32,7 @@
 #include "llvm/Option/ArgList.h"
 #include "llvm/Option/Option.h"
 #include "llvm/Support/Debug.h"
+#include "llvm/Support/LEB128.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Process.h"
 #include "llvm/Support/TarWriter.h"
@@ -56,7 +57,7 @@ Configuration *Config;
 LinkerDriver *Driver;
 
 bool link(ArrayRef<const char *> Args, bool CanExitEarly, raw_ostream &Diag) {
-  errorHandler().LogName = sys::path::filename(Args[0]);
+  errorHandler().LogName = args::getFilenameWithoutExe(Args[0]);
   errorHandler().ErrorOS = &Diag;
   errorHandler().ColorDiagnostics = Diag.has_colors();
   errorHandler().ErrorLimitExceededMsg =
@@ -116,6 +117,19 @@ static std::future<MBErrPair> createFutureForFile(std:
   });
 }
 
+// Symbol names are mangled by prepending "_" on x86.
+static StringRef mangle(StringRef Sym) {
+  assert(Config->Machine != IMAGE_FILE_MACHINE_UNKNOWN);

*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
