[PATCH] D140474: [YAML IO] Check that mapping doesn't contain duplicating keys

[Anton Sidorenko via Phabricator via llvm-commits]

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According to YAML specification keys must be unique for a mapping node:
"The content of a mapping node is an unordered set of key/value node pairs, with
the restriction that each of the keys is unique".


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D140474

Files:
  llvm/lib/Support/YAMLTraits.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/select-int-ext.mir
  llvm/test/CodeGen/ARM/machine-sink-multidef.mir
  llvm/test/CodeGen/PowerPC/jump-tables-collapse-rotate-remove-SrcMI.mir
  llvm/test/CodeGen/PowerPC/mi-peephole.mir
  llvm/test/CodeGen/X86/fixup-bw-inst.mir
  llvm/test/tools/llvm-objcopy/COFF/redefine-symbol.test
  llvm/test/tools/llvm-objcopy/ELF/strip-all-gnu.test
  llvm/test/tools/llvm-reduce/mir/preserve-func-info.mir
  llvm/test/tools/yaml2obj/map_duplicate_key.test
  llvm/test/tools/yaml2obj/map_duplicate_key_2.test
  llvm/unittests/Support/YAMLIOTest.cpp
  llvm/unittests/TextAPI/TextStubV4Tests.cpp

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