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from b76b470 [InstCombine] Simplify and correct folding fcmps with the sam [...] new 0b21d88 Change Archive::create() from ErrorOr<...> to Expected<...> a [...] new 6a40504 StackColoring for SafeStack.

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Summary of changes: include/llvm/Object/Archive.h | 4 +- lib/CodeGen/CMakeLists.txt | 2 + lib/CodeGen/SafeStack.cpp | 88 +++--- lib/CodeGen/SafeStackColoring.cpp | 289 ++++++++++++++++++++ lib/CodeGen/SafeStackColoring.h | 149 ++++++++++ lib/CodeGen/SafeStackLayout.cpp | 138 ++++++++++ lib/CodeGen/SafeStackLayout.h | 68 +++++ lib/Object/Archive.cpp | 43 +-- lib/Object/Binary.cpp | 2 +- lib/Object/MachOUniversal.cpp | 2 +- test/Transforms/SafeStack/coloring.ll | 44 +++ test/Transforms/SafeStack/coloring2.ll | 482 +++++++++++++++++++++++++++++++++ tools/dsymutil/BinaryHolder.cpp | 4 +- tools/lli/lli.cpp | 10 +- tools/llvm-ar/llvm-ar.cpp | 7 +- 15 files changed, 1265 insertions(+), 67 deletions(-) create mode 100644 lib/CodeGen/SafeStackColoring.cpp create mode 100644 lib/CodeGen/SafeStackColoring.h create mode 100644 lib/CodeGen/SafeStackLayout.cpp create mode 100644 lib/CodeGen/SafeStackLayout.h create mode 100644 test/Transforms/SafeStack/coloring.ll create mode 100644 test/Transforms/SafeStack/coloring2.ll