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from 6429bcf [ExecutionEngine] Refactor - Roll JITSymbolFlags functionalit [...] new ca17b84 GVNHoist: Don't hoist convergent calls new 5b8a0c5 GlobalISel: refuse to halve size of 1-byte & odd-sized LLTs. new 6857d7c GlobalISel: implement narrowing for G_ADD.

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Summary of changes: include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h | 22 +++++ include/llvm/CodeGen/LowLevelType.h | 3 +- include/llvm/Target/GenericOpcodes.td | 15 ++++ include/llvm/Target/TargetOpcodes.def | 11 ++- lib/CodeGen/GlobalISel/MachineIRBuilder.cpp | 17 ++++ lib/CodeGen/GlobalISel/MachineLegalizeHelper.cpp | 33 +++++++- lib/Target/AArch64/AArch64MachineLegalizer.cpp | 9 ++- lib/Transforms/Scalar/GVNHoist.cpp | 4 + test/CodeGen/AArch64/GlobalISel/legalize-add.mir | 28 +++++++ test/Transforms/GVN/hoist-convergent.ll | 93 ++++++++++++++++++++++ unittests/CodeGen/LowLevelTypeTest.cpp | 21 ++--- 11 files changed, 242 insertions(+), 14 deletions(-) create mode 100644 test/Transforms/GVN/hoist-convergent.ll