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The canonical form for the extended addressing mode (e.g., "[x1, w2, uxtw #3]" is for the MCInst to have the second register be the full 64-bit GPR64 register class. The instruction printer cleans up the output for display to show the 32-bit register instead, per the specification. This simplifies 205893 now that the aliasing is handled in the printer in 206495 so that the codegen path and the disassembler path give the same MCInst form. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206797 91177308-0d34-0410-b5e6-96231b3b80d8
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