[PATCH] MIR Serialization: Serialize the jump table info and the jump table index operands.

[Alex L]

Hi,

The 2 patches below serialize the machine jump table information and the
jump table index operands.

The jump table info is serialized using a YAML mapping that contains its
kind and a YAML sequence of jump table entries. A jump table entry is a
YAML mapping that has an ID and an inline YAML sequence of machine basic
block references. Example:

jumpTable:
  kind:          label-difference32
  entries:
    - id:        0
      blocks:    [ '%bb.3.lbl1', '%bb.4.lbl2', '%bb.5.lbl3', '%bb.6.lbl4' ]


The jump table index operands are serialized using the following syntax:


  %jump-table.<id>


Cheers,

Alex
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