David Majnemer fd9f47756a [WinEHPrepare] Add rudimentary support for the new EH instructions ...

This adds somewhat basic preparation functionality including:
- Formation of funclets via coloring basic blocks.
- Cloning of polychromatic blocks to ensure that funclets have unique
  program counters.
- Demotion of values used between different funclets.
- Some amount of cleanup once we have removed predecessors from basic
  blocks.
- Verification that we are left with a CFG that makes some amount of
  sense.

N.B. Arguments and numbering still need to be done.

Differential Revision: http://reviews.llvm.org/D11750

llvm-svn: 244558

2015-08-11 01:15:26 +00:00

5.7 KiB

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