Sjoerd Meijer 58156715b4 MachineLoop: add methods findLoopControlBlock and findLoopPreheader ...

This adds two new utility functions findLoopControlBlock and findLoopPreheader
to MachineLoop and MachineLoopInfo. These functions are refactored and taken
from the Hexagon target as they are target independent; thus this is intendend to
be a non-functional change.

Differential Revision: https://reviews.llvm.org/D22959

llvm-svn: 278661

2016-08-15 08:22:42 +00:00

4.1 KiB

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