Front-end Additions and Fixes for Cava

See merge request !22

Fork Guard Elimination

See merge request !21

CPU partition respecting backend

See merge request !20

Juno Frontend

See merge request !19

Integrate plans into pass manager

See merge request !18

Predication pass

See merge request !17

Refactor dot visualization

See merge request !16

Pass manager + forkify

See merge request !15

Cast node

See merge request !14

Basic IR schedules framework

See merge request !13

Add ternary node

See merge request !12

Add zero initializer constants

See merge request !11

Dynamically load object files

See merge request !10

IR development

See merge request !9

Exploratory CPU backend

See merge request !8

Reorganization, global code motion, backward dataflow, loop tree construction, dom tree improvements, collapse region chains in CCP

See merge request !7

Reorganization, global code motion, backward dataflow, loop tree construction, dom tree improvements, collapse region chains in CCP

CCP, DCE, GVN, IR Builder API, improve verification, rewrite dot visualization

See merge request !6

Fix dominator based verification, add structural checks

See merge request !5