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130a
2010 Jan 13
1
[LLVMdev] Make LoopBase inherit from "RegionBase"?
...split up to create single
entry single exit edges, if they are needed e.g. for code generation.
\ /
1_a
|
1
/ \
2 3
| |
4 6
| |
5 7
\ /
8_a
|
8
/ \
9 10
| |
11 12
\ /
13_a
|
13
/ \
Now the regions can be defined using edges:
Region A: (1_a,1) -> (8_a, 8) containing {1,2,3,4,5,6,7,8_a}
Region B: (8_a, 8) -> (13_a, 13) containing {8,9,10,11,12,13_a}
In general this approach saves a preliminary pass that has to insert new
bbs, to generate...