mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 16:33:37 +01:00
604a50cd71
The RegionInfo pass detects single entry single exit regions in a function, where a region is defined as any subgraph that is connected to the remaining graph at only two spots. Furthermore an hierarchical region tree is built. Use it by calling "opt -regions analyze" or "opt -view-regions". llvm-svn: 109089
21 lines
402 B
LLVM
21 lines
402 B
LLVM
; RUN: opt -regions -analyze < %s
|
|
; RUN: opt -regions -stats < %s |& FileCheck -check-prefix=STAT %s
|
|
|
|
define void @normal_condition() nounwind {
|
|
0:
|
|
br label %"1"
|
|
1:
|
|
br i1 1, label %"2", label %"3"
|
|
2:
|
|
br label %"2"
|
|
3:
|
|
br label %"4"
|
|
4:
|
|
ret void
|
|
}
|
|
; CHECK-NOT: =>
|
|
; CHECK: [0] 0 => <Function Return>
|
|
; CHECK: [1] 1 => 4
|
|
; STAT: 2 region - The # of regions
|
|
; STAT: 1 region - The # of simple regions
|