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llvm-project/llvm/test/Analysis/RegionInfo/infinite_loop.ll

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Add new RegionInfo pass. 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
2010-07-22 15:46:31 +08:00
; RUN: opt -regions -analyze < %s
Convert the uses of '|&' to use '2>&1 |' instead, which works on old versions of Bash. In addition, I can back out the change to the lit built-in shell test runner to support this. This should fix the majority of fallout on Darwin, but I suspect there will be a few straggling issues. llvm-svn: 159544
2012-07-03 02:37:59 +08:00
; RUN: opt -regions -stats < %s 2>&1 | FileCheck -check-prefix=STAT %s
Add new RegionInfo pass. 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
2010-07-22 15:46:31 +08:00
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