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      1 ; REQUIRES: asserts
      2 ; RUN: opt -regions -analyze < %s | FileCheck %s
      3 ; RUN: opt -regions -stats < %s 2>&1 | FileCheck -check-prefix=STAT %s
      4 ; RUN: opt -regions -print-region-style=bb  -analyze < %s 2>&1 | FileCheck -check-prefix=BBIT %s
      5 ; RUN: opt -regions -print-region-style=rn  -analyze < %s 2>&1 | FileCheck -check-prefix=RNIT %s
      6 
      7 define internal fastcc zeroext i8 @handle_compress() nounwind {
      8 end165:
      9   br i1 1, label %false239, label %true181
     10 
     11 true181:
     12   br i1 1, label %then187, label %else232
     13 
     14 then187:
     15   br label %end265
     16 
     17 else232:
     18   br i1 1, label %false239, label %then245
     19 
     20 false239:
     21   br i1 1, label %then245, label %else259
     22 
     23 then245:
     24   br i1 1, label %then251, label %end253
     25 
     26 then251:
     27   br label %end253
     28 
     29 end253:
     30   br label %end265
     31 
     32 else259:
     33   br label %end265
     34 
     35 end265:
     36   br i1 1, label %then291, label %end298
     37 
     38 then291:
     39   br label %end298
     40 
     41 end298:
     42   ret i8 1
     43 }
     44 
     45 ; CHECK-NOT: =>
     46 ; CHECK: [0] end165 => <Function Return>
     47 ; CHECK-NEXT: [1] end165 => end265
     48 ; CHECK-NEXT: [2] then245 => end253
     49 ; CHECK-NEXT: [1] end265 => end298
     50 
     51 ; STAT: 4 region - The # of regions
     52 
     53 ; BBIT: end165, false239, then245, then251, end253, end265, then291, end298, else259, true181, then187, else232,
     54 ; BBIT: end165, false239, then245, then251, end253, else259, true181, then187, else232,
     55 ; BBIT: then245, then251,
     56 ; BBIT: end265, then291,
     57 
     58 ; RNIT: end165 => end265, end265 => end298, end298,
     59 ; RNIT: end165, false239, then245 => end253, end253, else259, true181, then187, else232,
     60 ; RNIT: then245, then251,
     61 ; RNIT: end265, then291,
     62