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      1 ; Test CFG simplify removal of branch instructions.
      2 ;
      3 ; RUN: opt < %s -simplifycfg -S | FileCheck %s
      4 
      5 define void @test1() {
      6         br label %1
      7         ret void
      8 ; CHECK: @test1
      9 ; CHECK-NEXT: ret void
     10 }
     11 
     12 define void @test2() {
     13         ret void
     14         ret void
     15 ; CHECK: @test2
     16 ; CHECK-NEXT: ret void
     17 ; CHECK-NEXT: }
     18 }
     19 
     20 define void @test3(i1 %T) {
     21         br i1 %T, label %1, label %1
     22         ret void
     23 ; CHECK: @test3
     24 ; CHECK-NEXT: ret void
     25 }
     26 
     27 
     28 ; PR5795
     29 define void @test5(i32 %A) {
     30   switch i32 %A, label %return [
     31     i32 2, label %1
     32     i32 10, label %2
     33   ]
     34 
     35   ret void
     36 
     37   ret void
     38 
     39 return:                                           ; preds = %entry
     40   ret void
     41 ; CHECK: @test5
     42 ; CHECK-NEXT: ret void
     43 }
     44