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; RUN: opt < %s -indvars -loop-deletion -simplifycfg -S | FileCheck %s

; Testcase distilled from 256.bzip2
; CHECK-LABEL: @test1
; CHECK-NOT: br
define i32 @test1() {
entry:
        br label %loopentry

loopentry:              ; preds = %loopentry, %entry
        %indvar1 = phi i32 [ 0, %entry ], [ %indvar.next2, %loopentry ]         ; <i32> [#uses=1]
        %h.0 = phi i32 [ %tmp.2, %loopentry ], [ 4, %entry ]            ; <i32> [#uses=1]
        %tmp.1 = mul i32 %h.0, 3                ; <i32> [#uses=1]
        %tmp.2 = add i32 %tmp.1, 1              ; <i32> [#uses=2]
        %indvar.next2 = add i32 %indvar1, 1             ; <i32> [#uses=2]
        %exitcond3 = icmp ne i32 %indvar.next2, 4               ; <i1> [#uses=1]
        br i1 %exitcond3, label %loopentry, label %loopexit

loopexit:               ; preds = %loopentry
        ret i32 %tmp.2
}


; PR12377
; CHECK-LABEL: @test2
; CHECK: [[VAR1:%.+]] = add i32 %arg, -11
; CHECK: [[VAR2:%.+]] = lshr i32 [[VAR1]], 1
; CHECK: [[VAR3:%.+]] = add i32 [[VAR2]], 1
; CHECK: [[VAR4:%.+]] = phi i32 [ 0, %bb ], [ [[VAR3]], %bb1.preheader ]
; CHECK: ret i32 [[VAR4]]
define i32 @test2(i32 %arg) {
bb:
  %tmp = icmp ugt i32 %arg, 10
  br i1 %tmp, label %bb1, label %bb7

bb1:                                              ; preds = %bb1, %bb
  %tmp2 = phi i32 [ %tmp5, %bb1 ], [ 0, %bb ]
  %tmp3 = phi i32 [ %tmp4, %bb1 ], [ %arg, %bb ]
  %tmp4 = add i32 %tmp3, -2
  %tmp5 = add i32 %tmp2, 1
  %tmp6 = icmp ugt i32 %tmp4, 10
  br i1 %tmp6, label %bb1, label %bb7

bb7:                                              ; preds = %bb1, %bb
  %tmp8 = phi i32 [ 0, %bb ], [ %tmp5, %bb1 ]
  ret i32 %tmp8
}