llvm/test/Transforms/StructurizeCFG/one-loop-multiple-backedges.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -structurizecfg %s -o - | FileCheck %s

; CHECK-NOT: br i1 true

define void @blam(ptr addrspace(1) nocapture %arg, float %arg1, float %arg2) {
; CHECK-LABEL: @blam(
; CHECK-NEXT:  bb:
; CHECK-NEXT:    br label [[BB3:%.*]]
; CHECK:       bb3:
; CHECK-NEXT:    [[TMP:%.*]] = phi i64 [ 0, [[BB:%.*]] ], [ [[TMP2:%.*]], [[FLOW1:%.*]] ]
; CHECK-NEXT:    [[TMP4:%.*]] = fcmp ult float [[ARG1:%.*]], 3.500000e+00
; CHECK-NEXT:    [[TMP4_INV:%.*]] = xor i1 [[TMP4]], true
; CHECK-NEXT:    br i1 [[TMP4_INV]], label [[BB5:%.*]], label [[FLOW:%.*]]
; CHECK:       bb5:
; CHECK-NEXT:    [[TMP6:%.*]] = fcmp uge float 0.000000e+00, [[ARG2:%.*]]
; CHECK-NEXT:    br label [[FLOW]]
; CHECK:       Flow:
; CHECK-NEXT:    [[TMP1:%.*]] = phi i1 [ [[TMP6]], [[BB5]] ], [ [[TMP4]], [[BB3]] ]
; CHECK-NEXT:    br i1 [[TMP1]], label [[BB7:%.*]], label [[FLOW1]]
; CHECK:       bb7:
; CHECK-NEXT:    [[TMP8:%.*]] = add nuw nsw i64 [[TMP]], 1
; CHECK-NEXT:    [[TMP9:%.*]] = icmp sge i64 [[TMP8]], 5
; CHECK-NEXT:    br label [[FLOW1]]
; CHECK:       Flow1:
; CHECK-NEXT:    [[TMP2]] = phi i64 [ [[TMP8]], [[BB7]] ], [ poison, [[FLOW]] ]
; CHECK-NEXT:    [[TMP3:%.*]] = phi i32 [ 255, [[BB7]] ], [ 15, [[FLOW]] ]
; CHECK-NEXT:    [[TMP5:%.*]] = phi i1 [ [[TMP9]], [[BB7]] ], [ true, [[FLOW]] ]
; CHECK-NEXT:    br i1 [[TMP5]], label [[BB10:%.*]], label [[BB3]]
; CHECK:       bb10:
; CHECK-NEXT:    store i32 [[TMP3]], ptr addrspace(1) [[ARG:%.*]], align 4
; CHECK-NEXT:    ret void
;
bb:
  br label %bb3

bb3:                                              ; preds = %bb7, %bb
  %tmp = phi i64 [ 0, %bb ], [ %tmp8, %bb7 ]
  %tmp4 = fcmp ult float %arg1, 3.500000e+00
  br i1 %tmp4, label %bb7, label %bb5

bb5:                                              ; preds = %bb3
  %tmp6 = fcmp olt float 0.000000e+00, %arg2
  br i1 %tmp6, label %bb10, label %bb7


bb7:                                              ; preds = %bb5, %bb3
  %tmp8 = add nuw nsw i64 %tmp, 1
  %tmp9 = icmp slt i64 %tmp8, 5
  br i1 %tmp9, label %bb3, label %bb10


bb10:                                             ; preds = %bb7, %bb5
  %tmp11 = phi i32 [ 15, %bb5 ], [ 255, %bb7 ]
  store i32 %tmp11, ptr addrspace(1) %arg, align 4
  ret void
}