llvm/test/Transforms/SimplifyCFG/switch-simplify-crash2.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes="simplifycfg<forward-switch-cond;no-keep-loops>" < %s | FileCheck %s

define i8 @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[LOOP2:%.*]]
; CHECK:       loop2:
; CHECK-NEXT:    [[PHI2:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[SPEC_SELECT:%.*]], [[LOOP2]] ]
; CHECK-NEXT:    [[COND:%.*]] = icmp eq i8 [[PHI2]], 0
; CHECK-NEXT:    [[SPEC_SELECT]] = select i1 [[COND]], i8 0, i8 [[PHI2]]
; CHECK-NEXT:    br label [[LOOP2]]
;
entry:
  br label %loop

loop:
  %phi1 = phi i8 [ 0, %entry ], [ %phi2, %loop2 ]
  br label %loop2

loop2:
  %phi2 = phi i8 [ %phi1, %loop ], [ 0, %loop2 ]
  switch i8 %phi2, label %loop [
  i8 0, label %loop2
  i8 1, label %exit
  ]

exit:
  ret i8 0
}