test/Transforms/IndVarSimplify/iv-poison.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=indvars -S < %s | FileCheck %s

; PR59777
define i2 @iv_hoist_nsw_poison(i2 %arg) {
; CHECK-LABEL: @iv_hoist_nsw_poison(
; CHECK-NEXT:  bb:
; CHECK-NEXT:    br label [[BB1:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    [[DOT07:%.*]] = phi i2 [ 1, [[BB:%.*]] ], [ [[I:%.*]], [[BB1]] ]
; CHECK-NEXT:    [[I]] = add nuw i2 [[DOT07]], 1
; CHECK-NEXT:    [[DOTNOT_NOT:%.*]] = icmp ult i2 1, [[ARG:%.*]]
; CHECK-NEXT:    br i1 [[DOTNOT_NOT]], label [[COMMON_RET:%.*]], label [[BB1]]
; CHECK:       common.ret:
; CHECK-NEXT:    [[I2_LCSSA:%.*]] = phi i2 [ [[I]], [[BB1]] ]
; CHECK-NEXT:    ret i2 [[I2_LCSSA]]
;
bb:
  br label %bb1

bb1:                                              ; preds = %bb1, %bb
  %.07 = phi i2 [ 1, %bb ], [ %i, %bb1 ]
  %.0 = phi i2 [ 1, %bb ], [ %i2, %bb1 ]
  %i = add nsw i2 %.07, 1
  %i2 = add i2 %.0, 1
  %.not.not = icmp ult i2 %.07, %arg
  br i1 %.not.not, label %common.ret, label %bb1

common.ret:                                       ; preds = %bb1
  ret i2 %i2
}