llvm/llvm/test/Transforms/NewGVN/pr35074-phi-of-ops.ll

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

define void @crash1_pr35074(i32 %this, i1 %c) {
; CHECK-LABEL: @crash1_pr35074(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[FOR_COND:%.*]]
; CHECK:       for.cond:
; CHECK-NEXT:    [[PHIOFOPS:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[Y_0:%.*]], [[FOR_INC6:%.*]] ]
; CHECK-NEXT:    [[Y_0]] = phi i32 [ 1, [[ENTRY]] ], [ [[INC7:%.*]], [[FOR_INC6]] ]
; CHECK-NEXT:    br i1 [[C:%.*]], label [[FOR_INC6]], label [[FOR_BODY_LR_PH:%.*]]
; CHECK:       for.body.lr.ph:
; CHECK-NEXT:    br label [[FOR_BODY4:%.*]]
; CHECK:       for.body4:
; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i32 [[PHIOFOPS]], [[Y_0]]
; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_END:%.*]], label [[FOR_BODY4_1:%.*]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
; CHECK:       for.inc6:
; CHECK-NEXT:    [[INC7]] = add nuw nsw i32 [[Y_0]], 1
; CHECK-NEXT:    br label [[FOR_COND]]
; CHECK:       for.body4.1:
; CHECK-NEXT:    [[INC_1:%.*]] = add nuw nsw i32 [[Y_0]], 1
; CHECK-NEXT:    tail call void @_blah(i32 [[INC_1]])
; CHECK-NEXT:    br label [[FOR_END]]
;
entry:
  br label %for.cond

for.cond:                                         ; preds = %for.inc6, %entry
  %y.0 = phi i32 [ 1, %entry ], [ %inc7, %for.inc6 ]
  br i1 %c, label %for.inc6, label %for.body.lr.ph

for.body.lr.ph:                                   ; preds = %for.cond
  %sub = add nsw i32 %y.0, -1
  br label %for.body4

for.body4:                                        ; preds = %for.body.lr.ph
  %cmp = icmp ugt i32 %sub, %y.0
  br i1 %cmp, label %for.end, label %for.body4.1

for.end:                                          ; preds = %for.body4.1, %for.body4
  ret void

for.inc6:                                         ; preds = %for.cond
  %inc7 = add nuw nsw i32 %y.0, 1
  br label %for.cond

for.body4.1:                                      ; preds = %for.body4
  %inc.1 = add nuw nsw i32 %y.0, 1
  tail call void @_blah(i32 %inc.1)
  br label %for.end
}

declare void @_blah(i32)