test/Transforms/CorrelatedValuePropagation/pointer.ll

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

; Testcase that checks that we don't end in a neverending recursion resulting in
; a segmentation fault. The checks below verify that nothing is changed.

declare dso_local i16* @f2(i16* readnone returned) local_unnamed_addr

define dso_local void @f3() local_unnamed_addr {
; CHECK-LABEL: @f3(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[FOR_COND:%.*]]
; CHECK:       for.end:
; CHECK-NEXT:    [[CALL6:%.*]] = call i16* @f2(i16* [[CALL6]])
; CHECK-NEXT:    br i1 false, label [[FOR_COND]], label [[FOR_COND3:%.*]]
; CHECK:       for.cond:
; CHECK-NEXT:    [[C_0:%.*]] = phi i16* [ undef, [[ENTRY:%.*]] ], [ [[CALL6]], [[FOR_END:%.*]] ]
; CHECK-NEXT:    br label [[FOR_COND3]]
; CHECK:       for.cond3:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.cond

for.end:
  %call6 = call i16* @f2(i16* %call6)
  br i1 false, label %for.cond, label %for.cond3

for.cond:
  %c.0 = phi i16* [ undef, %entry ], [ %call6, %for.end ]
  br label %for.cond3

for.cond3:
  ret void
}