File: nontrivial-unswitch-invariant-select-bug.ll

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='simple-loop-unswitch<nontrivial>' -S < %s | FileCheck %s

; If we try to replace uses of `true` outside of `@foo`, we'll see it here.
define i1 @bar() {
; CHECK-LABEL: @bar(
; CHECK-NEXT:    ret i1 true
;
  ret i1 true
}

; We shouldn't unswitch this loop.
define void @foo() {
; CHECK-LABEL: @foo(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[HEADER:%.*]]
; CHECK:       header:
; CHECK-NEXT:    [[VAL:%.*]] = select i1 true, i1 true, i1 false
; CHECK-NEXT:    br i1 true, label [[EXIT:%.*]], label [[HEADER]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %header

header:
  %val = select i1 true, i1 true, i1 false
  br i1 %val, label %exit, label %header

exit:
  ret void
}