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      1 ; RUN: llc < %s -O0
      2 ; REQUIRES: default_triple
      3 
      4 define i32 @main() {
      5 entry:
      6   call void @f()
      7   ret i32 0
      8 }
      9 
     10 define void @f() gc "ocaml" {
     11 entry:
     12   %ptr.stackref = alloca i8*
     13   %gcroot = bitcast i8** %ptr.stackref to i8**
     14   call void @llvm.gcroot(i8** %gcroot, i8* null)
     15   ret void
     16 }
     17 
     18 declare void @llvm.gcroot(i8**, i8*) nounwind
     19