1; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s 2; PR3168 3 4; CHECK-LABEL: append 5 6define i32* @append() gc "ocaml" { 7entry: 8 switch i32 0, label %L2 [i32 0, label %L1] 9L1: 10 %var8 = alloca i8* 11 call void @llvm.gcroot(i8** %var8,i8* null) 12 br label %L3 13L2: 14 call ccc void @oread_runtime_casenotcovered() 15 unreachable 16L3: 17 ret i32* null 18} 19 20declare ccc void @oread_runtime_casenotcovered() 21declare void @llvm.gcroot(i8**,i8*) 22