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      1 ; RUN: opt -S -lowerbitsets < %s | FileCheck %s
      2 
      3 ; Tests that we correctly handle external references, including the case where
      4 ; all functions in a bitset are external references.
      5 
      6 target triple = "x86_64-unknown-linux-gnu"
      7 
      8 declare void @foo()
      9 
     10 ; CHECK: @[[JT:.*]] = private constant [1 x <{ i8, i32, i8, i8, i8 }>] [<{ i8, i32, i8, i8, i8 }> <{ i8 -23, i32 trunc (i64 sub (i64 sub (i64 ptrtoint (void ()* @foo to i64), i64 ptrtoint ([1 x <{ i8, i32, i8, i8, i8 }>]* @[[JT]] to i64)), i64 5) to i32), i8 -52, i8 -52, i8 -52 }>], section ".text"
     11 
     12 define i1 @bar(i8* %ptr) {
     13   ; CHECK: icmp eq i64 {{.*}}, ptrtoint ([1 x <{ i8, i32, i8, i8, i8 }>]* @[[JT]] to i64)
     14   %p = call i1 @llvm.bitset.test(i8* %ptr, metadata !"void")
     15   ret i1 %p
     16 }
     17 
     18 declare i1 @llvm.bitset.test(i8* %ptr, metadata %bitset) nounwind readnone
     19 
     20 !0 = !{!"void", void ()* @foo, i64 0}
     21 
     22 !llvm.bitsets = !{!0}
     23