test/CodeGen/X86/2008-08-19-SubAndFetch.ll

   1 ; RUN: llc < %s -march=x86-64 | FileCheck %s
   2
   3 @var = external global i64              ; <i64*> [#uses=1]
   4
   5 define i32 @main() nounwind {
   6 entry:
   7 ; CHECK: main:
   8 ; CHECK: lock
   9 ; CHECK: decq
  10         tail call i64 @llvm.atomic.load.sub.i64.p0i64( i64* @var, i64 1 )               ; <i64>:0 [#uses=0]
  11         unreachable
  12 }
  13
  14 declare i64 @llvm.atomic.load.sub.i64.p0i64(i64*, i64) nounwind