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      1 // RUN: %clang_cc1 %s -emit-llvm -o - -O0 | FileCheck %s
      2 
      3 void foo(event_t evt);
      4 
      5 void kernel ker() {
      6   event_t e;
      7 // CHECK: alloca %opencl.event_t*,
      8   foo(e);
      9 // CHECK: call void @foo(%opencl.event_t* %
     10   foo(0);
     11 // CHECK: call void @foo(%opencl.event_t* null)
     12 }
     13