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      1 // Test that outdated data is ignored.
      2 
      3 // FIXME: It would be nice to use -verify here instead of FileCheck, but -verify
      4 // doesn't play well with warnings that have no line number.
      5 
      6 // RUN: llvm-profdata merge %S/Inputs/c-outdated-data.proftext -o %t.profdata
      7 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instr-use=%t.profdata -Wprofile-instr-dropped 2>&1 | FileCheck %s
      8 // CHECK: warning: profile data may be out of date: of 3 functions, 1 has no data and 1 has mismatched data that will be ignored
      9 
     10 void no_usable_data() {
     11   int i = 0;
     12 
     13   if (i) {}
     14 
     15 #ifdef GENERATE_OUTDATED_DATA
     16   if (i) {}
     17 #endif
     18 }
     19 
     20 #ifndef GENERATE_OUTDATED_DATA
     21 void no_data() {
     22 }
     23 #endif
     24 
     25 int main(int argc, const char *argv[]) {
     26   no_usable_data();
     27   return 0;
     28 }
     29