clang/test/Profile/c-outdated-data.c

   1 // Test that outdated data is ignored.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   6 // RUN: llvm-profdata merge %S/Inputs/c-outdated-data.proftext -o %t.profdata
   7 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instrument-use-path=%t.profdata 2>&1 | FileCheck %s -check-prefix=NO_MISSING
   8 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -Wprofile-instr-missing -fprofile-instrument-use-path=%t.profdata 2>&1 | FileCheck %s -check-prefix=WITH_MISSING
   9
  10 // NO_MISSING: warning: profile data may be out of date: of 3 functions, 2 have mismatched data that will be ignored
  11 // NO_MISSING-NOT: 1 has no data
  12
  13 // WITH_MISSING: warning: profile data may be out of date: of 3 functions, 2 have mismatched data that will be ignored
  14 // WITH_MISSING: warning: profile data may be incomplete: of 3 functions, 1 has no data
  15
  16 void no_usable_data(void) {
  17   int i = 0;
  18
  19   if (i) {}
  20 }
  21
  22 void no_data(void) {
  23 }
  24
  25 int main(int argc, const char *argv[]) {
  26   no_usable_data();
  27   return 0;
  28 }