clang/test/Profile/cxx-templates.cpp

   1 // Tests for instrumentation of templated code. Each instantiation of a template
   2 // should be instrumented separately.
   3
   4 // RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-templates.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument=clang > %tgen
   5 // RUN: FileCheck --input-file=%tgen -check-prefix=T0GEN -check-prefix=ALL %s
   6 // RUN: FileCheck --input-file=%tgen -check-prefix=T100GEN -check-prefix=ALL %s
   7
   8 // RUN: llvm-profdata merge %S/Inputs/cxx-templates.proftext -o %t.profdata
   9 // RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-templates.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument-use-path=%t.profdata > %tuse
  10 // RUN: FileCheck --input-file=%tuse -check-prefix=T0USE -check-prefix=ALL %s
  11 // RUN: FileCheck --input-file=%tuse -check-prefix=T100USE -check-prefix=ALL %s
  12
  13 // The linkage can be target dependent, so accept all linkage here,
  14 // the linkage tests for different target are in llvm/test/Instrumentation/InstrProfiling/profiling.ll
  15 // T0GEN: @[[T0C:__profc__Z4loopILj0EEvv]] = {{.*}} global [2 x i64] zeroinitializer
  16 // T100GEN: @[[T100C:__profc__Z4loopILj100EEvv]] = {{.*}} global [2 x i64] zeroinitializer
  17
  18 // T0GEN-LABEL: define linkonce_odr {{.*}}void @_Z4loopILj0EEvv()
  19 // T0USE-LABEL: define linkonce_odr {{.*}}void @_Z4loopILj0EEvv()
  20 // T100GEN-LABEL: define linkonce_odr {{.*}}void @_Z4loopILj100EEvv()
  21 // T100USE-LABEL: define linkonce_odr {{.*}}void @_Z4loopILj100EEvv()
  22 template <unsigned N> void loop() {
  23   // ALL-NOT: ret
  24   // T0GEN: store {{.*}} @[[T0C]]
  25   // T100GEN: store {{.*}} @[[T100C]]
  26
  27   // ALL-NOT: ret
  28   // T0GEN: store {{.*}} @[[T0C]], i32 0, i32 1
  29   // T0USE: br {{.*}} !prof ![[T01:[0-9]+]]
  30   // T100GEN: store {{.*}} @[[T100C]], i32 0, i32 1
  31   // T100USE: br {{.*}} !prof ![[T1001:[0-9]+]]
  32   for (unsigned I = 0; I < N; ++I) {}
  33
  34   // ALL: ret
  35 }
  36
  37 // T0USE-DAG: ![[T01]] = !{!"branch_weights", i32 1, i32 2}
  38 // T100USE-DAG: ![[T1001]] = !{!"branch_weights", i32 101, i32 2}
  39
  40 int main(int argc, const char *argv[]) {
  41   loop<0>();
  42   loop<100>();
  43   return 0;
  44 }