1 // Tests for instrumentation of C++11 range-for 2 3 // RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument=clang > %tgen 4 // RUN: FileCheck --input-file=%tgen -check-prefix=CHECK -check-prefix=PGOGEN %s 5 6 // RUN: llvm-profdata merge %S/Inputs/cxx-rangefor.proftext -o %t.profdata 7 // RUN: %clang_cc1 -x c++ %s -triple %itanium_abi_triple -main-file-name cxx-rangefor.cpp -std=c++11 -o - -emit-llvm -fprofile-instrument-use-path=%t.profdata > %tuse 8 // RUN: FileCheck --input-file=%tuse -check-prefix=CHECK -check-prefix=PGOUSE %s 9 10 // PGOGEN: @[[RFC:__profc__Z9range_forv]] = private global [5 x i64] zeroinitializer 11 12 // CHECK-LABEL: define {{.*}}void @_Z9range_forv() 13 // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 0 14 void range_for() { 15 int arr[] = {1, 2, 3, 4, 5}; 16 int sum = 0; 17 // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 1 18 // PGOUSE: br {{.*}} !prof ![[RF1:[0-9]+]] 19 for (auto i : arr) { 20 // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 2 21 // PGOUSE: br {{.*}} !prof ![[RF2:[0-9]+]] 22 if (i == 3) 23 continue; 24 sum += i; 25 // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 3 26 // PGOUSE: br {{.*}} !prof ![[RF3:[0-9]+]] 27 if (sum >= 7) 28 break; 29 } 30 31 // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 4 32 // PGOUSE: br {{.*}} !prof ![[RF4:[0-9]+]] 33 if (sum) {} 34 } 35 36 // PGOUSE-DAG: ![[RF1]] = !{!"branch_weights", i32 5, i32 1} 37 // PGOUSE-DAG: ![[RF2]] = !{!"branch_weights", i32 2, i32 4} 38 // PGOUSE-DAG: ![[RF3]] = !{!"branch_weights", i32 2, i32 3} 39 // PGOUSE-DAG: ![[RF4]] = !{!"branch_weights", i32 2, i32 1} 40 41 int main(int argc, const char *argv[]) { 42 range_for(); 43 return 0; 44 } 45
