| // Tests for instrumentation of C++11 range-for |
| |
| // 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 |
| // RUN: FileCheck --input-file=%tgen -check-prefix=CHECK -check-prefix=PGOGEN %s |
| |
| // RUN: llvm-profdata merge %S/Inputs/cxx-rangefor.proftext -o %t.profdata |
| // 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 |
| // RUN: FileCheck --input-file=%tuse -check-prefix=CHECK -check-prefix=PGOUSE %s |
| |
| // PGOGEN: @[[RFC:__profc__Z9range_forv]] = private global [5 x i64] zeroinitializer |
| |
| // CHECK-LABEL: define {{.*}}void @_Z9range_forv() |
| // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 0 |
| void range_for() { |
| int arr[] = {1, 2, 3, 4, 5}; |
| int sum = 0; |
| // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 1 |
| // PGOUSE: br {{.*}} !prof ![[RF1:[0-9]+]] |
| for (auto i : arr) { |
| // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 2 |
| // PGOUSE: br {{.*}} !prof ![[RF2:[0-9]+]] |
| if (i == 3) |
| continue; |
| sum += i; |
| // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 3 |
| // PGOUSE: br {{.*}} !prof ![[RF3:[0-9]+]] |
| if (sum >= 7) |
| break; |
| } |
| |
| // PGOGEN: store {{.*}} @[[RFC]], i64 0, i64 4 |
| // PGOUSE: br {{.*}} !prof ![[RF4:[0-9]+]] |
| if (sum) {} |
| } |
| |
| // PGOUSE-DAG: ![[RF1]] = !{!"branch_weights", i32 5, i32 1} |
| // PGOUSE-DAG: ![[RF2]] = !{!"branch_weights", i32 2, i32 4} |
| // PGOUSE-DAG: ![[RF3]] = !{!"branch_weights", i32 2, i32 3} |
| // PGOUSE-DAG: ![[RF4]] = !{!"branch_weights", i32 2, i32 1} |
| |
| int main(int argc, const char *argv[]) { |
| range_for(); |
| return 0; |
| } |