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|internal)}} 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 | |