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llvm-project/clang/test/Profile/cxx-rangefor.cpp

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InstrProf: Fix handling of profile counters in the body of range based for We were assigning the counter for the body of the loop to the loop variable initialization for some reason here, but our tests completely lacked coverage for range-for loops. This fixes that and makes the logic generally more similar to the logic for a regular for. llvm-svn: 236277
2015-05-01 06:58:28 +08:00
// 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-instr-generate > %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-instr-use=%t.profdata > %tuse
// RUN: FileCheck --input-file=%tuse -check-prefix=CHECK -check-prefix=PGOUSE %s
// PGOGEN: @[[RFC:__llvm_profile_counters__Z9range_forv]] = private global [5 x i64] zeroinitializer
Account for calling convention specifiers in function definitions in IR test cases Several tests wouldn't pass when executed on an armv7a_pc_linux triple due to the non-default arm_aapcs calling convention produced on the function definitions in the IR output. Account for this with the application of a little regex. Patch by Ying Yi. llvm-svn: 240971
2015-06-30 01:29:50 +08:00
// CHECK-LABEL: define {{.*}}void @_Z9range_forv()
InstrProf: Fix handling of profile counters in the body of range based for We were assigning the counter for the body of the loop to the loop variable initialization for some reason here, but our tests completely lacked coverage for range-for loops. This fixes that and makes the logic generally more similar to the logic for a regular for. llvm-svn: 236277
2015-05-01 06:58:28 +08:00
// 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;
}