1// RUN: %clang_profgen -fuse-ld=gold -O2 -fdata-sections -ffunction-sections -fcoverage-mapping -Wl,--gc-sections -o %t %s
2// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
3// RUN: llvm-profdata merge -o %t.profdata %t.profraw
4// RUN: llvm-cov show %t -instr-profile %t.profdata 2>&1 | FileCheck %s
5// BFD linker older than 2.26 has a bug that per-func profile data will be wrongly garbage collected when GC is turned on. We only do end-to-end test here without GC:
6// RUN: %clang_profgen -O2 -fcoverage-mapping -o %t.2 %s
7// RUN: env LLVM_PROFILE_FILE=%t.2.profraw %run %t.2
8// RUN: llvm-profdata merge -o %t.2.profdata %t.2.profraw
9// RUN: llvm-cov show %t.2 -instr-profile %t.2.profdata 2>&1 | FileCheck %s
10// Check covmap is not garbage collected when GC is turned on with BFD linker. Due to the bug mentioned above, we can only
11// do the check with objdump:
12// RUN: %clang_profgen -O2 -fcoverage-mapping -Wl,--gc-sections -o %t.3 %s
13// RUN: llvm-objdump -h %t.3 | FileCheck --check-prefix COVMAP %s
14// Check PIE option
15// RUN: %clang_profgen -fuse-ld=gold -O2 -fdata-sections -ffunction-sections -fPIE -pie -fcoverage-mapping -Wl,--gc-sections -o %t.pie %s
16// RUN: env LLVM_PROFILE_FILE=%t.pie.profraw %run %t.pie
17// RUN: llvm-profdata merge -o %t.pie.profdata %t.pie.profraw
18// RUN: llvm-cov show %t.pie -instr-profile %t.pie.profdata 2>&1 | FileCheck %s
19
20void foo(bool cond) { // CHECK: [[@LINE]]| 1|void foo(
21 if (cond) { // CHECK: [[@LINE]]| 1| if (cond) {
22 } // CHECK: [[@LINE]]| 0| }
23} // CHECK: [[@LINE]]| 1|}
24void bar() { // CHECK: [[@LINE]]| 1|void bar() {
25} // CHECK: [[@LINE]]| 1|}
26void func() { // CHECK: [[@LINE]]| 0|void func(
27} // CHECK: [[@LINE]]| 0|}
28int main() { // CHECK: [[@LINE]]| 1|int main(
29 foo(cond: false); // CHECK: [[@LINE]]| 1| foo(
30 bar(); // CHECK: [[@LINE]]| 1| bar(
31 return 0; // CHECK: [[@LINE]]| 1| return
32} // CHECK: [[@LINE]]| 1|}
33
34// COVMAP: __llvm_covmap {{.*}}
35
36

source code of compiler-rt/test/profile/Linux/coverage_test.cpp