1 // Check that llvm-cov loads real coverage mapping data for a function
2 // even though dummy coverage data for that function comes first.
3 // Dummy coverage data is exported if the definition of an inline function
4 // is seen but the function is not used in the translation unit.
5
6 // If you need to rebuild the 'covmapping' file for this test, please use
7 // the following commands:
8 // clang++ -fprofile-instr-generate -fcoverage-mapping -o tmp -x c++ prefer_used_to_unused.h prefer_used_to_unused.cpp
9 // llvm-cov convert-for-testing -o prefer_used_to_unused.covmapping tmp
10
11 // RUN: llvm-profdata merge %S/Inputs/prefer_used_to_unused.proftext -o %t.profdata
12 // RUN: llvm-cov show %S/Inputs/prefer_used_to_unused.covmapping -instr-profile %t.profdata -filename-equivalence %s | FileCheck %s
13
14 // Coverage data for this function has a non-zero hash value if it is used in the translation unit.
sampleFunc(int A)15 inline int sampleFunc(int A) { // CHECK: 1| [[@LINE]]|inline int sampleFunc(int A) {
16 if (A > 0) // CHECK-NEXT: 1| [[@LINE]]| if (A > 0)
17 return A; // CHECK-NEXT: 1| [[@LINE]]| return A;
18 return 0; // CHECK-NEXT: 0| [[@LINE]]| return 0;
19 } // CHECK-NEXT: 1| [[@LINE]]|}
20
21 // The hash for this function is zero in both cases, either it is used in the translation unit or not.
simpleFunc(int A)22 inline int simpleFunc(int A) { // CHECK: 1| [[@LINE]]|inline int simpleFunc(int A) {
23 return A; // CHECK-NEXT: 1| [[@LINE]]| return A;
24 } // CHECK-NEXT: 1| [[@LINE]]|}
25