1// UNSUPPORTED: target={{.*windows.*}}
2// 1) Compile shared code into different object files and into an executable.
3
4// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v1.o \
5// RUN: -D_VERSION_1
6// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v2.o \
7// RUN: -D_VERSION_2
8// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %t.v1.o %t.v2.o \
9// RUN: -o %t.exe
10
11// 2) Collect profile data.
12
13// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t.exe
14// RUN: llvm-profdata merge %t.profraw -o %t.profdata
15
16// 3) Generate coverage reports from the different object files and the exe.
17
18// RUN: llvm-cov show %t.v1.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V1-ONLY
19// RUN: llvm-cov show %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V2,V2-ONLY
20// RUN: llvm-cov show %t.v1.o -object %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
21// RUN: llvm-cov show %t.exe -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
22
23// 4) Verify that coverage reporting on the aggregate coverage mapping shows
24// hits for all code. (We used to arbitrarily pick a mapping from one binary
25// and prefer it over others.) When only limited coverage information is
26// available (just from one binary), don't try to guess any region counts.
27
28struct A {
29 A() {} // V1: [[@LINE]]{{ *}}|{{ *}}1
30 // V1-ONLY: [[@LINE+1]]{{ *}}|{{ *}}|
31 A(int) {} // V2-ONLY: [[@LINE-2]]{{ *}}|{{ *}}|
32 // V2: [[@LINE-1]]{{ *}}|{{ *}}1
33};
34
35#ifdef _VERSION_1
36
37void foo();
38
39void bar() {
40 A x; // V1: [[@LINE]]{{ *}}|{{ *}}1
41}
42
43int main() {
44 foo(); // V1: [[@LINE]]{{ *}}|{{ *}}1
45 bar();
46 return 0;
47}
48
49#endif // _VERSION_1
50
51#ifdef _VERSION_2
52
53void foo() {
54 A x{0}; // V2: [[@LINE]]{{ *}}|{{ *}}1
55}
56
57#endif // _VERSION_2
58

source code of compiler-rt/test/profile/instrprof-merging.cpp