1// UNSUPPORTED: target={{.*windows.*}}
2// XFAIL: target={{.*}}-aix{{.*}}
3// 1) Compile shared code into different object files and into an executable.
4
5// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v1.o \
6// RUN: -D_VERSION_1
7// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v2.o \
8// RUN: -D_VERSION_2
9// RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %t.v1.o %t.v2.o \
10// RUN: -o %t.exe
11
12// 2) Collect profile data.
13
14// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t.exe
15// RUN: llvm-profdata merge %t.profraw -o %t.profdata
16
17// 3) Generate coverage reports from the different object files and the exe.
18
19// RUN: llvm-cov show %t.v1.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V1-ONLY
20// RUN: llvm-cov show %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V2,V2-ONLY
21// RUN: llvm-cov show %t.v1.o -object %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
22// RUN: llvm-cov show %t.exe -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
23
24// 4) Verify that coverage reporting on the aggregate coverage mapping shows
25// hits for all code. (We used to arbitrarily pick a mapping from one binary
26// and prefer it over others.) When only limited coverage information is
27// available (just from one binary), don't try to guess any region counts.
28
29struct A {
30 A() {} // V1: [[@LINE]]{{ *}}|{{ *}}1
31 // V1-ONLY: [[@LINE+1]]{{ *}}|{{ *}}|
32 A(int) {} // V2-ONLY: [[@LINE-2]]{{ *}}|{{ *}}|
33 // V2: [[@LINE-1]]{{ *}}|{{ *}}1
34};
35
36#ifdef _VERSION_1
37
38void foo();
39
40void bar() {
41 A x; // V1: [[@LINE]]{{ *}}|{{ *}}1
42}
43
44int main() {
45 foo(); // V1: [[@LINE]]{{ *}}|{{ *}}1
46 bar();
47 return 0;
48}
49
50#endif // _VERSION_1
51
52#ifdef _VERSION_2
53
54void foo() {
55 A x{0}; // V2: [[@LINE]]{{ *}}|{{ *}}1
56}
57
58#endif // _VERSION_2
59

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