1 // 1) Compile shared code into different object files and into an executable.
2
3 // RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v1.o \
4 // RUN: -D_VERSION_1
5 // RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %s -c -o %t.v2.o \
6 // RUN: -D_VERSION_2
7 // RUN: %clangxx_profgen -std=c++14 -fcoverage-mapping %t.v1.o %t.v2.o \
8 // RUN: -o %t.exe
9
10 // 2) Collect profile data.
11
12 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t.exe
13 // RUN: llvm-profdata merge %t.profraw -o %t.profdata
14
15 // 3) Generate coverage reports from the different object files and the exe.
16
17 // RUN: llvm-cov show %t.v1.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V1-ONLY
18 // RUN: llvm-cov show %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V2,V2-ONLY
19 // RUN: llvm-cov show %t.v1.o -object %t.v2.o -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
20 // RUN: llvm-cov show %t.exe -instr-profile=%t.profdata | FileCheck %s -check-prefixes=V1,V2
21
22 // 4) Verify that coverage reporting on the aggregate coverage mapping shows
23 // hits for all code. (We used to arbitrarily pick a mapping from one binary
24 // and prefer it over others.) When only limited coverage information is
25 // available (just from one binary), don't try to guess any region counts.
26
27 struct A {
AA28 A() {} // V1: [[@LINE]]{{ *}}|{{ *}}1
29 // V1-ONLY: [[@LINE+1]]{{ *}}|{{ *}}|
AA30 A(int) {} // V2-ONLY: [[@LINE-2]]{{ *}}|{{ *}}|
31 // V2: [[@LINE-1]]{{ *}}|{{ *}}1
32 };
33
34 #ifdef _VERSION_1
35
36 void foo();
37
bar()38 void bar() {
39 A x; // V1: [[@LINE]]{{ *}}|{{ *}}1
40 }
41
main()42 int main() {
43 foo(); // V1: [[@LINE]]{{ *}}|{{ *}}1
44 bar();
45 return 0;
46 }
47
48 #endif // _VERSION_1
49
50 #ifdef _VERSION_2
51
foo()52 void foo() {
53 A x{0}; // V2: [[@LINE]]{{ *}}|{{ *}}1
54 }
55
56 #endif // _VERSION_2
57