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