compiler-rt/test/profile/instrprof-merging.cpp

   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
  28 struct 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
  37 void foo();
  38
  39 void bar() {
  40   A x;      // V1: [[@LINE]]{{ *}}|{{ *}}1
  41 }
  42
  43 int main() {
  44   foo();    // V1: [[@LINE]]{{ *}}|{{ *}}1
  45   bar();
  46   return 0;
  47 }
  48
  49 #endif // _VERSION_1
  50
  51 #ifdef _VERSION_2
  52
  53 void foo() {
  54   A x{0};   // V2: [[@LINE]]{{ *}}|{{ *}}1
  55 }
  56
  57 #endif // _VERSION_2