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

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