compiler-rt/test/profile/instrprof-darwin-dead-strip.c

   1 // REQUIRES: osx-ld64-live_support
   2 // REQUIRES: lto
   3
   4 // RUN: %clang_profgen=%t.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -DCODE=1 -Wl,-dead_strip -o %t %s
   5 // RUN: %run %t
   6 // RUN: llvm-profdata merge -o %t.profdata %t.profraw
   7 // RUN: llvm-profdata show --all-functions %t.profdata | FileCheck %s -check-prefix=PROF
   8 // RUN: llvm-cov show %t -instr-profile %t.profdata | FileCheck %s -check-prefix=COV
   9 // RUN: nm %t | FileCheck %s -check-prefix=NM
  10 // RUN: otool -V -s __DATA __llvm_prf_names %t | FileCheck %s -check-prefix=PRF_NAMES
  11 // RUN: otool -V -s __DATA __llvm_prf_cnts %t | FileCheck %s -check-prefix=PRF_CNTS
  12
  13 // RUN: %clang_lto_profgen=%t.lto.profraw -fcoverage-mapping -mllvm -enable-name-compression=false -DCODE=1 -Wl,-dead_strip -flto -o %t.lto %s
  14 // RUN: %run %t.lto
  15 // RUN: llvm-profdata merge -o %t.lto.profdata %t.lto.profraw
  16 // RUN: llvm-profdata show --all-functions %t.lto.profdata | FileCheck %s -check-prefix=PROF
  17 // RUN: llvm-cov show %t.lto -instr-profile %t.lto.profdata | FileCheck %s -check-prefix=COV
  18 // RUN: nm %t.lto | FileCheck %s -check-prefix=NM
  19 // RUN: otool -V -s __DATA __llvm_prf_names %t.lto | FileCheck %s -check-prefix=PRF_NAMES
  20 // RUN: otool -V -s __DATA __llvm_prf_cnts %t.lto | FileCheck %s -check-prefix=PRF_CNTS
  21
  22 // Note: We expect foo() and some of the profiling data associated with it to
  23 // be dead-stripped.
  24
  25 // Note: When there is no code in a program, we expect to see the exact same
  26 // set of external functions provided by the profile runtime.
  27
  28 // RUN: %clang_profgen -fcoverage-mapping -Wl,-dead_strip -dynamiclib -o %t.nocode.dylib %s
  29 // RUN: nm -jgU %t.nocode.dylib > %t.nocode.syms
  30 // RUN: nm -jgU %t | sed -e '/_\{1,\}main/d' -e '/_\{1,\}mh_execute_header/d' > %t.code.syms
  31 // RUN: diff %t.nocode.syms %t.code.syms
  32
  33 #ifdef CODE
  34
  35 // COV: [[@LINE+1]]{{ *}}|{{ *}}0|void foo()
  36 void foo() {}
  37
  38 // COV: [[@LINE+1]]{{ *}}|{{ *}}1|int main
  39 int main() { return 0; }
  40
  41 #endif // CODE
  42
  43 // NM-NOT: foo
  44
  45 // PROF: Counters:
  46 // PROF-NEXT:   main:
  47 // PROF-NEXT:     Hash:
  48 // PROF-NEXT:     Counters: 1
  49 // PROF-NEXT:     Function count: 1
  50 // PROF-NEXT: Instrumentation level: Front-end
  51 // PROF-NEXT: Functions shown: 1
  52 // PROF-NEXT: Total functions: 1
  53 // PROF-NEXT: Maximum function count: 1
  54 // PROF-NEXT: Maximum internal block count: 0
  55
  56 // Note: We don't expect the names of dead-stripped functions to disappear from
  57 // __llvm_prf_names, because collectPGOFuncNameStrings() glues the names
  58 // together.
  59
  60 // PRF_NAMES: Contents of (__DATA,__llvm_prf_names) section
  61 // PRF_NAMES-NEXT: {{.*}} 08 00 66 6f 6f 01 6d 61 69 6e
  62 //                        |  |  f  o  o  #  m  a  i  n
  63 //                        |  |___________|
  64 //                        |              |
  65 //               UncompressedLen = 8     |
  66 //                                       |
  67 //                                CompressedLen = 0
  68
  69 // Note: We expect the profile counters for dead-stripped functions to also be
  70 // dead-stripped.
  71
  72 // PRF_CNTS: Contents of (__DATA,__llvm_prf_cnts) section
  73 // PRF_CNTS-NEXT: {{.*}} 00 00 00 00 00 00 00 00