compiler-rt/test/profile/Linux/coverage-weak-lld.cpp

   1 // REQUIRES: lld-available
   2
   3 // FIXME: Investigate and fix.
   4 // XFAIL: powerpc64-target-arch
   5
   6 // RUN: %clang_profgen -fcoverage-mapping -c %s -o %t0.o
   7 // RUN: %clang_profgen -fcoverage-mapping -c %s -DOBJ_1 -o %t1.o
   8 // RUN: %clang_profgen -fcoverage-mapping -c %s -DOBJ_2 -o %t2.o
   9
  10 /// An external symbol can override a weak external symbol.
  11 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t1.o -o %t1
  12 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
  13 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_NOGC
  14 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t1.o -o %t1
  15 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
  16 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_NOGC
  17
  18 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t2.o -o %t2
  19 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
  20 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_NOGC
  21 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t2.o -o %t2
  22 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
  23 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_GC
  24
  25 /// Repeat the above tests with -ffunction-sections.
  26 // RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -o %t0.o
  27 // RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -DOBJ_1 -o %t1.o
  28 // RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -c %s -DOBJ_2 -o %t2.o
  29
  30 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t1.o -o %t1
  31 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
  32 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_NOGC
  33 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t1.o -o %t1
  34 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t1 | FileCheck %s --check-prefix=CHECK1
  35 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE1_GC
  36
  37 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld %t0.o %t2.o -o %t2
  38 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
  39 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_NOGC
  40 // RUN: %clang_profgen -fcoverage-mapping -fuse-ld=lld -Wl,--gc-sections %t0.o %t2.o -o %t2
  41 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t2 | FileCheck %s --check-prefix=CHECK2
  42 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s --check-prefix=PROFILE2_GC
  43
  44 // CHECK1: strong
  45 // CHECK1: strong
  46
  47 /// __profc__Z4weakv in %t1.o is local and has a zero value.
  48 /// Without GC it takes a duplicate entry.
  49 // PROFILE1_NOGC:      _Z4weakv:
  50 // PROFILE1_NOGC-NEXT:    Hash:
  51 // PROFILE1_NOGC-NEXT:    Counters: 1
  52 // PROFILE1_NOGC-NEXT:    Function count: 0
  53 // PROFILE1_NOGC:      _Z4weakv:
  54 // PROFILE1_NOGC-NEXT:    Hash:
  55 // PROFILE1_NOGC-NEXT:    Counters: 1
  56 // PROFILE1_NOGC-NEXT:    Function count: 2
  57
  58 // PROFILE1_GC:      _Z4weakv:
  59 // PROFILE1_GC-NEXT:    Hash:
  60 // PROFILE1_GC-NEXT:    Counters: 1
  61 // PROFILE1_GC-NEXT:    Function count: 2
  62 // PROFILE1_GC-NOT:  _Z4weakv:
  63
  64 // CHECK2: weak
  65 // CHECK2: weak
  66
  67 /// __profc__Z4weakv in %t2.o is weak and resolves to the value of %t0.o's copy.
  68 /// Without GC it takes a duplicate entry.
  69 // PROFILE2_NOGC:      _Z4weakv:
  70 // PROFILE2_NOGC-NEXT:    Hash:
  71 // PROFILE2_NOGC-NEXT:    Counters: 1
  72 // PROFILE2_NOGC-NEXT:    Function count: 2
  73 // PROFILE2_NOGC:      _Z4weakv:
  74 // PROFILE2_NOGC-NEXT:    Hash:
  75 // PROFILE2_NOGC-NEXT:    Counters: 1
  76 // PROFILE2_NOGC-NEXT:    Function count: 2
  77
  78 // PROFILE2_GC:      _Z4weakv:
  79 // PROFILE2_GC-NEXT:    Hash:
  80 // PROFILE2_GC-NEXT:    Counters: 1
  81 // PROFILE2_GC-NEXT:    Function count: 2
  82 // PROFILE2_GC-NOT:  _Z4weakv:
  83
  84 #ifdef OBJ_1
  85 #include <stdio.h>
  86
  87 void weak() { puts("strong"); }
  88 void foo() { weak(); }
  89
  90 #elif defined(OBJ_2)
  91 #include <stdio.h>
  92
  93 __attribute__((weak)) void weak() { puts("unreachable"); }
  94 void foo() { weak(); }
  95
  96 #else
  97 #include <stdio.h>
  98
  99 __attribute__((weak)) void weak() { puts("weak"); }
 100 void foo();
 101
 102 int main() {
 103   foo();
 104   weak();
 105 }
 106 #endif