[compiler-rt] r336365 - Make __gcov_flush flush counters for all shared libraries

Mikhail Zolotukhin via llvm-commits llvm-commits at lists.llvm.org
Thu Jul 5 18:42:37 PDT 2018


It also broke green dragon <http://green.lab.llvm.org/green/job/clang-stage1-configure-RA/46970/consoleFull#-68865869049ba4694-19c4-4d7e-bec5-911270d8a58c> (it’s macos). Could you please fix/revert it to unbreak the bots?

Thanks,
Michael

> On Jul 5, 2018, at 3:59 PM, Marco Castelluccio via llvm-commits <llvm-commits at lists.llvm.org> wrote:
> 
> Hello Sean,
> yes, I've added some tests that are not passing on that platform. Could we disable them there?
> 
> Thanks!
> - Marco.
> 
> Il 05/07/2018 21:21, Sean Fertile ha scritto:
>> Hi Marco, 
>>  
>> I believe this commit broke http://lab.llvm.org:8011/builders/clang-ppc64be-linux <http://lab.llvm.org:8011/builders/clang-ppc64be-linux>
>>  
>> Thanks
>> Sean
>>  
>> ----- Original message -----
>> From: Marco Castelluccio via llvm-commits <llvm-commits at lists.llvm.org> <mailto:llvm-commits at lists.llvm.org>
>> Sent by: "llvm-commits" <llvm-commits-bounces at lists.llvm.org> <mailto:llvm-commits-bounces at lists.llvm.org>
>> To: llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>
>> Cc:
>> Subject: [compiler-rt] r336365 - Make __gcov_flush flush counters for all shared libraries
>> Date: Thu, Jul 5, 2018 11:57 AM
>>  
>> Author: marco
>> Date: Thu Jul  5 08:52:59 2018
>> New Revision: 336365
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=336365&view=rev <http://llvm.org/viewvc/llvm-project?rev=336365&view=rev>
>> Log:
>> Make __gcov_flush flush counters for all shared libraries
>> 
>> Summary:
>> This will make the behavior of __gcov_flush match the GCC behavior.
>> 
>> I would like to rename __gcov_flush to __llvm_gcov_flush (in case of programs linking to libraries built with different compilers), but I guess we can't for compatibility reasons.
>> 
>> Reviewers: davidxl
>> 
>> Reviewed By: davidxl
>> 
>> Subscribers: samsonov, vitalybuka, pcc, kcc, junbuml, glider, fhahn, eugenis, dvyukov, davidxl, srhines, chh, llvm-commits, #sanitizers
>> 
>> Differential Revision: https://reviews.llvm.org/D48538 <https://reviews.llvm.org/D48538>
>> 
>> Added:
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov
>>     compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test
>>     compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test
>> Modified:
>>     compiler-rt/trunk/lib/profile/GCDAProfiling.c
>>     compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c
>>     compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test
>> 
>> Modified: compiler-rt/trunk/lib/profile/GCDAProfiling.c
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/profile/GCDAProfiling.c?rev=336365&r1=336364&r2=336365&view=diff <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/profile/GCDAProfiling.c?rev=336365&r1=336364&r2=336365&view=diff>
>> ==============================================================================
>> --- compiler-rt/trunk/lib/profile/GCDAProfiling.c (original)
>> +++ compiler-rt/trunk/lib/profile/GCDAProfiling.c Thu Jul  5 08:52:59 2018
>> @@ -86,31 +86,76 @@ static uint64_t file_size = 0;
>>  static int new_file = 0;
>>  static int fd = -1;
>>  
>> -/*
>> - * A list of functions to write out the data.
>> - */
>> -typedef void (*writeout_fn)();
>> +typedef void (*fn_ptr)();
>>  
>> -struct writeout_fn_node {
>> -  writeout_fn fn;
>> -  struct writeout_fn_node *next;
>> +typedef void* dynamic_object_id;
>> +// The address of this variable identifies a given dynamic object.
>> +static dynamic_object_id current_id;
>> +#define CURRENT_ID (&current_id)
>> +
>> +struct fn_node {
>> +  dynamic_object_id id;
>> +  fn_ptr fn;
>> +  struct fn_node* next;
>>  };
>>  
>> -static struct writeout_fn_node *writeout_fn_head = NULL;
>> -static struct writeout_fn_node *writeout_fn_tail = NULL;
>> +struct fn_list {
>> +  struct fn_node *head, *tail;
>> +};
>>  
>>  /*
>> - *  A list of flush functions that our __gcov_flush() function should call.
>> + * A list of functions to write out the data, shared between all dynamic objects.
>>   */
>> -typedef void (*flush_fn)();
>> +struct fn_list writeout_fn_list;
>>  
>> -struct flush_fn_node {
>> -  flush_fn fn;
>> -  struct flush_fn_node *next;
>> -};
>> +/*
>> + *  A list of flush functions that our __gcov_flush() function should call, shared between all dynamic objects.
>> + */
>> +struct fn_list flush_fn_list;
>> +
>> +static void fn_list_insert(struct fn_list* list, fn_ptr fn) {
>> +  struct fn_node* new_node = malloc(sizeof(struct fn_node));
>> +  new_node->fn = fn;
>> +  new_node->next = NULL;
>> +  new_node->id = CURRENT_ID;
>> +
>> +  if (!list->head) {
>> +    list->head = list->tail = new_node;
>> +  } else {
>> +    list->tail->next = new_node;
>> +    list->tail = new_node;
>> +  }
>> +}
>> +
>> +static void fn_list_remove(struct fn_list* list) {
>> +  struct fn_node* curr = list->head;
>> +  struct fn_node* prev = NULL;
>> +  struct fn_node* next = NULL;
>> +
>> +  while (curr) {
>> +    next = curr->next;
>> +
>> +    if (curr->id == CURRENT_ID) {
>> +      if (curr == list->head) {
>> +        list->head = next;
>> +      }
>> +
>> +      if (curr == list->tail) {
>> +        list->tail = prev;
>> +      }
>> +
>> +      if (prev) {
>> +        prev->next = next;
>> +      }
>> +
>> +      free(curr);
>> +    } else {
>> +      prev = curr;
>> +    }
>>  
>> -static struct flush_fn_node *flush_fn_head = NULL;
>> -static struct flush_fn_node *flush_fn_tail = NULL;
>> +    curr = next;
>> +  }
>> +}
>>  
>>  static void resize_write_buffer(uint64_t size) {
>>    if (!new_file) return;
>> @@ -403,6 +448,7 @@ void llvm_gcda_summary_info() {
>>    const uint32_t obj_summary_len = 9; /* Length for gcov compatibility. */
>>    uint32_t i;
>>    uint32_t runs = 1;
>> +  static uint32_t run_counted = 0; // We only want to increase the run count once.
>>    uint32_t val = 0;
>>    uint64_t save_cur_pos = cur_pos;
>>  
>> @@ -429,7 +475,9 @@ void llvm_gcda_summary_info() {
>>  
>>      read_32bit_value(); /* checksum, unused */
>>      read_32bit_value(); /* num, unused */
>> -    runs += read_32bit_value(); /* Add previous run count to new counter. */
>> +    uint32_t prev_runs = read_32bit_value();
>> +    /* Add previous run count to new counter, if not already counted before. */
>> +    runs = run_counted ? prev_runs : prev_runs + 1;
>>    }
>>  
>>    cur_pos = save_cur_pos;
>> @@ -447,6 +495,8 @@ void llvm_gcda_summary_info() {
>>    write_bytes("\0\0\0\xa3", 4); /* tag indicates 1 program */
>>    write_32bit_value(0); /* 0 length */
>>  
>> +  run_counted = 1;
>> +
>>  #ifdef DEBUG_GCDAPROFILING
>>    fprintf(stderr, "llvmgcda:   %u runs\n", runs);
>>  #endif
>> @@ -479,61 +529,34 @@ void llvm_gcda_end_file() {
>>  }
>>  
>>  COMPILER_RT_VISIBILITY
>> -void llvm_register_writeout_function(writeout_fn fn) {
>> -  struct writeout_fn_node *new_node = malloc(sizeof(struct writeout_fn_node));
>> -  new_node->fn = fn;
>> -  new_node->next = NULL;
>> -
>> -  if (!writeout_fn_head) {
>> -    writeout_fn_head = writeout_fn_tail = new_node;
>> -  } else {
>> -    writeout_fn_tail->next = new_node;
>> -    writeout_fn_tail = new_node;
>> -  }
>> +void llvm_register_writeout_function(fn_ptr fn) {
>> +  fn_list_insert(&writeout_fn_list, fn);
>>  }
>>  
>>  COMPILER_RT_VISIBILITY
>>  void llvm_writeout_files(void) {
>> -  struct writeout_fn_node *curr = writeout_fn_head;
>> +  struct fn_node *curr = writeout_fn_list.head;
>>  
>>    while (curr) {
>> -    curr->fn();
>> +    if (curr->id == CURRENT_ID) {
>> +      curr->fn();
>> +    }
>>      curr = curr->next;
>>    }
>>  }
>>  
>>  COMPILER_RT_VISIBILITY
>>  void llvm_delete_writeout_function_list(void) {
>> -  while (writeout_fn_head) {
>> -    struct writeout_fn_node *node = writeout_fn_head;
>> -    writeout_fn_head = writeout_fn_head->next;
>> -    free(node);
>> -  }
>> -  
>> -  writeout_fn_head = writeout_fn_tail = NULL;
>> +  fn_list_remove(&writeout_fn_list);
>>  }
>>  
>>  COMPILER_RT_VISIBILITY
>> -void llvm_register_flush_function(flush_fn fn) {
>> -  struct flush_fn_node *new_node = malloc(sizeof(struct flush_fn_node));
>> -  new_node->fn = fn;
>> -  new_node->next = NULL;
>> -
>> -  if (!flush_fn_head) {
>> -    flush_fn_head = flush_fn_tail = new_node;
>> -  } else {
>> -    flush_fn_tail->next = new_node;
>> -    flush_fn_tail = new_node;
>> -  }
>> +void llvm_register_flush_function(fn_ptr fn) {
>> +  fn_list_insert(&flush_fn_list, fn);
>>  }
>>  
>> -// __gcov_flush is hidden. When called in a .so file,
>> -// it dumps profile data of the calling .so file.
>> -// If a main program needs to dump profile data of each linked
>> -// .so files, it should use dlsym to find and call llvm_gcov_flush.
>> -COMPILER_RT_VISIBILITY
>>  void __gcov_flush() {
>> -  struct flush_fn_node *curr = flush_fn_head;
>> +  struct fn_node* curr = flush_fn_list.head;
>>  
>>    while (curr) {
>>      curr->fn();
>> @@ -541,25 +564,13 @@ void __gcov_flush() {
>>    }
>>  }
>>  
>> -// llvm_gcov_flush is not hidden for a program to use dlsym to
>> -// find and call for any linked .so file.
>> -void llvm_gcov_flush() {
>> -  __gcov_flush();
>> -}
>> -
>>  COMPILER_RT_VISIBILITY
>>  void llvm_delete_flush_function_list(void) {
>> -  while (flush_fn_head) {
>> -    struct flush_fn_node *node = flush_fn_head;
>> -    flush_fn_head = flush_fn_head->next;
>> -    free(node);
>> -  }
>> -
>> -  flush_fn_head = flush_fn_tail = NULL;
>> +  fn_list_remove(&flush_fn_list);
>>  }
>>  
>>  COMPILER_RT_VISIBILITY
>> -void llvm_gcov_init(writeout_fn wfn, flush_fn ffn) {
>> +void llvm_gcov_init(fn_ptr wfn, fn_ptr ffn) {
>>    static int atexit_ran = 0;
>>  
>>    if (wfn)
>> 
>> Modified: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c?rev=336365&r1=336364&r2=336365&view=diff <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c?rev=336365&r1=336364&r2=336365&view=diff>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c (original)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c Thu Jul  5 08:52:59 2018
>> @@ -10,6 +10,12 @@ int main(int argc, char *argv[]) {
>>      return EXIT_FAILURE;
>>    }
>>  
>> +  void (*func)(void) = (void (*)(void))dlsym(f1_handle, "func");
>> +  if (func == NULL) {
>> +    fprintf(stderr, "unable to lookup symbol 'func': %s\n", dlerror());
>> +    return EXIT_FAILURE;
>> +  }
>> +
>>    dlerror();
>>    void *f2_handle = dlopen("func2.shared", RTLD_LAZY | RTLD_GLOBAL);
>>    if (f2_handle == NULL) {
>> @@ -17,31 +23,44 @@ int main(int argc, char *argv[]) {
>>      return EXIT_FAILURE;
>>    }
>>  
>> -  dlerror();
>> -  void (*gcov_flush)() = (void (*)())dlsym(f1_handle, "__gcov_flush");
>> -  if (gcov_flush != NULL || dlerror() == NULL) {
>> -    fprintf(stderr, "__gcov_flush should not be visible in func.shared'\n");
>> +  void (*func2)(void) = (void (*)(void))dlsym(f2_handle, "func2");
>> +  if (func2 == NULL) {
>> +    fprintf(stderr, "unable to lookup symbol 'func2': %s\n", dlerror());
>> +    return EXIT_FAILURE;
>> +  }
>> +  func2();
>> +
>> +#ifdef USE_LIB3
>> +  void *f3_handle = dlopen("func3.shared", RTLD_LAZY | RTLD_GLOBAL);
>> +  if (f3_handle == NULL) {
>> +    fprintf(stderr, "unable to open 'func3.shared': %s\n", dlerror());
>> +    return EXIT_FAILURE;
>> +  }
>> +
>> +  void (*func3)(void) = (void (*)(void))dlsym(f3_handle, "func3");
>> +  if (func3 == NULL) {
>> +    fprintf(stderr, "unable to lookup symbol 'func3': %s\n", dlerror());
>>      return EXIT_FAILURE;
>>    }
>> +  func3();
>> +#endif
>>  
>>    dlerror();
>> -  void (*f1_flush)() = (void (*)())dlsym(f1_handle, "llvm_gcov_flush");
>> -  if (f1_flush == NULL) {
>> -    fprintf(stderr, "unable to find llvm_gcov_flush in func.shared': %s\n", dlerror());
>> +  void (*gcov_flush1)() = (void (*)())dlsym(f1_handle, "__gcov_flush");
>> +  if (gcov_flush1 == NULL) {
>> +    fprintf(stderr, "unable to find __gcov_flush in func.shared': %s\n", dlerror());
>>      return EXIT_FAILURE;
>>    }
>> -  f1_flush();
>>  
>>    dlerror();
>> -  void (*f2_flush)() = (void (*)())dlsym(f2_handle, "llvm_gcov_flush");
>> -  if (f2_flush == NULL) {
>> -    fprintf(stderr, "unable to find llvm_gcov_flush in func2.shared': %s\n", dlerror());
>> +  void (*gcov_flush2)() = (void (*)())dlsym(f2_handle, "__gcov_flush");
>> +  if (gcov_flush2 == NULL) {
>> +    fprintf(stderr, "unable to find __gcov_flush in func2.shared': %s\n", dlerror());
>>      return EXIT_FAILURE;
>>    }
>> -  f2_flush();
>>  
>> -  if (f1_flush == f2_flush) {
>> -    fprintf(stderr, "Same llvm_gcov_flush found in func.shared and func2.shared\n");
>> +  if (gcov_flush1 == gcov_flush2) {
>> +    fprintf(stderr, "Same __gcov_flush found in func.shared and func2.shared\n");
>>      return EXIT_FAILURE;
>>    }
>>  
>> @@ -51,6 +70,17 @@ int main(int argc, char *argv[]) {
>>      return EXIT_FAILURE;
>>    }
>>  
>> +  func();
>> +
>> +  int g1 = 0;
>> +  int g2 = 0;
>> +  int n = 10;
>> +
>> +  if (n % 5 == 0)
>> +    g1++;
>> +  else
>> +    g2++;
>> +
>>    return EXIT_SUCCESS;
>>  }
>>  
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,91 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-dlopen-dlclose-main.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-dlopen-dlclose-main.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-dlopen-dlclose-main.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:#include <dlfcn.h>
>> +// CHECK-NEXT:        -:    2:#include <stdio.h>
>> +// CHECK-NEXT:        -:    3:#include <stdlib.h>
>> +// CHECK-NEXT:        -:    4:
>> +// CHECK-NEXT:        -:    5:int main(int argc, char *argv[]) {
>> +// CHECK-NEXT:        1:    6:  dlerror();
>> +// CHECK-NEXT:        1:    7:  void *f1_handle = dlopen("func.shared", RTLD_LAZY | RTLD_GLOBAL);
>> +// CHECK-NEXT:        1:    8:  if (f1_handle == NULL) {
>> +// CHECK-NEXT:    #####:    9:    fprintf(stderr, "unable to open 'func.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   10:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   11:  }
>> +// CHECK-NEXT:        -:   12:
>> +// CHECK-NEXT:        1:   13:  void (*func)(void) = (void (*)(void))dlsym(f1_handle, "func");
>> +// CHECK-NEXT:        1:   14:  if (func == NULL) {
>> +// CHECK-NEXT:    #####:   15:    fprintf(stderr, "unable to lookup symbol 'func': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   16:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   17:  }
>> +// CHECK-NEXT:        -:   18:
>> +// CHECK-NEXT:        1:   19:  dlerror();
>> +// CHECK-NEXT:        1:   20:  void *f2_handle = dlopen("func2.shared", RTLD_LAZY | RTLD_GLOBAL);
>> +// CHECK-NEXT:        1:   21:  if (f2_handle == NULL) {
>> +// CHECK-NEXT:    #####:   22:    fprintf(stderr, "unable to open 'func2.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   23:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   24:  }
>> +// CHECK-NEXT:        -:   25:
>> +// CHECK-NEXT:        1:   26:  void (*func2)(void) = (void (*)(void))dlsym(f2_handle, "func2");
>> +// CHECK-NEXT:        1:   27:  if (func2 == NULL) {
>> +// CHECK-NEXT:    #####:   28:    fprintf(stderr, "unable to lookup symbol 'func2': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   29:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   30:  }
>> +// CHECK-NEXT:        1:   31:  func2();
>> +// CHECK-NEXT:        -:   32:
>> +// CHECK-NEXT:        -:   33:#ifdef USE_LIB3
>> +// CHECK-NEXT:        -:   34:  void *f3_handle = dlopen("func3.shared", RTLD_LAZY | RTLD_GLOBAL);
>> +// CHECK-NEXT:        -:   35:  if (f3_handle == NULL) {
>> +// CHECK-NEXT:        -:   36:    fprintf(stderr, "unable to open 'func3.shared': %s\n", dlerror());
>> +// CHECK-NEXT:        -:   37:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   38:  }
>> +// CHECK-NEXT:        -:   39:
>> +// CHECK-NEXT:        -:   40:  void (*func3)(void) = (void (*)(void))dlsym(f3_handle, "func3");
>> +// CHECK-NEXT:        -:   41:  if (func3 == NULL) {
>> +// CHECK-NEXT:        -:   42:    fprintf(stderr, "unable to lookup symbol 'func3': %s\n", dlerror());
>> +// CHECK-NEXT:        -:   43:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   44:  }
>> +// CHECK-NEXT:        -:   45:  func3();
>> +// CHECK-NEXT:        -:   46:#endif
>> +// CHECK-NEXT:        -:   47:
>> +// CHECK-NEXT:        1:   48:  dlerror();
>> +// CHECK-NEXT:        1:   49:  void (*gcov_flush1)() = (void (*)())dlsym(f1_handle, "__gcov_flush");
>> +// CHECK-NEXT:        1:   50:  if (gcov_flush1 == NULL) {
>> +// CHECK-NEXT:    #####:   51:    fprintf(stderr, "unable to find __gcov_flush in func.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   52:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   53:  }
>> +// CHECK-NEXT:        -:   54:
>> +// CHECK-NEXT:        1:   55:  dlerror();
>> +// CHECK-NEXT:        1:   56:  void (*gcov_flush2)() = (void (*)())dlsym(f2_handle, "__gcov_flush");
>> +// CHECK-NEXT:        1:   57:  if (gcov_flush2 == NULL) {
>> +// CHECK-NEXT:    #####:   58:    fprintf(stderr, "unable to find __gcov_flush in func2.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   59:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   60:  }
>> +// CHECK-NEXT:        -:   61:
>> +// CHECK-NEXT:        1:   62:  if (gcov_flush1 == gcov_flush2) {
>> +// CHECK-NEXT:    #####:   63:    fprintf(stderr, "Same __gcov_flush found in func.shared and func2.shared\n");
>> +// CHECK-NEXT:    #####:   64:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   65:  }
>> +// CHECK-NEXT:        -:   66:
>> +// CHECK-NEXT:        1:   67:  dlerror();
>> +// CHECK-NEXT:        1:   68:  if (dlclose(f2_handle) != 0) {
>> +// CHECK-NEXT:    #####:   69:    fprintf(stderr, "unable to close 'func2.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   70:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   71:  }
>> +// CHECK-NEXT:        -:   72:
>> +// CHECK-NEXT:        1:   73:  func();
>> +// CHECK-NEXT:        -:   74:
>> +// CHECK-NEXT:        1:   75:  int g1 = 0;
>> +// CHECK-NEXT:        1:   76:  int g2 = 0;
>> +// CHECK-NEXT:        1:   77:  int n = 10;
>> +// CHECK-NEXT:        -:   78:
>> +// CHECK-NEXT:        1:   79:  if (n % 5 == 0)
>> +// CHECK-NEXT:        1:   80:    g1++;
>> +// CHECK-NEXT:        -:   81:  else
>> +// CHECK-NEXT:    #####:   82:    g2++;
>> +// CHECK-NEXT:        -:   83:
>> +// CHECK-NEXT:        1:   84:  return EXIT_SUCCESS;
>> +// CHECK-NEXT:        1:   85:}
>> +// CHECK-NEXT:        -:   86:
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,91 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-dlopen-dlclose-main.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-dlopen-dlclose-main.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-dlopen-dlclose-main.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:#include <dlfcn.h>
>> +// CHECK-NEXT:        -:    2:#include <stdio.h>
>> +// CHECK-NEXT:        -:    3:#include <stdlib.h>
>> +// CHECK-NEXT:        -:    4:
>> +// CHECK-NEXT:        -:    5:int main(int argc, char *argv[]) {
>> +// CHECK-NEXT:        1:    6:  dlerror();
>> +// CHECK-NEXT:        1:    7:  void *f1_handle = dlopen("func.shared", RTLD_LAZY | RTLD_GLOBAL);
>> +// CHECK-NEXT:        1:    8:  if (f1_handle == NULL) {
>> +// CHECK-NEXT:    #####:    9:    fprintf(stderr, "unable to open 'func.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   10:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   11:  }
>> +// CHECK-NEXT:        -:   12:
>> +// CHECK-NEXT:        1:   13:  void (*func)(void) = (void (*)(void))dlsym(f1_handle, "func");
>> +// CHECK-NEXT:        1:   14:  if (func == NULL) {
>> +// CHECK-NEXT:    #####:   15:    fprintf(stderr, "unable to lookup symbol 'func': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   16:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   17:  }
>> +// CHECK-NEXT:        -:   18:
>> +// CHECK-NEXT:        1:   19:  dlerror();
>> +// CHECK-NEXT:        1:   20:  void *f2_handle = dlopen("func2.shared", RTLD_LAZY | RTLD_GLOBAL);
>> +// CHECK-NEXT:        1:   21:  if (f2_handle == NULL) {
>> +// CHECK-NEXT:    #####:   22:    fprintf(stderr, "unable to open 'func2.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   23:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   24:  }
>> +// CHECK-NEXT:        -:   25:
>> +// CHECK-NEXT:        1:   26:  void (*func2)(void) = (void (*)(void))dlsym(f2_handle, "func2");
>> +// CHECK-NEXT:        1:   27:  if (func2 == NULL) {
>> +// CHECK-NEXT:    #####:   28:    fprintf(stderr, "unable to lookup symbol 'func2': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   29:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   30:  }
>> +// CHECK-NEXT:        1:   31:  func2();
>> +// CHECK-NEXT:        -:   32:
>> +// CHECK-NEXT:        -:   33:#ifdef USE_LIB3
>> +// CHECK-NEXT:        1:   34:  void *f3_handle = dlopen("func3.shared", RTLD_LAZY | RTLD_GLOBAL);
>> +// CHECK-NEXT:        1:   35:  if (f3_handle == NULL) {
>> +// CHECK-NEXT:    #####:   36:    fprintf(stderr, "unable to open 'func3.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   37:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   38:  }
>> +// CHECK-NEXT:        -:   39:
>> +// CHECK-NEXT:        1:   40:  void (*func3)(void) = (void (*)(void))dlsym(f3_handle, "func3");
>> +// CHECK-NEXT:        1:   41:  if (func3 == NULL) {
>> +// CHECK-NEXT:    #####:   42:    fprintf(stderr, "unable to lookup symbol 'func3': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   43:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   44:  }
>> +// CHECK-NEXT:        1:   45:  func3();
>> +// CHECK-NEXT:        -:   46:#endif
>> +// CHECK-NEXT:        -:   47:
>> +// CHECK-NEXT:        1:   48:  dlerror();
>> +// CHECK-NEXT:        1:   49:  void (*gcov_flush1)() = (void (*)())dlsym(f1_handle, "__gcov_flush");
>> +// CHECK-NEXT:        1:   50:  if (gcov_flush1 == NULL) {
>> +// CHECK-NEXT:    #####:   51:    fprintf(stderr, "unable to find __gcov_flush in func.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   52:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   53:  }
>> +// CHECK-NEXT:        -:   54:
>> +// CHECK-NEXT:        1:   55:  dlerror();
>> +// CHECK-NEXT:        1:   56:  void (*gcov_flush2)() = (void (*)())dlsym(f2_handle, "__gcov_flush");
>> +// CHECK-NEXT:        1:   57:  if (gcov_flush2 == NULL) {
>> +// CHECK-NEXT:    #####:   58:    fprintf(stderr, "unable to find __gcov_flush in func2.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   59:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   60:  }
>> +// CHECK-NEXT:        -:   61:
>> +// CHECK-NEXT:        1:   62:  if (gcov_flush1 == gcov_flush2) {
>> +// CHECK-NEXT:    #####:   63:    fprintf(stderr, "Same __gcov_flush found in func.shared and func2.shared\n");
>> +// CHECK-NEXT:    #####:   64:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   65:  }
>> +// CHECK-NEXT:        -:   66:
>> +// CHECK-NEXT:        1:   67:  dlerror();
>> +// CHECK-NEXT:        1:   68:  if (dlclose(f2_handle) != 0) {
>> +// CHECK-NEXT:    #####:   69:    fprintf(stderr, "unable to close 'func2.shared': %s\n", dlerror());
>> +// CHECK-NEXT:    #####:   70:    return EXIT_FAILURE;
>> +// CHECK-NEXT:        -:   71:  }
>> +// CHECK-NEXT:        -:   72:
>> +// CHECK-NEXT:        1:   73:  func();
>> +// CHECK-NEXT:        -:   74:
>> +// CHECK-NEXT:        1:   75:  int g1 = 0;
>> +// CHECK-NEXT:        1:   76:  int g2 = 0;
>> +// CHECK-NEXT:        1:   77:  int n = 10;
>> +// CHECK-NEXT:        -:   78:
>> +// CHECK-NEXT:        1:   79:  if (n % 5 == 0)
>> +// CHECK-NEXT:        1:   80:    g1++;
>> +// CHECK-NEXT:        -:   81:  else
>> +// CHECK-NEXT:    #####:   82:    g2++;
>> +// CHECK-NEXT:        -:   83:
>> +// CHECK-NEXT:        1:   84:  return EXIT_SUCCESS;
>> +// CHECK-NEXT:        1:   85:}
>> +// CHECK-NEXT:        -:   86:
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,6 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-dlopen-func.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-dlopen-func.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-dlopen-func.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        3:    1:void func(int K) { if (K) {} }
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,6 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-dlopen-func2.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-dlopen-func2.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-dlopen-func2.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        3:    1:void func2(int K) { if (K) {} }
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1 @@
>> +void func3(int K) { if (K) {} }
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,6 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-dlopen-func2.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-dlopen-func2.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-dlopen-func2.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        3:    1:void func2(int K) { if (K) {} }
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,14 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-lib.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-lib.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-lib.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:int g1 = 0;
>> +// CHECK-NEXT:        -:    2:int g2 = 1;
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:void foo(int n) {
>> +// CHECK-NEXT:        1:    5:  if (n % 5 == 0)
>> +// CHECK-NEXT:    #####:    6:    g1++;
>> +// CHECK-NEXT:        -:    7:  else
>> +// CHECK-NEXT:        1:    8:    g2++;
>> +// CHECK-NEXT:        1:    9:}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,14 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-lib.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-lib.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-lib.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:int g1 = 0;
>> +// CHECK-NEXT:        -:    2:int g2 = 1;
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:void foo(int n) {
>> +// CHECK-NEXT:        2:    5:  if (n % 5 == 0)
>> +// CHECK-NEXT:    #####:    6:    g1++;
>> +// CHECK-NEXT:        -:    7:  else
>> +// CHECK-NEXT:        2:    8:    g2++;
>> +// CHECK-NEXT:        2:    9:}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,14 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-lib.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-lib.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-lib.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:int g1 = 0;
>> +// CHECK-NEXT:        -:    2:int g2 = 1;
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:void foo(int n) {
>> +// CHECK-NEXT:  1000000:    5:  if (n % 5 == 0)
>> +// CHECK-NEXT:   360000:    6:    g1++;
>> +// CHECK-NEXT:        -:    7:  else
>> +// CHECK-NEXT:   640000:    8:    g2++;
>> +// CHECK-NEXT:  1000000:    9:}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,36 @@
>> +extern void foo(int n);
>> +extern void __gcov_flush(void);
>> +
>> +int bar1 = 0;
>> +int bar2 = 1;
>> +
>> +void bar(int n) {
>> +  if (n % 5 == 0)
>> +    bar1++;
>> +  else
>> +    bar2++;
>> +}
>> +
>> +int main(int argc, char *argv[]) {
>> +#ifdef SHARED_CALL_BEFORE_GCOV_FLUSH
>> +  foo(1);
>> +#endif
>> +
>> +  bar(5);
>> +
>> +  __gcov_flush();
>> +
>> +  bar(5);
>> +
>> +#ifdef SHARED_CALL_AFTER_GCOV_FLUSH
>> +  foo(1);
>> +#endif
>> +
>> +#ifdef EXIT_ABRUPTLY
>> +  _exit(0);
>> +#endif
>> +
>> +  bar(5);
>> +
>> +  return 0;
>> +}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,41 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-main-gcov-flush.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-main-gcov-flush.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-main-gcov-flush.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:extern void foo(int n);
>> +// CHECK-NEXT:        -:    2:extern void __gcov_flush(void);
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:int bar1 = 0;
>> +// CHECK-NEXT:        -:    5:int bar2 = 1;
>> +// CHECK-NEXT:        -:    6:
>> +// CHECK-NEXT:        -:    7:void bar(int n) {
>> +// CHECK-NEXT:        1:    8:  if (n % 5 == 0)
>> +// CHECK-NEXT:        1:    9:    bar1++;
>> +// CHECK-NEXT:        -:   10:  else
>> +// CHECK-NEXT:    #####:   11:    bar2++;
>> +// CHECK-NEXT:        1:   12:}
>> +// CHECK-NEXT:        -:   13:
>> +// CHECK-NEXT:        -:   14:int main(int argc, char *argv[]) {
>> +// CHECK-NEXT:        -:   15:#ifdef SHARED_CALL_BEFORE_GCOV_FLUSH
>> +// CHECK-NEXT:        1:   16:  foo(1);
>> +// CHECK-NEXT:        -:   17:#endif
>> +// CHECK-NEXT:        -:   18:
>> +// CHECK-NEXT:        1:   19:  bar(5);
>> +// CHECK-NEXT:        -:   20:
>> +// CHECK-NEXT:        1:   21:  __gcov_flush();
>> +// CHECK-NEXT:        -:   22:
>> +// CHECK-NEXT:        1:   23:  bar(5);
>> +// CHECK-NEXT:        -:   24:
>> +// CHECK-NEXT:        -:   25:#ifdef SHARED_CALL_AFTER_GCOV_FLUSH
>> +// CHECK-NEXT:        1:   26:  foo(1);
>> +// CHECK-NEXT:        -:   27:#endif
>> +// CHECK-NEXT:        -:   28:
>> +// CHECK-NEXT:        -:   29:#ifdef EXIT_ABRUPTLY
>> +// CHECK-NEXT:        1:   30:  _exit(0);
>> +// CHECK-NEXT:        -:   31:#endif
>> +// CHECK-NEXT:        -:   32:
>> +// CHECK-NEXT:        -:   33:  bar(5);
>> +// CHECK-NEXT:        -:   34:
>> +// CHECK-NEXT:        -:   35:  return 0;
>> +// CHECK-NEXT:    #####:   36:}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,41 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-main-gcov-flush.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-main-gcov-flush.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-main-gcov-flush.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:extern void foo(int n);
>> +// CHECK-NEXT:        -:    2:extern void __gcov_flush(void);
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:int bar1 = 0;
>> +// CHECK-NEXT:        -:    5:int bar2 = 1;
>> +// CHECK-NEXT:        -:    6:
>> +// CHECK-NEXT:        -:    7:void bar(int n) {
>> +// CHECK-NEXT:        3:    8:  if (n % 5 == 0)
>> +// CHECK-NEXT:        3:    9:    bar1++;
>> +// CHECK-NEXT:        -:   10:  else
>> +// CHECK-NEXT:    #####:   11:    bar2++;
>> +// CHECK-NEXT:        3:   12:}
>> +// CHECK-NEXT:        -:   13:
>> +// CHECK-NEXT:        -:   14:int main(int argc, char *argv[]) {
>> +// CHECK-NEXT:        -:   15:#ifdef SHARED_CALL_BEFORE_GCOV_FLUSH
>> +// CHECK-NEXT:        -:   16:  foo(1);
>> +// CHECK-NEXT:        -:   17:#endif
>> +// CHECK-NEXT:        -:   18:
>> +// CHECK-NEXT:        1:   19:  bar(5);
>> +// CHECK-NEXT:        -:   20:
>> +// CHECK-NEXT:        1:   21:  __gcov_flush();
>> +// CHECK-NEXT:        -:   22:
>> +// CHECK-NEXT:        1:   23:  bar(5);
>> +// CHECK-NEXT:        -:   24:
>> +// CHECK-NEXT:        -:   25:#ifdef SHARED_CALL_AFTER_GCOV_FLUSH
>> +// CHECK-NEXT:        1:   26:  foo(1);
>> +// CHECK-NEXT:        -:   27:#endif
>> +// CHECK-NEXT:        -:   28:
>> +// CHECK-NEXT:        -:   29:#ifdef EXIT_ABRUPTLY
>> +// CHECK-NEXT:        -:   30:  _exit(0);
>> +// CHECK-NEXT:        -:   31:#endif
>> +// CHECK-NEXT:        -:   32:
>> +// CHECK-NEXT:        1:   33:  bar(5);
>> +// CHECK-NEXT:        -:   34:
>> +// CHECK-NEXT:        1:   35:  return 0;
>> +// CHECK-NEXT:        -:   36:}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,41 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-main-gcov-flush.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-main-gcov-flush.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-main-gcov-flush.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:extern void foo(int n);
>> +// CHECK-NEXT:        -:    2:extern void __gcov_flush(void);
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:int bar1 = 0;
>> +// CHECK-NEXT:        -:    5:int bar2 = 1;
>> +// CHECK-NEXT:        -:    6:
>> +// CHECK-NEXT:        -:    7:void bar(int n) {
>> +// CHECK-NEXT:        3:    8:  if (n % 5 == 0)
>> +// CHECK-NEXT:        3:    9:    bar1++;
>> +// CHECK-NEXT:        -:   10:  else
>> +// CHECK-NEXT:    #####:   11:    bar2++;
>> +// CHECK-NEXT:        3:   12:}
>> +// CHECK-NEXT:        -:   13:
>> +// CHECK-NEXT:        -:   14:int main(int argc, char *argv[]) {
>> +// CHECK-NEXT:        -:   15:#ifdef SHARED_CALL_BEFORE_GCOV_FLUSH
>> +// CHECK-NEXT:        1:   16:  foo(1);
>> +// CHECK-NEXT:        -:   17:#endif
>> +// CHECK-NEXT:        -:   18:
>> +// CHECK-NEXT:        1:   19:  bar(5);
>> +// CHECK-NEXT:        -:   20:
>> +// CHECK-NEXT:        1:   21:  __gcov_flush();
>> +// CHECK-NEXT:        -:   22:
>> +// CHECK-NEXT:        1:   23:  bar(5);
>> +// CHECK-NEXT:        -:   24:
>> +// CHECK-NEXT:        -:   25:#ifdef SHARED_CALL_AFTER_GCOV_FLUSH
>> +// CHECK-NEXT:        1:   26:  foo(1);
>> +// CHECK-NEXT:        -:   27:#endif
>> +// CHECK-NEXT:        -:   28:
>> +// CHECK-NEXT:        -:   29:#ifdef EXIT_ABRUPTLY
>> +// CHECK-NEXT:        -:   30:  _exit(0);
>> +// CHECK-NEXT:        -:   31:#endif
>> +// CHECK-NEXT:        -:   32:
>> +// CHECK-NEXT:        1:   33:  bar(5);
>> +// CHECK-NEXT:        -:   34:
>> +// CHECK-NEXT:        1:   35:  return 0;
>> +// CHECK-NEXT:        -:   36:}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,41 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-main-gcov-flush.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-main-gcov-flush.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-main-gcov-flush.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:extern void foo(int n);
>> +// CHECK-NEXT:        -:    2:extern void __gcov_flush(void);
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:int bar1 = 0;
>> +// CHECK-NEXT:        -:    5:int bar2 = 1;
>> +// CHECK-NEXT:        -:    6:
>> +// CHECK-NEXT:        -:    7:void bar(int n) {
>> +// CHECK-NEXT:        3:    8:  if (n % 5 == 0)
>> +// CHECK-NEXT:        3:    9:    bar1++;
>> +// CHECK-NEXT:        -:   10:  else
>> +// CHECK-NEXT:    #####:   11:    bar2++;
>> +// CHECK-NEXT:        3:   12:}
>> +// CHECK-NEXT:        -:   13:
>> +// CHECK-NEXT:        -:   14:int main(int argc, char *argv[]) {
>> +// CHECK-NEXT:        -:   15:#ifdef SHARED_CALL_BEFORE_GCOV_FLUSH
>> +// CHECK-NEXT:        1:   16:  foo(1);
>> +// CHECK-NEXT:        -:   17:#endif
>> +// CHECK-NEXT:        -:   18:
>> +// CHECK-NEXT:        1:   19:  bar(5);
>> +// CHECK-NEXT:        -:   20:
>> +// CHECK-NEXT:        1:   21:  __gcov_flush();
>> +// CHECK-NEXT:        -:   22:
>> +// CHECK-NEXT:        1:   23:  bar(5);
>> +// CHECK-NEXT:        -:   24:
>> +// CHECK-NEXT:        -:   25:#ifdef SHARED_CALL_AFTER_GCOV_FLUSH
>> +// CHECK-NEXT:        -:   26:  foo(1);
>> +// CHECK-NEXT:        -:   27:#endif
>> +// CHECK-NEXT:        -:   28:
>> +// CHECK-NEXT:        -:   29:#ifdef EXIT_ABRUPTLY
>> +// CHECK-NEXT:        -:   30:  _exit(0);
>> +// CHECK-NEXT:        -:   31:#endif
>> +// CHECK-NEXT:        -:   32:
>> +// CHECK-NEXT:        1:   33:  bar(5);
>> +// CHECK-NEXT:        -:   34:
>> +// CHECK-NEXT:        1:   35:  return 0;
>> +// CHECK-NEXT:        -:   36:}
>> 
>> Added: compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov (added)
>> +++ compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,18 @@
>> +// CHECK:        -:    0:Source:{{.*}}Inputs/instrprof-shared-main.c
>> +// CHECK-NEXT:        -:    0:Graph:instrprof-shared-main.gcno
>> +// CHECK-NEXT:        -:    0:Data:instrprof-shared-main.gcda
>> +// CHECK-NEXT:        -:    0:Runs:1
>> +// CHECK-NEXT:        -:    0:Programs:1
>> +// CHECK-NEXT:        -:    1:extern int g1, g2;
>> +// CHECK-NEXT:        -:    2:extern void foo(int n);
>> +// CHECK-NEXT:        -:    3:
>> +// CHECK-NEXT:        -:    4:int main() {
>> +// CHECK-NEXT:        -:    5:  int i, j;
>> +// CHECK-NEXT:     2002:    6:  for (i = 0; i < 1000; i++)
>> +// CHECK-NEXT:  2002000:    7:    for (j = 0; j < 1000; j++)
>> +// CHECK-NEXT:  1001000:    8:      foo(i * j);
>> +// CHECK-NEXT:        -:    9:
>> +// CHECK-NEXT:        1:   10:  if (g2 - g1 == 280001)
>> +// CHECK-NEXT:        1:   11:    return 0;
>> +// CHECK-NEXT:    #####:   12:  return 1;
>> +// CHECK-NEXT:        1:   13:}
>> 
>> Modified: compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test?rev=336365&r1=336364&r2=336365&view=diff <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test?rev=336365&r1=336364&r2=336365&view=diff>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test (original)
>> +++ compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test Thu Jul  5 08:52:59 2018
>> @@ -1,6 +1,30 @@
>>  RUN: mkdir -p %t.d
>> -RUN: %clang --coverage -o %t.d/func.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func.c
>> -RUN: %clang --coverage -o %t.d/func2.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func2.c
>> +RUN: cd %t.d
>> +
>> +RUN: %clang --coverage -o func.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func.c
>> +RUN: %clang --coverage -o func2.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func2.c
>> +RUN: %clang --coverage -o func3.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func3.c
>>  RUN: %clang --coverage -o %t -fPIC -rpath %t.d %S/Inputs/instrprof-dlopen-dlclose-main.c
>>  
>> +# Test with two dlopened libraries.
>> +RUN: %run %t
>> +RUN: llvm-cov gcov instrprof-dlopen-dlclose-main.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-dlclose-main.c.gcov %S/Inputs/instrprof-dlopen-dlclose-main.c.gcov
>> +RUN: llvm-cov gcov instrprof-dlopen-func.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func.c.gcov %S/Inputs/instrprof-dlopen-func.c.gcov
>> +RUN: llvm-cov gcov instrprof-dlopen-func2.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func2.c.gcov %S/Inputs/instrprof-dlopen-func2.c.gcov
>> +RUN: rm instrprof-dlopen-dlclose-main.gcda instrprof-dlopen-func.gcda instrprof-dlopen-func2.gcda
>> +
>> +# Test with three dlopened libraries.
>> +RUN: %clang -DUSE_LIB3 --coverage -o %t -fPIC -rpath %t.d %S/Inputs/instrprof-dlopen-dlclose-main.c
>>  RUN: %run %t
>> +RUN: llvm-cov gcov instrprof-dlopen-dlclose-main.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-dlclose-main.c.gcov %S/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov
>> +RUN: llvm-cov gcov instrprof-dlopen-func.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func.c.gcov %S/Inputs/instrprof-dlopen-func.c.gcov
>> +RUN: llvm-cov gcov instrprof-dlopen-func2.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func2.c.gcov %S/Inputs/instrprof-dlopen-func2.c.gcov
>> +RUN: llvm-cov gcov instrprof-dlopen-func3.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func2.c.gcov %S/Inputs/instrprof-dlopen-func3.c.gcov
>> +RUN: rm instrprof-dlopen-dlclose-main.gcda instrprof-dlopen-func.gcda instrprof-dlopen-func2.gcda instrprof-dlopen-func3.gcda
>> 
>> Added: compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test (added)
>> +++ compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,18 @@
>> +RUN: mkdir -p %t.d
>> +RUN: cd %t.d
>> +
>> +RUN: %clang --coverage -o instrprof-shared-lib.o -c %S/Inputs/instrprof-shared-lib.c
>> +RUN: test -f instrprof-shared-lib.gcno
>> +
>> +RUN: %clang --coverage -o instrprof-shared-main.o -c %S/Inputs/instrprof-shared-main.c
>> +RUN: test -f instrprof-shared-main.gcno
>> +
>> +RUN: %clang --coverage -o %t instrprof-shared-main.o instrprof-shared-lib.o
>> +RUN: test -f %t
>> +
>> +RUN: %run %t
>> +RUN: llvm-cov gcov instrprof-shared-main.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-main.c.gcov %S/Inputs/instrprof-shared-main.c.gcov
>> +RUN: llvm-cov gcov instrprof-shared-lib.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-lib.c.gcov %S/Inputs/instrprof-shared-lib_in-loop.c.gcov
>> +RUN: rm instrprof-shared-main.gcda instrprof-shared-lib.gcda
>> 
>> Added: compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test
>> URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test?rev=336365&view=auto <http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test?rev=336365&view=auto>
>> ==============================================================================
>> --- compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test (added)
>> +++ compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test Thu Jul  5 08:52:59 2018
>> @@ -0,0 +1,49 @@
>> +RUN: mkdir -p %t.d
>> +RUN: cd %t.d
>> +
>> +RUN: %clang --coverage -o libfunc.so -fPIC -shared %S/Inputs/instrprof-shared-lib.c
>> +RUN: test -f instrprof-shared-lib.gcno
>> +
>> +# Test the case where we exit abruptly after calling __gcov_flush, which means we don't write out the counters at exit.
>> +RUN: %clang -DEXIT_ABRUPTLY -DSHARED_CALL_BEFORE_GCOV_FLUSH -DSHARED_CALL_AFTER_GCOV_FLUSH --coverage -o %t -L%t.d -rpath %t.d -lfunc %S/Inputs/instrprof-shared-main-gcov-flush.c
>> +RUN: test -f instrprof-shared-main-gcov-flush.gcno
>> +
>> +RUN: %run %t
>> +RUN: llvm-cov gcov instrprof-shared-main-gcov-flush.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-main-gcov-flush.c.gcov %S/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov
>> +RUN: llvm-cov gcov instrprof-shared-lib.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-lib.c.gcov %S/Inputs/instrprof-shared-lib.c.gcov
>> +RUN: rm instrprof-shared-main-gcov-flush.gcda instrprof-shared-lib.gcda
>> +
>> +# Test the case where we exit normally and we have a call to the shared library function before __gcov_flush.
>> +RUN: %clang -DSHARED_CALL_BEFORE_GCOV_FLUSH --coverage -o %t -L%t.d -rpath %t.d -lfunc %S/Inputs/instrprof-shared-main-gcov-flush.c
>> +RUN: test -f instrprof-shared-main-gcov-flush.gcno
>> +
>> +RUN: %run %t
>> +RUN: llvm-cov gcov instrprof-shared-main-gcov-flush.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-main-gcov-flush.c.gcov %S/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov
>> +RUN: llvm-cov gcov instrprof-shared-lib.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-lib.c.gcov %S/Inputs/instrprof-shared-lib.c.gcov
>> +RUN: rm instrprof-shared-main-gcov-flush.gcda instrprof-shared-lib.gcda
>> +
>> +# Test the case where we exit normally and we have a call to the shared library function after __gcov_flush.
>> +RUN: %clang -DSHARED_CALL_AFTER_GCOV_FLUSH --coverage -o %t -L%t.d -rpath %t.d -lfunc %S/Inputs/instrprof-shared-main-gcov-flush.c
>> +RUN: test -f instrprof-shared-main-gcov-flush.gcno
>> +
>> +RUN: %run %t
>> +RUN: llvm-cov gcov instrprof-shared-main-gcov-flush.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-main-gcov-flush.c.gcov %S/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov
>> +RUN: llvm-cov gcov instrprof-shared-lib.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-lib.c.gcov %S/Inputs/instrprof-shared-lib.c.gcov
>> +RUN: rm instrprof-shared-main-gcov-flush.gcda instrprof-shared-lib.gcda
>> +
>> +# Test the case where we exit normally and we have calls to the shared library function before and after __gcov_flush.
>> +RUN: %clang -DSHARED_CALL_BEFORE_GCOV_FLUSH -DSHARED_CALL_AFTER_GCOV_FLUSH --coverage -o %t -L%t.d -rpath %t.d -lfunc %S/Inputs/instrprof-shared-main-gcov-flush.c
>> +RUN: test -f instrprof-shared-main-gcov-flush.gcno
>> +
>> +RUN: %run %t
>> +RUN: llvm-cov gcov instrprof-shared-main-gcov-flush.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-main-gcov-flush.c.gcov %S/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov
>> +RUN: llvm-cov gcov instrprof-shared-lib.gcda
>> +RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-shared-lib.c.gcov %S/Inputs/instrprof-shared-lib_called-twice.c.gcov
>> +RUN: rm instrprof-shared-main-gcov-flush.gcda instrprof-shared-lib.gcda
>> 
>> 
>> _______________________________________________
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>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits <http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits>
>>  
>>  
>> 
> 
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