llvm-project/compiler-rt/test/profile/instrprof-merge-entry-cover.c

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

95 lines
2.3 KiB
C
Raw Normal View History

// XFAIL: aix
// RUN: %clang_pgogen -O2 -mllvm -pgo-function-entry-coverage -o %t %s
// RUN: %run %t %t.profraw 1 1
// RUN: llvm-profdata show --all-functions --counts %t.profraw | FileCheck %s
// FIXME: llvm-profdata exits with "Malformed instrumentation profile data"
// XFAIL: msvc
#include "profile_test.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
int __llvm_profile_runtime = 0;
uint64_t __llvm_profile_get_size_for_buffer(void);
int __llvm_profile_write_buffer(char *);
void __llvm_profile_reset_counters(void);
int __llvm_profile_merge_from_buffer(const char *, uint64_t);
__attribute__((noinline)) int dumpBuffer(const char *FileN, const char *Buffer,
uint64_t Size) {
FILE *File = fopen(FileN, "w");
if (!File)
return 1;
if (fwrite(Buffer, 1, Size, File) != Size)
return 1;
return fclose(File);
}
int g = 0;
__attribute__((noinline)) void foo(char c) {
if (c == '1')
g++;
else
g--;
}
/* This function is not profiled */
__attribute__((noinline)) void bar(int M) { g += M; }
int main(int argc, const char *argv[]) {
int i;
if (argc < 4)
return 1;
const uint64_t MaxSize = 10000;
static ALIGNED(sizeof(uint64_t)) char Buffer[MaxSize];
uint64_t Size = __llvm_profile_get_size_for_buffer();
if (Size > MaxSize)
return 1;
/* Start profiling. */
__llvm_profile_reset_counters();
foo(argv[2][0]);
/* End profiling by freezing counters. */
if (__llvm_profile_write_buffer(Buffer))
return 1;
/* Its profile will be discarded. */
for (i = 0; i < 10; i++)
bar(1);
/* Start profiling again and merge in previously
saved counters in buffer. */
__llvm_profile_reset_counters();
__llvm_profile_merge_from_buffer(Buffer, Size);
foo(argv[3][0]);
/* End profiling */
if (__llvm_profile_write_buffer(Buffer))
return 1;
/* Its profile will be discarded. */
bar(2);
/* Now it is time to dump the profile to file. */
return dumpBuffer(argv[1], Buffer, Size);
}
// CHECK-LABEL: dumpBuffer:
// CHECK: Counters: 1
// CHECK-NEXT: Block counts: [0]
// CHECK-LABEL: foo:
// CHECK: Counters: 1
// CHECK-NEXT: Block counts: [1]
// CHECK-LABEL: bar:
// CHECK: Counters: 1
// CHECK-NEXT: Block counts: [0]
// CHECK-LABEL: main:
// CHECK: Counters: 1
// CHECK-NEXT: Block counts: [0]