101 lines · c
1// RUN: %clang_profgen -O2 -o %t %s2// RUN: %run %t %t.profraw 1 13// RUN: llvm-profdata show --all-functions --counts %t.profraw | FileCheck %s4 5// FIXME: llvm-profdata exits with "Malformed instrumentation profile data"6// XFAIL: target={{.*windows.*}}7 8#include <stdint.h>9#include <stdio.h>10#include <stdlib.h>11#include "profile_test.h"12 13int __llvm_profile_runtime = 0;14uint64_t __llvm_profile_get_size_for_buffer(void);15int __llvm_profile_write_buffer(char *);16void __llvm_profile_reset_counters(void);17int __llvm_profile_merge_from_buffer(const char *, uint64_t);18 19int dumpBuffer(const char *FileN, const char *Buffer, uint64_t Size) {20 FILE *File = fopen(FileN, "w");21 if (!File)22 return 1;23 if (fwrite(Buffer, 1, Size, File) != Size)24 return 1;25 return fclose(File);26}27 28int g = 0;29void foo(char c) {30 if (c == '1')31 g++;32 else33 g--;34}35 36/* This function is not profiled */37void bar(int M) { g += M; }38 39int main(int argc, const char *argv[]) {40 int i;41 if (argc < 4)42 return 1;43 44 const uint64_t MaxSize = 10000;45 static ALIGNED(sizeof(uint64_t)) char Buffer[MaxSize];46 47 uint64_t Size = __llvm_profile_get_size_for_buffer();48 if (Size > MaxSize)49 return 1;50 51 /* Start profiling. */52 __llvm_profile_reset_counters();53 foo(argv[2][0]);54 /* End profiling by freezing counters. */55 if (__llvm_profile_write_buffer(Buffer))56 return 1;57 58 /* Its profile will be discarded. */59 for (i = 0; i < 10; i++)60 bar(1);61 62 /* Start profiling again and merge in previously63 saved counters in buffer. */64 __llvm_profile_reset_counters();65 __llvm_profile_merge_from_buffer(Buffer, Size);66 foo(argv[3][0]);67 /* End profiling */68 if (__llvm_profile_write_buffer(Buffer))69 return 1;70 71 /* Its profile will be discarded. */72 bar(2);73 74 /* Now it is time to dump the profile to file. */75 return dumpBuffer(argv[1], Buffer, Size);76}77 78// Not profiled79// CHECK-LABEL: dumpBuffer:80// CHECK: Counters: 381// CHECK-NEXT: Function count: 082// CHECK-NEXT: Block counts: [0, 0]83 84// Profiled with entry count == 285// CHECK-LABEL: foo:86// CHECK: Counters: 287// CHECK-NEXT: Function count: 288// CHECK-NEXT: Block counts: [2]89 90// Not profiled91// CHECK-LABEL: bar:92// CHECK: Counters: 193// CHECK-NEXT: Function count: 094// CHECK-NEXT: Block counts: []95 96// Not profiled97// CHECK-LABEL: main:98// CHECK: Counters: 699// CHECK-NEXT: Function count: 0100// CHECK-NEXT: Block counts: [0, 0, 0, 0, 0]101