| // RUN: %clang_profgen -O2 -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 <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include "profile_test.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); |
| |
| 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; |
| void foo(char c) { |
| if (c == '1') |
| g++; |
| else |
| g--; |
| } |
| |
| /* This function is not profiled */ |
| 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); |
| } |
| |
| // Not profiled |
| // CHECK-LABEL: dumpBuffer: |
| // CHECK: Counters: 3 |
| // CHECK-NEXT: Function count: 0 |
| // CHECK-NEXT: Block counts: [0, 0] |
| |
| // Profiled with entry count == 2 |
| // CHECK-LABEL: foo: |
| // CHECK: Counters: 2 |
| // CHECK-NEXT: Function count: 2 |
| // CHECK-NEXT: Block counts: [2] |
| |
| // Not profiled |
| // CHECK-LABEL: bar: |
| // CHECK: Counters: 1 |
| // CHECK-NEXT: Function count: 0 |
| // CHECK-NEXT: Block counts: [] |
| |
| // Not profiled |
| // CHECK-LABEL: main: |
| // CHECK: Counters: 6 |
| // CHECK-NEXT: Function count: 0 |
| // CHECK-NEXT: Block counts: [0, 0, 0, 0, 0] |