runtime/libprofile/LineProfiling.c

   1 /*===- LineProfiling.c - Support library for line profiling ---------------===*\
   2 |*
   3 |*                     The LLVM Compiler Infrastructure
   4 |*
   5 |* This file is distributed under the University of Illinois Open Source
   6 |* License. See LICENSE.TXT for details.
   7 |*
   8 |*===----------------------------------------------------------------------===*|
   9 |*
  10 |* This file implements the call back routines for the line profiling
  11 |* instrumentation pass. Link against this library when running code through
  12 |* the -insert-line-profiling LLVM pass.
  13 |*
  14 \*===----------------------------------------------------------------------===*/
  15
  16 #include <stdlib.h>
  17 #include <stdio.h>
  18 #include <stdint.h>
  19
  20 #include "llvm/Support/DataTypes.h"
  21
  22 /* A file in this case is a translation unit. Each .o file built with line
  23  * profiling enabled will emit to a different file. Only one file may be
  24  * started at a time.
  25  */
  26 void llvm_prof_linectr_start_file(const char *orig_filename) {
  27   printf("[%s]\n", orig_filename);
  28 }
  29
  30 /* Emit data about a counter to the data file. */
  31 void llvm_prof_linectr_emit_counter(const char *dir, const char *file,
  32                                     uint32_t line, uint32_t column,
  33                                     uint64_t *counter) {
  34   printf("%s/%s:%u:%u %ull\n", dir, file, line, column,
  35          (unsigned long long)(*counter));
  36 }
  37
  38 void llvm_prof_linectr_end_file() {
  39   printf("-----\n");
  40 }