mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*===-- EdgeProfiling.c - Support library for edge profiling --------------===*\
|
|
|*
|
|
|* The LLVM Compiler Infrastructure
|
|
|*
|
|
|* This file is distributed under the University of Illinois Open Source
|
|
|* License. See LICENSE.TXT for details.
|
|
|*
|
|
|*===----------------------------------------------------------------------===*|
|
|
|*
|
|
|* This file implements the call back routines for the edge profiling
|
|
|* instrumentation pass. This should be used with the -insert-edge-profiling
|
|
|* LLVM pass.
|
|
|*
|
|
\*===----------------------------------------------------------------------===*/
|
|
|
|
#include "Profiling.h"
|
|
#include <stdlib.h>
|
|
|
|
static unsigned *ArrayStart;
|
|
static unsigned NumElements;
|
|
|
|
/* EdgeProfAtExitHandler - When the program exits, just write out the profiling
|
|
* data.
|
|
*/
|
|
static void EdgeProfAtExitHandler() {
|
|
/* Note that if this were doing something more intelligent with the
|
|
* instrumentation, we could do some computation here to expand what we
|
|
* collected into simple edge profiles. Since we directly count each edge, we
|
|
* just write out all of the counters directly.
|
|
*/
|
|
write_profiling_data(EdgeInfo, ArrayStart, NumElements);
|
|
}
|
|
|
|
|
|
/* llvm_start_edge_profiling - This is the main entry point of the edge
|
|
* profiling library. It is responsible for setting up the atexit handler.
|
|
*/
|
|
int llvm_start_edge_profiling(int argc, const char **argv,
|
|
unsigned *arrayStart, unsigned numElements) {
|
|
int Ret = save_arguments(argc, argv);
|
|
ArrayStart = arrayStart;
|
|
NumElements = numElements;
|
|
atexit(EdgeProfAtExitHandler);
|
|
return Ret;
|
|
}
|