mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*===-- OptimalEdgeProfiling.c - Support library for opt. 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-opt-edge-profiling LLVM pass.
|
|
|*
|
|
\*===----------------------------------------------------------------------===*/
|
|
|
|
#include "Profiling.h"
|
|
#include <stdlib.h>
|
|
|
|
static unsigned *ArrayStart;
|
|
static unsigned NumElements;
|
|
|
|
/* OptEdgeProfAtExitHandler - When the program exits, just write out the
|
|
* profiling data.
|
|
*/
|
|
static void OptEdgeProfAtExitHandler() {
|
|
/* Note that, although the array has a counter for each edge, not all
|
|
* counters are updated, the ones that are not used are initialised with -1.
|
|
* When loading this information the counters with value -1 have to be
|
|
* recalculated, it is guranteed that this is possible.
|
|
*/
|
|
write_profiling_data(OptEdgeInfo, ArrayStart, NumElements);
|
|
}
|
|
|
|
|
|
/* llvm_start_opt_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_opt_edge_profiling(int argc, const char **argv,
|
|
unsigned *arrayStart, unsigned numElements) {
|
|
int Ret = save_arguments(argc, argv);
|
|
ArrayStart = arrayStart;
|
|
NumElements = numElements;
|
|
atexit(OptEdgeProfAtExitHandler);
|
|
return Ret;
|
|
}
|