mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
40114b780b
Edited comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13343 91177308-0d34-0410-b5e6-96231b3b80d8
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*===-- BlockProfiling.c - Support library for block profiling ------------===*\
|
|
|*
|
|
|* The LLVM Compiler Infrastructure
|
|
|*
|
|
|* This file was developed by the LLVM research group and is distributed under
|
|
|* the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
|*
|
|
|*===----------------------------------------------------------------------===*|
|
|
|*
|
|
|* This file implements the call back routines for the block profiling
|
|
|* instrumentation pass. This should be used with the -insert-block-profiling
|
|
|* LLVM pass.
|
|
|*
|
|
\*===----------------------------------------------------------------------===*/
|
|
|
|
#include "Profiling.h"
|
|
#include <stdlib.h>
|
|
|
|
static unsigned *ArrayStart;
|
|
static unsigned NumElements;
|
|
|
|
/* BlockProfAtExitHandler - When the program exits, just write out the profiling
|
|
* data.
|
|
*/
|
|
static void BlockProfAtExitHandler() {
|
|
/* 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 block profiles. (Or we could do it in llvm-prof.)
|
|
* Regardless, we directly count each block, so no expansion is necessary.
|
|
*/
|
|
write_profiling_data(BlockInfo, ArrayStart, NumElements);
|
|
}
|
|
|
|
|
|
/* llvm_start_block_profiling - This is the main entry point of the block
|
|
* profiling library. It is responsible for setting up the atexit handler.
|
|
*/
|
|
int llvm_start_block_profiling(int argc, const char **argv,
|
|
unsigned *arrayStart, unsigned numElements) {
|
|
int Ret = save_arguments(argc, argv);
|
|
ArrayStart = arrayStart;
|
|
NumElements = numElements;
|
|
atexit(BlockProfAtExitHandler);
|
|
return Ret;
|
|
}
|