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Use malloc() to get space for task arguments when compiling to AVX.

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This is to work around the LLVM bug/limitation discused in LLVM bug
10841 (http://llvm.org/bugs/show_bug.cgi?id=10841).
This commit is contained in:
Matt Pharr
2011-09-17 13:36:38 -07:00
parent 3607f3e045
commit 2405dae8e6
7 changed files with 166 additions and 10 deletions
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27
examples/tasks_gcd.cpp
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@@ -33,10 +33,20 @@
#include "taskinfo.h"
#if defined(_WIN32) || defined(_WIN64)
#define ISPC_IS_WINDOWS
#elif defined(__linux__)
#define ISPC_IS_LINUX
#elif defined(__APPLE__)
#define ISPC_IS_APPLE
#endif
/* A simple task system for ispc programs based on Apple's Grand Central
Dispatch. */
#include <dispatch/dispatch.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
static int initialized = 0;
static volatile int32_t lock = 0;
@@ -47,6 +57,8 @@ static dispatch_group_t gcdGroup;
extern "C" {
void ISPCLaunch(void *f, void *data);
void ISPCSync();
void *ISPCMalloc(int64_t size, int32_t alignment);
void ISPCFree(void *ptr);
}
@@ -97,3 +109,18 @@ void ISPCSync() {
lResetTaskInfo();
}
void *ISPCMalloc(int64_t size, int32_t alignment) {
void *mem = malloc(size + (alignment-1) + sizeof(void*));
char *amem = ((char*)mem) + sizeof(void*);
amem = amem + uint32_t(alignment - (reinterpret_cast<uint64_t>(amem) &
(alignment - 1)));
((void**)amem)[-1] = mem;
return amem;
}
void ISPCFree(void *ptr) {
free(((void**)ptr)[-1]);
}