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// RUN: %clangxx_tsan %s -o %t
// RUN: %run %t 2>&1 | FileCheck %s
// bench.h needs pthread barriers which are not available on OS X
// UNSUPPORTED: darwin
#include "bench.h"
#include <memory.h>
void thread(int tid) {
volatile long x = 0;
switch (bench_mode) {
case 0:
for (int i = 0; i < bench_niter; i++)
*(volatile char *)&x = 1;
break;
case 1:
for (int i = 0; i < bench_niter; i++)
*(volatile short *)&x = 1;
break;
case 2:
for (int i = 0; i < bench_niter; i++)
*(volatile int *)&x = 1;
break;
case 3:
for (int i = 0; i < bench_niter; i++)
*(volatile long *)&x = 1;
break;
case 4:
for (int i = 0; i < bench_niter; i++)
*(volatile char *)&x;
break;
case 5:
for (int i = 0; i < bench_niter; i++)
*(volatile short *)&x;
break;
case 6:
for (int i = 0; i < bench_niter; i++)
*(volatile int *)&x;
break;
case 7:
for (int i = 0; i < bench_niter; i++)
*(volatile long *)&x;
case 8:
for (int i = 0; i < bench_niter / 10; i++) {
((volatile long *)&x)[0];
((volatile int *)&x)[0];
((volatile short *)&x)[2];
((volatile char *)&x)[6];
((volatile char *)&x)[7];
((volatile long *)&x)[0] = 1;
((volatile int *)&x)[0] = 1;
((volatile short *)&x)[2] = 1;
((volatile char *)&x)[6] = 1;
((volatile char *)&x)[7] = 1;
}
break;
case 9: {
volatile long size = sizeof(x);
for (int i = 0; i < bench_niter; i++)
memset((void *)&x, i, size);
break;
}
case 10: {
volatile long data[2] = {};
volatile long size = sizeof(data) - 2;
for (int i = 0; i < bench_niter; i++)
memset(((char *)data) + 1, i, size);
break;
}
case 11: {
volatile long data[2] = {};
for (int i = 0; i < bench_niter / 8 / 3; i++) {
for (int off = 0; off < 8; off++) {
__sanitizer_unaligned_store16(((char *)data) + off, i);
__sanitizer_unaligned_store32(((char *)data) + off, i);
__sanitizer_unaligned_store64(((char *)data) + off, i);
}
}
break;
}
#if TSAN_VECTORIZE
case 12: {
// The compiler wants to optimize all this away.
// Use volatile to prevent optimization, but then use kBlock
// to avoid the additional non-vector load in the inner loop.
// Also use only even indexes to prevent compiler from
// inserting memset.
const int kBlock = 128;
__m128i data[kBlock * 2];
__m128i *volatile vptr = data;
for (int i = 0; i < bench_niter / kBlock; i++) {
__m128i *ptr = vptr;
for (int j = 0; j < kBlock; j++)
_mm_store_si128(&ptr[j * 2], _mm_setzero_si128());
}
break;
}
#endif
}
}
void bench() {
start_thread_group(bench_nthread, thread);
}
// CHECK: DONE
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