c4cb9b64dd
1. Add a set of micro benchmarks for memory accesses, mem* functions and unaligned accesses. 2. Add support for multiple benchmarks in a single binary (or it would require 12 new benchmark binaries). 3. Remove the "clock growth" machinery, it affects the current tsan runtime by increasing size of all vector clocks, but this won't be relevant for the new tsan runtime. Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D106961
90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
// RUN: %clangxx_tsan %s -o %t
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// RUN: %run %t 2>&1 | FileCheck %s
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// bench.h needs pthread barriers which are not available on OS X
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// UNSUPPORTED: darwin
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#include "bench.h"
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#include <memory.h>
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void thread(int tid) {
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volatile long x = 0;
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switch (bench_mode) {
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case 0:
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for (int i = 0; i < bench_niter; i++)
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*(volatile char *)&x = 1;
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break;
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case 1:
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for (int i = 0; i < bench_niter; i++)
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*(volatile short *)&x = 1;
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break;
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case 2:
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for (int i = 0; i < bench_niter; i++)
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*(volatile int *)&x = 1;
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break;
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case 3:
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for (int i = 0; i < bench_niter; i++)
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*(volatile long *)&x = 1;
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break;
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case 4:
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for (int i = 0; i < bench_niter; i++)
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*(volatile char *)&x;
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break;
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case 5:
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for (int i = 0; i < bench_niter; i++)
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*(volatile short *)&x;
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break;
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case 6:
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for (int i = 0; i < bench_niter; i++)
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*(volatile int *)&x;
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break;
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case 7:
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for (int i = 0; i < bench_niter; i++)
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*(volatile long *)&x;
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case 8:
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for (int i = 0; i < bench_niter / 10; i++) {
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((volatile long *)&x)[0];
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((volatile int *)&x)[0];
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((volatile short *)&x)[2];
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((volatile char *)&x)[6];
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((volatile char *)&x)[7];
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((volatile long *)&x)[0] = 1;
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((volatile int *)&x)[0] = 1;
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((volatile short *)&x)[2] = 1;
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((volatile char *)&x)[6] = 1;
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((volatile char *)&x)[7] = 1;
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}
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break;
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case 9: {
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volatile long size = sizeof(x);
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for (int i = 0; i < bench_niter; i++)
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memset((void *)&x, i, size);
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break;
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}
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case 10: {
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volatile long data[2] = {};
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volatile long size = sizeof(data) - 2;
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for (int i = 0; i < bench_niter; i++)
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memset(((char *)data) + 1, i, size);
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break;
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}
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case 11: {
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volatile long data[2] = {};
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for (int i = 0; i < bench_niter / 8 / 3; i++) {
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for (int off = 0; off < 8; off++) {
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__sanitizer_unaligned_store16(((char *)data) + off, i);
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__sanitizer_unaligned_store32(((char *)data) + off, i);
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__sanitizer_unaligned_store64(((char *)data) + off, i);
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}
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}
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break;
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}
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}
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}
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void bench() {
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start_thread_group(bench_nthread, thread);
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}
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// CHECK: DONE
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