forked from OSchip/llvm-project
123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
//===- CRunnerUtils.cpp - Utils for MLIR execution ------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements basic functions to manipulate structured MLIR types at
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// runtime. Entities in this file are meant to be retargetable, including on
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// targets without a C++ runtime, and must be kept C compatible.
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/ExecutionEngine/CRunnerUtils.h"
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#ifndef _WIN32
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
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#include <cstdlib>
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#else
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#include <alloca.h>
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#endif
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#include <sys/time.h>
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#else
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#include "malloc.h"
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#endif // _WIN32
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#include <cinttypes>
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#include <cstdio>
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#include <string.h>
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#ifdef MLIR_CRUNNERUTILS_DEFINE_FUNCTIONS
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// Small runtime support "lib" for vector.print lowering.
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// By providing elementary printing methods only, this
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// library can remain fully unaware of low-level implementation
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// details of our vectors. Also useful for direct LLVM IR output.
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extern "C" void printI64(int64_t i) { fprintf(stdout, "%" PRId64, i); }
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extern "C" void printU64(uint64_t u) { fprintf(stdout, "%" PRIu64, u); }
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extern "C" void printF32(float f) { fprintf(stdout, "%g", f); }
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extern "C" void printF64(double d) { fprintf(stdout, "%lg", d); }
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extern "C" void printOpen() { fputs("( ", stdout); }
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extern "C" void printClose() { fputs(" )", stdout); }
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extern "C" void printComma() { fputs(", ", stdout); }
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extern "C" void printNewline() { fputc('\n', stdout); }
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extern "C" MLIR_CRUNNERUTILS_EXPORT void
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memrefCopy(int64_t elemSize, UnrankedMemRefType<char> *srcArg,
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UnrankedMemRefType<char> *dstArg) {
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DynamicMemRefType<char> src(*srcArg);
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DynamicMemRefType<char> dst(*dstArg);
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int64_t rank = src.rank;
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// Handle empty shapes -> nothing to copy.
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for (int rankp = 0; rankp < rank; ++rankp)
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if (src.sizes[rankp] == 0)
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return;
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char *srcPtr = src.data + src.offset * elemSize;
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char *dstPtr = dst.data + dst.offset * elemSize;
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if (rank == 0) {
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memcpy(dstPtr, srcPtr, elemSize);
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return;
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}
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int64_t *indices = static_cast<int64_t *>(alloca(sizeof(int64_t) * rank));
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int64_t *srcStrides = static_cast<int64_t *>(alloca(sizeof(int64_t) * rank));
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int64_t *dstStrides = static_cast<int64_t *>(alloca(sizeof(int64_t) * rank));
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// Initialize index and scale strides.
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for (int rankp = 0; rankp < rank; ++rankp) {
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indices[rankp] = 0;
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srcStrides[rankp] = src.strides[rankp] * elemSize;
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dstStrides[rankp] = dst.strides[rankp] * elemSize;
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}
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int64_t readIndex = 0, writeIndex = 0;
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for (;;) {
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// Copy over the element, byte by byte.
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memcpy(dstPtr + writeIndex, srcPtr + readIndex, elemSize);
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// Advance index and read position.
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for (int64_t axis = rank - 1; axis >= 0; --axis) {
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// Advance at current axis.
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auto newIndex = ++indices[axis];
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readIndex += srcStrides[axis];
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writeIndex += dstStrides[axis];
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// If this is a valid index, we have our next index, so continue copying.
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if (src.sizes[axis] != newIndex)
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break;
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// We reached the end of this axis. If this is axis 0, we are done.
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if (axis == 0)
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return;
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// Else, reset to 0 and undo the advancement of the linear index that
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// this axis had. Then continue with the axis one outer.
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indices[axis] = 0;
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readIndex -= src.sizes[axis] * srcStrides[axis];
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writeIndex -= dst.sizes[axis] * dstStrides[axis];
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}
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}
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}
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/// Prints GFLOPS rating.
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extern "C" void print_flops(double flops) {
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fprintf(stderr, "%lf GFLOPS\n", flops / 1.0E9);
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}
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/// Returns the number of seconds since Epoch 1970-01-01 00:00:00 +0000 (UTC).
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extern "C" double rtclock() {
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#ifndef _WIN32
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struct timeval tp;
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int stat = gettimeofday(&tp, nullptr);
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if (stat != 0)
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fprintf(stderr, "Error returning time from gettimeofday: %d\n", stat);
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return (tp.tv_sec + tp.tv_usec * 1.0e-6);
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#else
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fprintf(stderr, "Timing utility not implemented on Windows\n");
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return 0.0;
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#endif // _WIN32
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}
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#endif // MLIR_CRUNNERUTILS_DEFINE_FUNCTIONS
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