1 //===- CRunnerUtils.cpp - Utils for MLIR execution ------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements basic functions to manipulate structured MLIR types at
10 // runtime. Entities in this file are meant to be retargetable, including on
11 // targets without a C++ runtime, and must be kept C compatible.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "mlir/ExecutionEngine/CRunnerUtils.h"
16 
17 #ifndef _WIN32
18 #include <sys/time.h>
19 #endif // _WIN32
20 
21 #include <cinttypes>
22 #include <cstdio>
23 
24 #ifdef MLIR_CRUNNERUTILS_DEFINE_FUNCTIONS
25 
26 // Small runtime support "lib" for vector.print lowering.
27 // By providing elementary printing methods only, this
28 // library can remain fully unaware of low-level implementation
29 // details of our vectors. Also useful for direct LLVM IR output.
30 extern "C" void printI64(int64_t i) { fprintf(stdout, "%" PRId64, i); }
31 extern "C" void printU64(uint64_t u) { fprintf(stdout, "%" PRIu64, u); }
32 extern "C" void printF32(float f) { fprintf(stdout, "%g", f); }
33 extern "C" void printF64(double d) { fprintf(stdout, "%lg", d); }
34 extern "C" void printOpen() { fputs("( ", stdout); }
35 extern "C" void printClose() { fputs(" )", stdout); }
36 extern "C" void printComma() { fputs(", ", stdout); }
37 extern "C" void printNewline() { fputc('\n', stdout); }
38 
39 /// Prints GFLOPS rating.
40 extern "C" void print_flops(double flops) {
41   fprintf(stderr, "%lf GFLOPS\n", flops / 1.0E9);
42 }
43 
44 /// Returns the number of seconds since Epoch 1970-01-01 00:00:00 +0000 (UTC).
45 extern "C" double rtclock() {
46 #ifndef _WIN32
47   struct timeval tp;
48   int stat = gettimeofday(&tp, NULL);
49   if (stat != 0)
50     fprintf(stderr, "Error returning time from gettimeofday: %d\n", stat);
51   return (tp.tv_sec + tp.tv_usec * 1.0e-6);
52 #else
53   fprintf(stderr, "Timing utility not implemented on Windows\n");
54   return 0.0;
55 #endif // _WIN32
56 }
57 
58 #endif // MLIR_CRUNNERUTILS_DEFINE_FUNCTIONS
59