1 // Copyright 2016, VIXL authors
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are met:
6 //
7 // * Redistributions of source code must retain the above copyright notice,
8 // this list of conditions and the following disclaimer.
9 // * Redistributions in binary form must reproduce the above copyright notice,
10 // this list of conditions and the following disclaimer in the documentation
11 // and/or other materials provided with the distribution.
12 // * Neither the name of ARM Limited nor the names of its contributors may be
13 // used to endorse or promote products derived from this software without
14 // specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
17 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
20 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27 #include <stdint.h>
28 #include <stdio.h>
29 #include <sys/time.h>
30
31 #include "aarch32/constants-aarch32.h"
32 #include "aarch32/instructions-aarch32.h"
33 #include "aarch32/macro-assembler-aarch32.h"
34
35 using namespace vixl;
36 using namespace vixl::aarch32;
37
38 static const unsigned kDefaultInstructionCount = 100000;
39
40 // This program focuses on emitting simple instructions.
41 //
42 // This code will emit a given number of 'add r0, r1, r2' in a buffer.
43 // This code therefore focuses on Emit and Operand.
benchmark(unsigned instructions,InstructionSet isa)44 void benchmark(unsigned instructions, InstructionSet isa) {
45 const unsigned buffer_size = 256 * KBytes;
46 timeval start;
47 gettimeofday(&start, NULL);
48
49 MacroAssembler masm(buffer_size);
50 masm.UseInstructionSet(isa);
51
52 #define __ masm.
53
54 for (unsigned i = 0; i < instructions; ++i) {
55 __ Add(r0, r1, Operand(r2));
56 }
57
58 masm.FinalizeCode();
59
60 timeval end;
61 gettimeofday(&end, NULL);
62 double delta = (end.tv_sec - start.tv_sec) +
63 static_cast<double>(end.tv_usec - start.tv_usec) / 1000000;
64 printf("%s: time for %d instructions: %gs\n",
65 isa == T32 ? "T32" : "A32",
66 instructions,
67 delta);
68 }
69
main(int argc,char * argv[])70 int main(int argc, char* argv[]) {
71 unsigned instructions = 0;
72
73 switch (argc) {
74 case 1:
75 instructions = kDefaultInstructionCount;
76 break;
77 case 2:
78 instructions = atoi(argv[1]);
79 break;
80 default:
81 printf("Usage: %s [#instructions]\n", argv[0]);
82 exit(1);
83 }
84
85 #ifdef VIXL_INCLUDE_TARGET_A32
86 benchmark(instructions, A32);
87 #endif
88 #ifdef VIXL_INCLUDE_TARGET_T32
89 benchmark(instructions, T32);
90 #endif
91
92 return 0;
93 }
94