TargetCompilerConfigs.cpp revision 223f3fefd33e516b3f10c8755418d5dd6c1d3125 
1/*
2 * Copyright 2012, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "bcc/Support/TargetCompilerConfigs.h"
18
19using namespace bcc;
20
21//===----------------------------------------------------------------------===//
22// ARM
23//===----------------------------------------------------------------------===//
24#if defined(PROVIDE_ARM_CODEGEN)
25
26void ARMCompilerConfig::GetFeatureVector(std::vector<std::string> &pAttributes,
27                                         bool pEnableNEON) {
28#if defined(ARCH_ARM_HAVE_VFP)
29  pAttributes.push_back("+vfp3");
30#  if !defined(ARCH_ARM_HAVE_VFP_D32)
31  pAttributes.push_back("+d16");
32#  endif
33#endif
34
35#if defined(ARCH_ARM_HAVE_NEON) && !defined(DISABLE_ARCH_ARM_HAVE_NEON)
36  if (pEnableNEON) {
37    pAttributes.push_back("+neon");
38    pAttributes.push_back("+neonfp");
39  } else {
40    pAttributes.push_back("-neon");
41    pAttributes.push_back("-neonfp");
42  }
43#else
44  pAttributes.push_back("-neon");
45  pAttributes.push_back("-neonfp");
46#endif
47
48  return;
49}
50
51ARMCompilerConfig::ARMCompilerConfig()
52  : CompilerConfig(DEFAULT_ARM_TRIPLE_STRING) {
53
54  // Enable NEON by default.
55  mEnableNEON = true;
56
57  std::vector<std::string> attributes;
58  GetFeatureVector(attributes, /* pEnableNEON */mEnableNEON);
59  setFeatureString(attributes);
60
61  return;
62}
63
64bool ARMCompilerConfig::enableNEON(bool pEnable) {
65#if defined(ARCH_ARM_HAVE_NEON) && !defined(DISABLE_ARCH_ARM_HAVE_NEON)
66  if (mEnableNEON != pEnable) {
67    std::vector<std::string> attributes;
68    GetFeatureVector(attributes, pEnable);
69    setFeatureString(attributes);
70    mEnableNEON = pEnable;
71    return true;
72  }
73  // Fall-through
74#endif
75  return false;
76}
77#endif // defined(PROVIDE_ARM_CODEGEN)
78