TargetCompilerConfigs.cpp revision 80232dd16c0affb2afae01cde6c94abf23ac1ba8 
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    // FIXME(all): Turn NEON back on after debugging the rebase.
38    //attributes.push_back("+neon");
39    //attributes.push_back("+neonfp");
40    pAttributes.push_back("-neon");
41    pAttributes.push_back("-neonfp");
42  } else {
43    pAttributes.push_back("-neon");
44    pAttributes.push_back("-neonfp");
45  }
46#else
47  pAttributes.push_back("-neon");
48  pAttributes.push_back("-neonfp");
49#endif
50
51  return;
52}
53
54ARMCompilerConfig::ARMCompilerConfig()
55  : CompilerConfig(DEFAULT_ARM_TRIPLE_STRING) {
56
57  // Enable NEON by default.
58  mEnableNEON = true;
59
60  std::vector<std::string> attributes;
61  GetFeatureVector(attributes, /* pEnableNEON */mEnableNEON);
62  setFeatureString(attributes);
63
64  return;
65}
66
67bool ARMCompilerConfig::enableNEON(bool pEnable) {
68#if defined(ARCH_ARM_HAVE_NEON) && !defined(DISABLE_ARCH_ARM_HAVE_NEON)
69  if (mEnableNEON != pEnable) {
70    std::vector<std::string> attributes;
71    GetFeatureVector(attributes, pEnable);
72    setFeatureString(attributes);
73    mEnableNEON = pEnable;
74    return true;
75  }
76  // Fall-through
77#endif
78  return false;
79}
80#endif // defined(PROVIDE_ARM_CODEGEN)
81