| Stephen Hines | 4a68b1c | 2012-05-03 12:28:14 -0700 | [diff] [blame^] | 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 | #ifndef BCC_COMPILER_OPTION_H |
| 18 | #define BCC_COMPILER_OPTION_H |
| 19 | |
| 20 | #include "Config.h" |
| 21 | #include "Compiler.h" |
| 22 | |
| 23 | #include "llvm/Target/TargetOptions.h" |
| 24 | #include "llvm/Support/CodeGen.h" |
| 25 | |
| 26 | namespace bcc { |
| 27 | |
| 28 | class CompilerOption { |
| 29 | public: |
| 30 | // Constructor setup "default configuration". The "default configuration" |
| 31 | // here means the configuration for running RenderScript (more specifically, |
| 32 | // one can declare a CompilerOption object (call default constructor) and then |
| 33 | // pass to the Compiler::compiler() without any modification for RenderScript, |
| 34 | // see Script::prepareExecutable(...)). |
| 35 | // |
| 36 | // Must be invoked after calling Compiler::GlobalInitialization() at least once. |
| 37 | // |
| 38 | CompilerOption() { |
| 39 | //-- Setup options to llvm::TargetMachine --// |
| 40 | |
| 41 | //-- Setup Frame Pointer Elimination Optimization --// |
| 42 | #if defined(__HOST__) |
| 43 | // Disable frame pointer elimination optimization for X86_64 and X86 |
| 44 | if ((Compiler::getTargetArchType() == llvm::Triple::x86_64) || |
| 45 | (Compiler::getTargetArchType() == llvm::Triple::x86)) { |
| 46 | TargetOpt.NoFramePointerElim = true; |
| 47 | } else { |
| 48 | TargetOpt.NoFramePointerElim = false; |
| 49 | } |
| 50 | #elif defined(DEFAULT_X86_64_CODEGEN) |
| 51 | TargetOpt.NoFramePointerElim = true; |
| 52 | #elif defined(DEFAULT_X86_CODEGEN) |
| 53 | TargetOpt.NoFramePointerElim = true; |
| 54 | #else |
| 55 | TargetOpt.NoFramePointerElim = false; |
| 56 | #endif |
| 57 | |
| 58 | // Use hardfloat ABI |
| 59 | // |
| 60 | // TODO(all): Need to detect the CPU capability and decide whether to use |
| 61 | // softfp. To use softfp, change following 2 lines to |
| 62 | // |
| 63 | // options.FloatABIType = llvm::FloatABI::Soft; |
| 64 | // options.UseSoftFloat = true; |
| 65 | TargetOpt.FloatABIType = llvm::FloatABI::Soft; |
| 66 | TargetOpt.UseSoftFloat = false; |
| 67 | |
| 68 | //-- Setup relocation model --// |
| 69 | RelocModelOpt = llvm::Reloc::Static; |
| 70 | |
| 71 | //-- Setup code model --// |
| 72 | #if defined(__HOST__) |
| 73 | // Data address in X86_64 architecture may reside in a far-away place |
| 74 | if (Compiler::getTargetArchType() == llvm::Triple::x86_64) { |
| 75 | CodeModelOpt = llvm::CodeModel::Medium; |
| 76 | } else { |
| 77 | CodeModelOpt = llvm::CodeModel::Small; |
| 78 | } |
| 79 | #elif defined(DEFAULT_X86_64_CODEGEN) |
| 80 | CodeModelOpt = llvm::CodeModel::Medium; |
| 81 | #else |
| 82 | CodeModelOpt = llvm::CodeModel::Small; |
| 83 | #endif |
| 84 | |
| 85 | //-- Run LTO passes --// |
| 86 | RunLTO = true; |
| 87 | |
| 88 | //-- Load the result object after successful compilation --// |
| 89 | LoadAfterCompile = true; |
| 90 | } |
| 91 | |
| 92 | llvm::TargetOptions TargetOpt; |
| 93 | llvm::CodeModel::Model CodeModelOpt; |
| 94 | llvm::Reloc::Model RelocModelOpt; |
| 95 | bool RunLTO; |
| 96 | bool LoadAfterCompile; |
| 97 | |
| 98 | }; |
| 99 | |
| 100 | } // namespace bcc |
| 101 | |
| 102 | #endif // BCC_COMPILER_OPTION_H |