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 //-- Load the result object after successful compilation --// 86 LoadAfterCompile = true; 87 } 88 89 llvm::TargetOptions TargetOpt; 90 llvm::CodeModel::Model CodeModelOpt; 91 llvm::Reloc::Model RelocModelOpt; 92 bool LoadAfterCompile; 93 94 }; 95 96 } // namespace bcc 97 98 #endif // BCC_COMPILER_OPTION_H 99
