1 //===- SparcSubtarget.cpp - SPARC Subtarget Information -------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the SPARC specific subclass of TargetSubtarget. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "SparcSubtarget.h" 15 #include "SparcGenSubtarget.inc" 16 using namespace llvm; 17 18 // FIXME: temporary. 19 #include "llvm/Support/CommandLine.h" 20 namespace { 21 cl::opt<bool> EnableV9("enable-sparc-v9-insts", cl::Hidden, 22 cl::desc("Enable V9 instructions in the V8 target")); 23 } 24 25 SparcSubtarget::SparcSubtarget(const std::string &TT, const std::string &FS) { 26 // Set the default features. 27 IsV9 = false; 28 V8DeprecatedInsts = false; 29 IsVIS = false; 30 31 // Determine default and user specified characteristics 32 std::string CPU = "generic"; 33 34 // FIXME: autodetect host here! 35 CPU = "v9"; // What is a good way to detect V9? 36 37 // Parse features string. 38 ParseSubtargetFeatures(FS, CPU); 39 40 // Unless explicitly enabled, disable the V9 instructions. 41 if (!EnableV9) 42 IsV9 = false; 43 } 44