1 //===-- TargetLibraryInfo.cpp - Runtime library 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 TargetLibraryInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/Target/TargetLibraryInfo.h" 15 #include "llvm/ADT/Triple.h" 16 using namespace llvm; 17 18 // Register the default implementation. 19 INITIALIZE_PASS(TargetLibraryInfo, "targetlibinfo", 20 "Target Library Information", false, true) 21 char TargetLibraryInfo::ID = 0; 22 23 /// initialize - Initialize the set of available library functions based on the 24 /// specified target triple. This should be carefully written so that a missing 25 /// target triple gets a sane set of defaults. 26 static void initialize(TargetLibraryInfo &TLI, const Triple &T) { 27 initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry()); 28 29 30 // memset_pattern16 is only available on iOS 3.0 and Mac OS/X 10.5 and later. 31 if (T.isMacOSX()) { 32 if (T.isMacOSXVersionLT(10, 5)) 33 TLI.setUnavailable(LibFunc::memset_pattern16); 34 } else if (T.getOS() == Triple::IOS) { 35 if (T.isOSVersionLT(3, 0)) 36 TLI.setUnavailable(LibFunc::memset_pattern16); 37 } else { 38 TLI.setUnavailable(LibFunc::memset_pattern16); 39 } 40 41 // iprintf and friends are only available on XCore and TCE. 42 if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) { 43 TLI.setUnavailable(LibFunc::iprintf); 44 TLI.setUnavailable(LibFunc::siprintf); 45 TLI.setUnavailable(LibFunc::fiprintf); 46 } 47 } 48 49 50 TargetLibraryInfo::TargetLibraryInfo() : ImmutablePass(ID) { 51 // Default to everything being available. 52 memset(AvailableArray, -1, sizeof(AvailableArray)); 53 54 initialize(*this, Triple()); 55 } 56 57 TargetLibraryInfo::TargetLibraryInfo(const Triple &T) : ImmutablePass(ID) { 58 // Default to everything being available. 59 memset(AvailableArray, -1, sizeof(AvailableArray)); 60 61 initialize(*this, T); 62 } 63 64 TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI) 65 : ImmutablePass(ID) { 66 memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray)); 67 } 68 69 70 /// disableAllFunctions - This disables all builtins, which is used for options 71 /// like -fno-builtin. 72 void TargetLibraryInfo::disableAllFunctions() { 73 memset(AvailableArray, 0, sizeof(AvailableArray)); 74 } 75
