lib/Target/Target.cpp

   1 //===-- Target.cpp --------------------------------------------------------===//
   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 common infrastructure (including C bindings) for
  11 // libLLVMTarget.a, which implements target information.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm-c/Target.h"
  16 #include "llvm-c/Initialization.h"
  17 #include "llvm/Analysis/TargetLibraryInfo.h"
  18 #include "llvm/IR/DataLayout.h"
  19 #include "llvm/IR/LLVMContext.h"
  20 #include "llvm/IR/LegacyPassManager.h"
  21 #include "llvm/IR/Value.h"
  22 #include "llvm/InitializePasses.h"
  23 #include <cstring>
  24
  25 using namespace llvm;
  26
  27 // Avoid including "llvm-c/Core.h" for compile time, fwd-declare this instead.
  28 extern "C" LLVMContextRef LLVMGetGlobalContext(void);
  29
  30 inline TargetLibraryInfoImpl *unwrap(LLVMTargetLibraryInfoRef P) {
  31   return reinterpret_cast<TargetLibraryInfoImpl*>(P);
  32 }
  33
  34 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfoImpl *P) {
  35   TargetLibraryInfoImpl *X = const_cast<TargetLibraryInfoImpl*>(P);
  36   return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
  37 }
  38
  39 void llvm::initializeTarget(PassRegistry &Registry) {
  40   initializeTargetLibraryInfoWrapperPassPass(Registry);
  41   initializeTargetTransformInfoWrapperPassPass(Registry);
  42 }
  43
  44 void LLVMInitializeTarget(LLVMPassRegistryRef R) {
  45   initializeTarget(*unwrap(R));
  46 }
  47
  48 LLVMTargetDataRef LLVMGetModuleDataLayout(LLVMModuleRef M) {
  49   return wrap(&unwrap(M)->getDataLayout());
  50 }
  51
  52 void LLVMSetModuleDataLayout(LLVMModuleRef M, LLVMTargetDataRef DL) {
  53   unwrap(M)->setDataLayout(*unwrap(DL));
  54 }
  55
  56 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
  57   return wrap(new DataLayout(StringRep));
  58 }
  59
  60 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
  61   delete unwrap(TD);
  62 }
  63
  64 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
  65                               LLVMPassManagerRef PM) {
  66   unwrap(PM)->add(new TargetLibraryInfoWrapperPass(*unwrap(TLI)));
  67 }
  68
  69 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
  70   std::string StringRep = unwrap(TD)->getStringRepresentation();
  71   return strdup(StringRep.c_str());
  72 }
  73
  74 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
  75   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
  76 }
  77
  78 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
  79   return unwrap(TD)->getPointerSize(0);
  80 }
  81
  82 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
  83   return unwrap(TD)->getPointerSize(AS);
  84 }
  85
  86 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
  87   return wrap(unwrap(TD)->getIntPtrType(*unwrap(LLVMGetGlobalContext())));
  88 }
  89
  90 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
  91   return wrap(unwrap(TD)->getIntPtrType(*unwrap(LLVMGetGlobalContext()), AS));
  92 }
  93
  94 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) {
  95   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C)));
  96 }
  97
  98 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) {
  99   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS));
 100 }
 101
 102 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 103   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
 104 }
 105
 106 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 107   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
 108 }
 109
 110 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 111   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
 112 }
 113
 114 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 115   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
 116 }
 117
 118 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 119   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
 120 }
 121
 122 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 123   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
 124 }
 125
 126 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
 127                                         LLVMValueRef GlobalVar) {
 128   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
 129 }
 130
 131 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 132                              unsigned long long Offset) {
 133   StructType *STy = unwrap<StructType>(StructTy);
 134   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
 135 }
 136
 137 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 138                                        unsigned Element) {
 139   StructType *STy = unwrap<StructType>(StructTy);
 140   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
 141 }