llvm/lib/Target/Target.cpp

   1 //===-- Target.cpp --------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file implements the common infrastructure (including C bindings) for
  10 // libLLVMTarget.a, which implements target information.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm-c/Target.h"
  15 #include "llvm/Analysis/TargetLibraryInfo.h"
  16 #include "llvm/IR/DataLayout.h"
  17 #include "llvm/IR/LLVMContext.h"
  18 #include "llvm/IR/LegacyPassManager.h"
  19 #include "llvm/IR/Value.h"
  20 #include "llvm/InitializePasses.h"
  21 #include <cstring>
  22
  23 using namespace llvm;
  24
  25 // Avoid including "llvm-c/Core.h" for compile time, fwd-declare this instead.
  26 extern "C" LLVMContextRef LLVMGetGlobalContext(void);
  27
  28 inline TargetLibraryInfoImpl *unwrap(LLVMTargetLibraryInfoRef P) {
  29   return reinterpret_cast<TargetLibraryInfoImpl*>(P);
  30 }
  31
  32 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfoImpl *P) {
  33   TargetLibraryInfoImpl *X = const_cast<TargetLibraryInfoImpl*>(P);
  34   return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
  35 }
  36
  37 void llvm::initializeTarget(PassRegistry &Registry) {
  38   initializeTargetLibraryInfoWrapperPassPass(Registry);
  39   initializeTargetTransformInfoWrapperPassPass(Registry);
  40 }
  41
  42 LLVMTargetDataRef LLVMGetModuleDataLayout(LLVMModuleRef M) {
  43   return wrap(&unwrap(M)->getDataLayout());
  44 }
  45
  46 void LLVMSetModuleDataLayout(LLVMModuleRef M, LLVMTargetDataRef DL) {
  47   unwrap(M)->setDataLayout(*unwrap(DL));
  48 }
  49
  50 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
  51   return wrap(new DataLayout(StringRep));
  52 }
  53
  54 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
  55   delete unwrap(TD);
  56 }
  57
  58 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
  59                               LLVMPassManagerRef PM) {
  60   unwrap(PM)->add(new TargetLibraryInfoWrapperPass(*unwrap(TLI)));
  61 }
  62
  63 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
  64   std::string StringRep = unwrap(TD)->getStringRepresentation();
  65   return strdup(StringRep.c_str());
  66 }
  67
  68 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
  69   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
  70 }
  71
  72 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
  73   return unwrap(TD)->getPointerSize(0);
  74 }
  75
  76 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
  77   return unwrap(TD)->getPointerSize(AS);
  78 }
  79
  80 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
  81   return wrap(unwrap(TD)->getIntPtrType(*unwrap(LLVMGetGlobalContext())));
  82 }
  83
  84 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
  85   return wrap(unwrap(TD)->getIntPtrType(*unwrap(LLVMGetGlobalContext()), AS));
  86 }
  87
  88 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) {
  89   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C)));
  90 }
  91
  92 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) {
  93   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS));
  94 }
  95
  96 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
  97   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
  98 }
  99
 100 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 101   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
 102 }
 103
 104 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 105   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
 106 }
 107
 108 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 109   return unwrap(TD)->getABITypeAlign(unwrap(Ty)).value();
 110 }
 111
 112 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 113   return unwrap(TD)->getABITypeAlign(unwrap(Ty)).value();
 114 }
 115
 116 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
 117   return unwrap(TD)->getPrefTypeAlign(unwrap(Ty)).value();
 118 }
 119
 120 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
 121                                         LLVMValueRef GlobalVar) {
 122   return unwrap(TD)
 123       ->getPreferredAlign(unwrap<GlobalVariable>(GlobalVar))
 124       .value();
 125 }
 126
 127 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 128                              unsigned long long Offset) {
 129   StructType *STy = unwrap<StructType>(StructTy);
 130   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
 131 }
 132
 133 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
 134                                        unsigned Element) {
 135   StructType *STy = unwrap<StructType>(StructTy);
 136   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
 137 }