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