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C++ Address::getAlignment方法代码示例

本文整理汇总了C++中Address::getAlignment方法的典型用法代码示例。如果您正苦于以下问题:C++ Address::getAlignment方法的具体用法?C++ Address::getAlignment怎么用?C++ Address::getAlignment使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Address的用法示例。


在下文中一共展示了Address::getAlignment方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: saved_type

DominatingValue<RValue>::saved_type
DominatingValue<RValue>::saved_type::save(CodeGenFunction &CGF, RValue rv) {
  if (rv.isScalar()) {
    llvm::Value *V = rv.getScalarVal();

    // These automatically dominate and don't need to be saved.
    if (!DominatingLLVMValue::needsSaving(V))
      return saved_type(V, ScalarLiteral);

    // Everything else needs an alloca.
    Address addr =
      CGF.CreateDefaultAlignTempAlloca(V->getType(), "saved-rvalue");
    CGF.Builder.CreateStore(V, addr);
    return saved_type(addr.getPointer(), ScalarAddress);
  }

  if (rv.isComplex()) {
    CodeGenFunction::ComplexPairTy V = rv.getComplexVal();
    llvm::Type *ComplexTy =
      llvm::StructType::get(V.first->getType(), V.second->getType(),
                            (void*) nullptr);
    Address addr = CGF.CreateDefaultAlignTempAlloca(ComplexTy, "saved-complex");
    CGF.Builder.CreateStore(V.first,
                            CGF.Builder.CreateStructGEP(addr, 0, CharUnits()));
    CharUnits offset = CharUnits::fromQuantity(
               CGF.CGM.getDataLayout().getTypeAllocSize(V.first->getType()));
    CGF.Builder.CreateStore(V.second,
                            CGF.Builder.CreateStructGEP(addr, 1, offset));
    return saved_type(addr.getPointer(), ComplexAddress);
  }

  assert(rv.isAggregate());
  Address V = rv.getAggregateAddress(); // TODO: volatile?
  if (!DominatingLLVMValue::needsSaving(V.getPointer()))
    return saved_type(V.getPointer(), AggregateLiteral,
                      V.getAlignment().getQuantity());

  Address addr =
    CGF.CreateTempAlloca(V.getType(), CGF.getPointerAlign(), "saved-rvalue");
  CGF.Builder.CreateStore(V.getPointer(), addr);
  return saved_type(addr.getPointer(), AggregateAddress,
                    V.getAlignment().getQuantity());
}
开发者ID:alessandrostone,项目名称:metashell,代码行数:43,代码来源:CGCleanup.cpp

示例2: emitMemCpy

void IRGenFunction::emitMemCpy(Address dest, Address src, llvm::Value *size) {
  // Map over to the inferior design of the LLVM intrinsic.
  emitMemCpy(dest.getAddress(), src.getAddress(), size,
             std::min(dest.getAlignment(), src.getAlignment()));
}
开发者ID:A-Goretsky,项目名称:swift,代码行数:5,代码来源:IRGenFunction.cpp

示例3: createStoreInstBefore

static void createStoreInstBefore(llvm::Value *value, Address addr,
                                  llvm::Instruction *beforeInst) {
  auto store = new llvm::StoreInst(value, addr.getPointer(), beforeInst);
  store->setAlignment(addr.getAlignment().getQuantity());
}
开发者ID:alessandrostone,项目名称:metashell,代码行数:5,代码来源:CGCleanup.cpp


注:本文中的Address::getAlignment方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。