path: root/lib/CodeGen/TargetABIInfo.cpp

//===---- TargetABIInfo.cpp - Encapsulate target ABI details ----*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// These classes wrap the information about a call or function
// definition used to handle ABI compliancy.
//
//===----------------------------------------------------------------------===//

#include "ABIInfo.h"
#include "CodeGenFunction.h"
#include "clang/AST/RecordLayout.h"
#include "llvm/Type.h"

using namespace clang;
using namespace CodeGen;

ABIInfo::~ABIInfo() {}

void ABIArgInfo::dump() const {
  fprintf(stderr, "(ABIArgInfo Kind=");
  switch (TheKind) {
  case Direct:
    fprintf(stderr, "Direct");
    break;
  case Extend:
    fprintf(stderr, "Extend");
    break;
  case Ignore:
    fprintf(stderr, "Ignore");
    break;
  case Coerce:
    fprintf(stderr, "Coerce Type=");
    getCoerceToType()->print(llvm::errs());
    break;
  case Indirect:
    fprintf(stderr, "Indirect Align=%d", getIndirectAlign());
    break;
  case Expand:
    fprintf(stderr, "Expand");
    break;
  }
  fprintf(stderr, ")\n");
}

static bool isEmptyRecord(ASTContext &Context, QualType T);

/// isEmptyField - Return true iff a the field is "empty", that is it
/// is an unnamed bit-field or an (array of) empty record(s).
static bool isEmptyField(ASTContext &Context, const FieldDecl *FD) {
  if (FD->isUnnamedBitfield())
    return true;

  QualType FT = FD->getType();