path: root/lib/CodeGen/CGStmt.cpp

//===--- CGStmt.cpp - Emit LLVM Code from Statements ----------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This contains code to emit Stmt nodes as LLVM code.
//
//===----------------------------------------------------------------------===//

#include "CGDebugInfo.h"
#include "CodeGenModule.h"
#include "CodeGenFunction.h"
#include "TargetInfo.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/PrettyStackTrace.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/InlineAsm.h"
#include "llvm/Intrinsics.h"
#include "llvm/Target/TargetData.h"
using namespace clang;
using namespace CodeGen;

//===----------------------------------------------------------------------===//
//                              Statement Emission
//===----------------------------------------------------------------------===//

void CodeGenFunction::EmitStopPoint(const Stmt *S) {
  if (CGDebugInfo *DI = getDebugInfo()) {
    if (isa<DeclStmt>(S))
      DI->setLocation(S->getLocEnd());
    else
      DI->setLocation(S->getLocStart());
    DI->UpdateLineDirectiveRegion(Builder);
    DI->EmitStopPoint(Builder);
  }
}

void CodeGenFunction::EmitStmt(const Stmt *S) {
  assert(S && "Null statement?");

  // Check if we can handle this without bothering to generate an
  // insert point or debug info.
  if (EmitSimpleStmt(S))
    return;

  // Check if we are generating unreachable code.
  if (!HaveInsertPoint()) {
    // If so, and the statement doesn't contain a label, then we do not need to
    // generate actual code. This is safe because (1) the current point is
    // unreachable, so we don't need t