//===- InlineFunction.cpp - Code to perform function inlining -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements inlining of a function into a call site, resolving
// parameters and the return value as appropriate.
//
// The code in this file for handling inlines through invoke
// instructions preserves semantics only under some assumptions about
// the behavior of unwinders which correspond to gcc-style libUnwind
// exception personality functions. Eventually the IR will be
// improved to make this unnecessary, but until then, this code is
// marked [LIBUNWIND].
//
//===----------------------------------------------------------------------===//
#include "llvm/Transforms/Utils/Cloning.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/Instructions.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/Intrinsics.h"
#include "llvm/Attributes.h"
#include "llvm/Analysis/CallGraph.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Analysis/InstructionSimplify.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/IRBuilder.h"
using namespace llvm;
bool llvm::InlineFunction(CallInst *CI, InlineFunctionInfo &IFI) {
return InlineFunction(CallSite(CI), IFI);
}
bool llvm::InlineFunction(InvokeInst *II, InlineFunctionInfo &IFI) {
return InlineFunction(CallSite(II), IFI);
}
/// [LIBUNWIND] Look for an llvm.eh.exception call in the given block.
static EHExceptionInst *findExceptionInBlock(BasicBlock *bb) {
for (BasicBlock::iterator i = bb->begin(), e = bb->end(); i != e; i++) {
EHExceptionInst *exn = dyn_cast<EHExceptionInst>(i);
if (exn) return exn;
}
return 0;
}
/// [LIBUNWIND] Look for the 'best' llvm.eh.selector instruction for
/// the given llvm.eh.exception call.
static EHSelectorInst *findSelectorForException(EHExceptionInst *exn) {
BasicBlock *exnBlock = exn->getParent();
EHSelectorInst *outOfBlockSelector = 0;
for (Instruction::use_iterator
ui = exn->use_begin(), ue = exn->use_end(); ui != ue; ++ui) {
EHSelectorInst *sel 