f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
143 lines
4.7 KiB
C++
143 lines
4.7 KiB
C++
//===- lib/MC/MCModule.cpp - MCModule implementation ----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCModule.h"
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#include "llvm/MC/MCAtom.h"
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#include "llvm/MC/MCFunction.h"
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#include <algorithm>
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using namespace llvm;
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static bool AtomComp(const MCAtom *L, uint64_t Addr) {
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return L->getEndAddr() < Addr;
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}
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static bool AtomCompInv(uint64_t Addr, const MCAtom *R) {
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return Addr < R->getEndAddr();
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}
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void MCModule::map(MCAtom *NewAtom) {
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uint64_t Begin = NewAtom->Begin;
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assert(Begin <= NewAtom->End && "Creating MCAtom with endpoints reversed?");
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// Check for atoms already covering this range.
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AtomListTy::iterator I = std::lower_bound(atom_begin(), atom_end(),
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Begin, AtomComp);
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assert((I == atom_end() || (*I)->getBeginAddr() > NewAtom->End)
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&& "Offset range already occupied!");
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// Insert the new atom to the list.
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Atoms.insert(I, NewAtom);
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}
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MCTextAtom *MCModule::createTextAtom(uint64_t Begin, uint64_t End) {
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MCTextAtom *NewAtom = new MCTextAtom(this, Begin, End);
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map(NewAtom);
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return NewAtom;
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}
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MCDataAtom *MCModule::createDataAtom(uint64_t Begin, uint64_t End) {
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MCDataAtom *NewAtom = new MCDataAtom(this, Begin, End);
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map(NewAtom);
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return NewAtom;
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}
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// remap - Update the interval mapping for an atom.
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void MCModule::remap(MCAtom *Atom, uint64_t NewBegin, uint64_t NewEnd) {
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// Find and erase the old mapping.
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AtomListTy::iterator I = std::lower_bound(atom_begin(), atom_end(),
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Atom->Begin, AtomComp);
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assert(I != atom_end() && "Atom offset not found in module!");
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assert(*I == Atom && "Previous atom mapping was invalid!");
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Atoms.erase(I);
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// FIXME: special case NewBegin == Atom->Begin
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// Insert the new mapping.
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AtomListTy::iterator NewI = std::lower_bound(atom_begin(), atom_end(),
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NewBegin, AtomComp);
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assert((NewI == atom_end() || (*NewI)->getBeginAddr() > Atom->End)
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&& "Offset range already occupied!");
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Atoms.insert(NewI, Atom);
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// Update the atom internal bounds.
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Atom->Begin = NewBegin;
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Atom->End = NewEnd;
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}
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const MCAtom *MCModule::findAtomContaining(uint64_t Addr) const {
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AtomListTy::const_iterator I = std::lower_bound(atom_begin(), atom_end(),
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Addr, AtomComp);
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if (I != atom_end() && (*I)->getBeginAddr() <= Addr)
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return *I;
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return 0;
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}
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MCAtom *MCModule::findAtomContaining(uint64_t Addr) {
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return const_cast<MCAtom*>(
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const_cast<const MCModule *>(this)->findAtomContaining(Addr));
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}
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const MCAtom *MCModule::findFirstAtomAfter(uint64_t Addr) const {
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AtomListTy::const_iterator I = std::upper_bound(atom_begin(), atom_end(),
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Addr, AtomCompInv);
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if (I != atom_end())
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return *I;
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return 0;
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}
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MCAtom *MCModule::findFirstAtomAfter(uint64_t Addr) {
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return const_cast<MCAtom*>(
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const_cast<const MCModule *>(this)->findFirstAtomAfter(Addr));
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}
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MCFunction *MCModule::createFunction(StringRef Name) {
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Functions.push_back(new MCFunction(Name, this));
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return Functions.back();
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}
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static bool CompBBToAtom(MCBasicBlock *BB, const MCTextAtom *Atom) {
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return BB->getInsts() < Atom;
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}
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void MCModule::splitBasicBlocksForAtom(const MCTextAtom *TA,
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const MCTextAtom *NewTA) {
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BBsByAtomTy::iterator
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I = std::lower_bound(BBsByAtom.begin(), BBsByAtom.end(),
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TA, CompBBToAtom);
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for (; I != BBsByAtom.end() && (*I)->getInsts() == TA; ++I) {
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MCBasicBlock *BB = *I;
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MCBasicBlock *NewBB = &BB->getParent()->createBlock(*NewTA);
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BB->splitBasicBlock(NewBB);
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}
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}
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void MCModule::trackBBForAtom(const MCTextAtom *Atom, MCBasicBlock *BB) {
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assert(Atom == BB->getInsts() && "Text atom doesn't back the basic block!");
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BBsByAtomTy::iterator I = std::lower_bound(BBsByAtom.begin(),
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BBsByAtom.end(),
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Atom, CompBBToAtom);
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for (; I != BBsByAtom.end() && (*I)->getInsts() == Atom; ++I)
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if (*I == BB)
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return;
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BBsByAtom.insert(I, BB);
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}
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MCModule::~MCModule() {
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for (AtomListTy::iterator AI = atom_begin(),
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AE = atom_end();
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AI != AE; ++AI)
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delete *AI;
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for (FunctionListTy::iterator FI = func_begin(),
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FE = func_end();
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FI != FE; ++FI)
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delete *FI;
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}
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