#include "llvm/IR/CallSite.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Instructions.h"
-#include "llvm/IR/LeakDetector.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/Type.h"
Instruction::Instruction(Type *ty, unsigned it, Use *Ops, unsigned NumOps,
Instruction *InsertBefore)
- : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) {
- // Make sure that we get added to a basicblock
- LeakDetector::addGarbageObject(this);
+ : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(nullptr) {
// If requested, insert this instruction into a basic block...
if (InsertBefore) {
- assert(InsertBefore->getParent() &&
- "Instruction to insert before is not in a basic block!");
- InsertBefore->getParent()->getInstList().insert(InsertBefore, this);
+ BasicBlock *BB = InsertBefore->getParent();
+ assert(BB && "Instruction to insert before is not in a basic block!");
+ BB->getInstList().insert(InsertBefore->getIterator(), this);
}
}
-const DataLayout *Instruction::getDataLayout() const {
- return getParent()->getDataLayout();
-}
-
Instruction::Instruction(Type *ty, unsigned it, Use *Ops, unsigned NumOps,
BasicBlock *InsertAtEnd)
- : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) {
- // Make sure that we get added to a basicblock
- LeakDetector::addGarbageObject(this);
+ : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(nullptr) {
// append this instruction into the basic block
assert(InsertAtEnd && "Basic block to append to may not be NULL!");
// Out of line virtual method, so the vtable, etc has a home.
Instruction::~Instruction() {
- assert(Parent == 0 && "Instruction still linked in the program!");
+ assert(!Parent && "Instruction still linked in the program!");
if (hasMetadataHashEntry())
clearMetadataHashEntries();
}
void Instruction::setParent(BasicBlock *P) {
- if (getParent()) {
- if (!P) LeakDetector::addGarbageObject(this);
- } else {
- if (P) LeakDetector::removeGarbageObject(this);
- }
-
Parent = P;
}
+const Module *Instruction::getModule() const {
+ return getParent()->getModule();
+}
+
+Module *Instruction::getModule() {
+ return getParent()->getModule();
+}
+
+Function *Instruction::getFunction() { return getParent()->getParent(); }
+
+const Function *Instruction::getFunction() const {
+ return getParent()->getParent();
+}
+
void Instruction::removeFromParent() {
- getParent()->getInstList().remove(this);
+ getParent()->getInstList().remove(getIterator());
}
-void Instruction::eraseFromParent() {
- getParent()->getInstList().erase(this);
+iplist<Instruction>::iterator Instruction::eraseFromParent() {
+ return getParent()->getInstList().erase(getIterator());
}
/// insertBefore - Insert an unlinked instructions into a basic block
/// immediately before the specified instruction.
void Instruction::insertBefore(Instruction *InsertPos) {
- InsertPos->getParent()->getInstList().insert(InsertPos, this);
+ InsertPos->getParent()->getInstList().insert(InsertPos->getIterator(), this);
}
/// insertAfter - Insert an unlinked instructions into a basic block
/// immediately after the specified instruction.
void Instruction::insertAfter(Instruction *InsertPos) {
- InsertPos->getParent()->getInstList().insertAfter(InsertPos, this);
+ InsertPos->getParent()->getInstList().insertAfter(InsertPos->getIterator(),
+ this);
}
/// moveBefore - Unlink this instruction from its current basic block and
/// insert it into the basic block that MovePos lives in, right before
/// MovePos.
void Instruction::moveBefore(Instruction *MovePos) {
- MovePos->getParent()->getInstList().splice(MovePos,getParent()->getInstList(),
- this);
+ MovePos->getParent()->getInstList().splice(
+ MovePos->getIterator(), getParent()->getInstList(), getIterator());
}
/// Set or clear the unsafe-algebra flag on this instruction, which must be an
cast<FPMathOperator>(this)->setFastMathFlags(FMF);
}
+void Instruction::copyFastMathFlags(FastMathFlags FMF) {
+ assert(isa<FPMathOperator>(this) && "copying fast-math flag on invalid op");
+ cast<FPMathOperator>(this)->copyFastMathFlags(FMF);
+}
+
/// Determine whether the unsafe-algebra flag is set.
bool Instruction::hasUnsafeAlgebra() const {
- assert(isa<FPMathOperator>(this) && "setting fast-math flag on invalid op");
+ assert(isa<FPMathOperator>(this) && "getting fast-math flag on invalid op");
return cast<FPMathOperator>(this)->hasUnsafeAlgebra();
}
/// Determine whether the no-NaNs flag is set.
bool Instruction::hasNoNaNs() const {
- assert(isa<FPMathOperator>(this) && "setting fast-math flag on invalid op");
+ assert(isa<FPMathOperator>(this) && "getting fast-math flag on invalid op");
return cast<FPMathOperator>(this)->hasNoNaNs();
}
/// Determine whether the no-infs flag is set.
bool Instruction::hasNoInfs() const {
- assert(isa<FPMathOperator>(this) && "setting fast-math flag on invalid op");
+ assert(isa<FPMathOperator>(this) && "getting fast-math flag on invalid op");
return cast<FPMathOperator>(this)->hasNoInfs();
}
/// Determine whether the no-signed-zeros flag is set.
bool Instruction::hasNoSignedZeros() const {
- assert(isa<FPMathOperator>(this) && "setting fast-math flag on invalid op");
+ assert(isa<FPMathOperator>(this) && "getting fast-math flag on invalid op");
return cast<FPMathOperator>(this)->hasNoSignedZeros();
}
/// Determine whether the allow-reciprocal flag is set.
bool Instruction::hasAllowReciprocal() const {
- assert(isa<FPMathOperator>(this) && "setting fast-math flag on invalid op");
+ assert(isa<FPMathOperator>(this) && "getting fast-math flag on invalid op");
return cast<FPMathOperator>(this)->hasAllowReciprocal();
}
/// Convenience function for getting all the fast-math flags, which must be an
/// operator which supports these flags. See LangRef.html for the meaning of
-/// these flats.
+/// these flags.
FastMathFlags Instruction::getFastMathFlags() const {
- assert(isa<FPMathOperator>(this) && "setting fast-math flag on invalid op");
+ assert(isa<FPMathOperator>(this) && "getting fast-math flag on invalid op");
return cast<FPMathOperator>(this)->getFastMathFlags();
}
/// Copy I's fast-math flags
void Instruction::copyFastMathFlags(const Instruction *I) {
- setFastMathFlags(I->getFastMathFlags());
+ copyFastMathFlags(I->getFastMathFlags());
}
case Invoke: return "invoke";
case Resume: return "resume";
case Unreachable: return "unreachable";
+ case CleanupRet: return "cleanupret";
+ case CatchRet: return "catchret";
+ case CatchPad: return "catchpad";
+ case CatchSwitch: return "catchswitch";
// Standard binary operators...
case Add: return "add";
case ExtractValue: return "extractvalue";
case InsertValue: return "insertvalue";
case LandingPad: return "landingpad";
+ case CleanupPad: return "cleanuppad";
default: return "<Invalid operator> ";
}
}
+/// Return true if both instructions have the same special state
+/// This must be kept in sync with lib/Transforms/IPO/MergeFunctions.cpp.
+static bool haveSameSpecialState(const Instruction *I1, const Instruction *I2,
+ bool IgnoreAlignment = false) {
+ assert(I1->getOpcode() == I2->getOpcode() &&
+ "Can not compare special state of different instructions");
+
+ if (const LoadInst *LI = dyn_cast<LoadInst>(I1))
+ return LI->isVolatile() == cast<LoadInst>(I2)->isVolatile() &&
+ (LI->getAlignment() == cast<LoadInst>(I2)->getAlignment() ||
+ IgnoreAlignment) &&
+ LI->getOrdering() == cast<LoadInst>(I2)->getOrdering() &&
+ LI->getSynchScope() == cast<LoadInst>(I2)->getSynchScope();
+ if (const StoreInst *SI = dyn_cast<StoreInst>(I1))
+ return SI->isVolatile() == cast<StoreInst>(I2)->isVolatile() &&
+ (SI->getAlignment() == cast<StoreInst>(I2)->getAlignment() ||
+ IgnoreAlignment) &&
+ SI->getOrdering() == cast<StoreInst>(I2)->getOrdering() &&
+ SI->getSynchScope() == cast<StoreInst>(I2)->getSynchScope();
+ if (const CmpInst *CI = dyn_cast<CmpInst>(I1))
+ return CI->getPredicate() == cast<CmpInst>(I2)->getPredicate();
+ if (const CallInst *CI = dyn_cast<CallInst>(I1))
+ return CI->isTailCall() == cast<CallInst>(I2)->isTailCall() &&
+ CI->getCallingConv() == cast<CallInst>(I2)->getCallingConv() &&
+ CI->getAttributes() == cast<CallInst>(I2)->getAttributes() &&
+ CI->hasIdenticalOperandBundleSchema(*cast<CallInst>(I2));
+ if (const InvokeInst *CI = dyn_cast<InvokeInst>(I1))
+ return CI->getCallingConv() == cast<InvokeInst>(I2)->getCallingConv() &&
+ CI->getAttributes() == cast<InvokeInst>(I2)->getAttributes() &&
+ CI->hasIdenticalOperandBundleSchema(*cast<InvokeInst>(I2));
+ if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(I1))
+ return IVI->getIndices() == cast<InsertValueInst>(I2)->getIndices();
+ if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(I1))
+ return EVI->getIndices() == cast<ExtractValueInst>(I2)->getIndices();
+ if (const FenceInst *FI = dyn_cast<FenceInst>(I1))
+ return FI->getOrdering() == cast<FenceInst>(I2)->getOrdering() &&
+ FI->getSynchScope() == cast<FenceInst>(I2)->getSynchScope();
+ if (const AtomicCmpXchgInst *CXI = dyn_cast<AtomicCmpXchgInst>(I1))
+ return CXI->isVolatile() == cast<AtomicCmpXchgInst>(I2)->isVolatile() &&
+ CXI->isWeak() == cast<AtomicCmpXchgInst>(I2)->isWeak() &&
+ CXI->getSuccessOrdering() ==
+ cast<AtomicCmpXchgInst>(I2)->getSuccessOrdering() &&
+ CXI->getFailureOrdering() ==
+ cast<AtomicCmpXchgInst>(I2)->getFailureOrdering() &&
+ CXI->getSynchScope() == cast<AtomicCmpXchgInst>(I2)->getSynchScope();
+ if (const AtomicRMWInst *RMWI = dyn_cast<AtomicRMWInst>(I1))
+ return RMWI->getOperation() == cast<AtomicRMWInst>(I2)->getOperation() &&
+ RMWI->isVolatile() == cast<AtomicRMWInst>(I2)->isVolatile() &&
+ RMWI->getOrdering() == cast<AtomicRMWInst>(I2)->getOrdering() &&
+ RMWI->getSynchScope() == cast<AtomicRMWInst>(I2)->getSynchScope();
+
+ return true;
+}
+
/// isIdenticalTo - Return true if the specified instruction is exactly
/// identical to the current one. This means that all operands match and any
/// extra information (e.g. load is volatile) agree.
getType() != I->getType())
return false;
+ // If both instructions have no operands, they are identical.
+ if (getNumOperands() == 0 && I->getNumOperands() == 0)
+ return haveSameSpecialState(this, I);
+
// We have two instructions of identical opcode and #operands. Check to see
// if all operands are the same.
if (!std::equal(op_begin(), op_end(), I->op_begin()))
return false;
- // Check special state that is a part of some instructions.
- if (const LoadInst *LI = dyn_cast<LoadInst>(this))
- return LI->isVolatile() == cast<LoadInst>(I)->isVolatile() &&
- LI->getAlignment() == cast<LoadInst>(I)->getAlignment() &&
- LI->getOrdering() == cast<LoadInst>(I)->getOrdering() &&
- LI->getSynchScope() == cast<LoadInst>(I)->getSynchScope();
- if (const StoreInst *SI = dyn_cast<StoreInst>(this))
- return SI->isVolatile() == cast<StoreInst>(I)->isVolatile() &&
- SI->getAlignment() == cast<StoreInst>(I)->getAlignment() &&
- SI->getOrdering() == cast<StoreInst>(I)->getOrdering() &&
- SI->getSynchScope() == cast<StoreInst>(I)->getSynchScope();
- if (const CmpInst *CI = dyn_cast<CmpInst>(this))
- return CI->getPredicate() == cast<CmpInst>(I)->getPredicate();
- if (const CallInst *CI = dyn_cast<CallInst>(this))
- return CI->isTailCall() == cast<CallInst>(I)->isTailCall() &&
- CI->getCallingConv() == cast<CallInst>(I)->getCallingConv() &&
- CI->getAttributes() == cast<CallInst>(I)->getAttributes();
- if (const InvokeInst *CI = dyn_cast<InvokeInst>(this))
- return CI->getCallingConv() == cast<InvokeInst>(I)->getCallingConv() &&
- CI->getAttributes() == cast<InvokeInst>(I)->getAttributes();
- if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(this))
- return IVI->getIndices() == cast<InsertValueInst>(I)->getIndices();
- if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(this))
- return EVI->getIndices() == cast<ExtractValueInst>(I)->getIndices();
- if (const FenceInst *FI = dyn_cast<FenceInst>(this))
- return FI->getOrdering() == cast<FenceInst>(FI)->getOrdering() &&
- FI->getSynchScope() == cast<FenceInst>(FI)->getSynchScope();
- if (const AtomicCmpXchgInst *CXI = dyn_cast<AtomicCmpXchgInst>(this))
- return CXI->isVolatile() == cast<AtomicCmpXchgInst>(I)->isVolatile() &&
- CXI->getSuccessOrdering() ==
- cast<AtomicCmpXchgInst>(I)->getSuccessOrdering() &&
- CXI->getFailureOrdering() ==
- cast<AtomicCmpXchgInst>(I)->getFailureOrdering() &&
- CXI->getSynchScope() == cast<AtomicCmpXchgInst>(I)->getSynchScope();
- if (const AtomicRMWInst *RMWI = dyn_cast<AtomicRMWInst>(this))
- return RMWI->getOperation() == cast<AtomicRMWInst>(I)->getOperation() &&
- RMWI->isVolatile() == cast<AtomicRMWInst>(I)->isVolatile() &&
- RMWI->getOrdering() == cast<AtomicRMWInst>(I)->getOrdering() &&
- RMWI->getSynchScope() == cast<AtomicRMWInst>(I)->getSynchScope();
if (const PHINode *thisPHI = dyn_cast<PHINode>(this)) {
const PHINode *otherPHI = cast<PHINode>(I);
return std::equal(thisPHI->block_begin(), thisPHI->block_end(),
otherPHI->block_begin());
}
- return true;
+
+ return haveSameSpecialState(this, I);
}
// isSameOperationAs
getOperand(i)->getType() != I->getOperand(i)->getType())
return false;
- // Check special state that is a part of some instructions.
- if (const LoadInst *LI = dyn_cast<LoadInst>(this))
- return LI->isVolatile() == cast<LoadInst>(I)->isVolatile() &&
- (LI->getAlignment() == cast<LoadInst>(I)->getAlignment() ||
- IgnoreAlignment) &&
- LI->getOrdering() == cast<LoadInst>(I)->getOrdering() &&
- LI->getSynchScope() == cast<LoadInst>(I)->getSynchScope();
- if (const StoreInst *SI = dyn_cast<StoreInst>(this))
- return SI->isVolatile() == cast<StoreInst>(I)->isVolatile() &&
- (SI->getAlignment() == cast<StoreInst>(I)->getAlignment() ||
- IgnoreAlignment) &&
- SI->getOrdering() == cast<StoreInst>(I)->getOrdering() &&
- SI->getSynchScope() == cast<StoreInst>(I)->getSynchScope();
- if (const CmpInst *CI = dyn_cast<CmpInst>(this))
- return CI->getPredicate() == cast<CmpInst>(I)->getPredicate();
- if (const CallInst *CI = dyn_cast<CallInst>(this))
- return CI->isTailCall() == cast<CallInst>(I)->isTailCall() &&
- CI->getCallingConv() == cast<CallInst>(I)->getCallingConv() &&
- CI->getAttributes() == cast<CallInst>(I)->getAttributes();
- if (const InvokeInst *CI = dyn_cast<InvokeInst>(this))
- return CI->getCallingConv() == cast<InvokeInst>(I)->getCallingConv() &&
- CI->getAttributes() ==
- cast<InvokeInst>(I)->getAttributes();
- if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(this))
- return IVI->getIndices() == cast<InsertValueInst>(I)->getIndices();
- if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(this))
- return EVI->getIndices() == cast<ExtractValueInst>(I)->getIndices();
- if (const FenceInst *FI = dyn_cast<FenceInst>(this))
- return FI->getOrdering() == cast<FenceInst>(I)->getOrdering() &&
- FI->getSynchScope() == cast<FenceInst>(I)->getSynchScope();
- if (const AtomicCmpXchgInst *CXI = dyn_cast<AtomicCmpXchgInst>(this))
- return CXI->isVolatile() == cast<AtomicCmpXchgInst>(I)->isVolatile() &&
- CXI->getSuccessOrdering() ==
- cast<AtomicCmpXchgInst>(I)->getSuccessOrdering() &&
- CXI->getFailureOrdering() ==
- cast<AtomicCmpXchgInst>(I)->getFailureOrdering() &&
- CXI->getSynchScope() == cast<AtomicCmpXchgInst>(I)->getSynchScope();
- if (const AtomicRMWInst *RMWI = dyn_cast<AtomicRMWInst>(this))
- return RMWI->getOperation() == cast<AtomicRMWInst>(I)->getOperation() &&
- RMWI->isVolatile() == cast<AtomicRMWInst>(I)->isVolatile() &&
- RMWI->getOrdering() == cast<AtomicRMWInst>(I)->getOrdering() &&
- RMWI->getSynchScope() == cast<AtomicRMWInst>(I)->getSynchScope();
-
- return true;
+ return haveSameSpecialState(this, I, IgnoreAlignment);
}
/// isUsedOutsideOfBlock - Return true if there are any uses of I outside of the
// instructions, just check to see whether the parent of the use matches up.
const Instruction *I = cast<Instruction>(U.getUser());
const PHINode *PN = dyn_cast<PHINode>(I);
- if (PN == 0) {
+ if (!PN) {
if (I->getParent() != BB)
return true;
continue;
case Instruction::Fence: // FIXME: refine definition of mayReadFromMemory
case Instruction::AtomicCmpXchg:
case Instruction::AtomicRMW:
+ case Instruction::CatchPad:
+ case Instruction::CatchRet:
return true;
case Instruction::Call:
return !cast<CallInst>(this)->doesNotAccessMemory();
case Instruction::VAArg:
case Instruction::AtomicCmpXchg:
case Instruction::AtomicRMW:
+ case Instruction::CatchPad:
+ case Instruction::CatchRet:
return true;
case Instruction::Call:
return !cast<CallInst>(this)->onlyReadsMemory();
}
}
+bool Instruction::isAtomic() const {
+ switch (getOpcode()) {
+ default:
+ return false;
+ case Instruction::AtomicCmpXchg:
+ case Instruction::AtomicRMW:
+ case Instruction::Fence:
+ return true;
+ case Instruction::Load:
+ return cast<LoadInst>(this)->getOrdering() != NotAtomic;
+ case Instruction::Store:
+ return cast<StoreInst>(this)->getOrdering() != NotAtomic;
+ }
+}
+
bool Instruction::mayThrow() const {
if (const CallInst *CI = dyn_cast<CallInst>(this))
return !CI->doesNotThrow();
+ if (const auto *CRI = dyn_cast<CleanupReturnInst>(this))
+ return CRI->unwindsToCaller();
+ if (const auto *CatchSwitch = dyn_cast<CatchSwitchInst>(this))
+ return CatchSwitch->unwindsToCaller();
return isa<ResumeInst>(this);
}
return Opcode == Xor;
}
+Instruction *Instruction::cloneImpl() const {
+ llvm_unreachable("Subclass of Instruction failed to implement cloneImpl");
+}
+
Instruction *Instruction::clone() const {
- Instruction *New = clone_impl();
+ Instruction *New = nullptr;
+ switch (getOpcode()) {
+ default:
+ llvm_unreachable("Unhandled Opcode.");
+#define HANDLE_INST(num, opc, clas) \
+ case Instruction::opc: \
+ New = cast<clas>(this)->cloneImpl(); \
+ break;
+#include "llvm/IR/Instruction.def"
+#undef HANDLE_INST
+ }
+
New->SubclassOptionalData = SubclassOptionalData;
if (!hasMetadata())
return New;
// Otherwise, enumerate and copy over metadata from the old instruction to the
// new one.
- SmallVector<std::pair<unsigned, MDNode*>, 4> TheMDs;
+ SmallVector<std::pair<unsigned, MDNode *>, 4> TheMDs;
getAllMetadataOtherThanDebugLoc(TheMDs);
for (const auto &MD : TheMDs)
New->setMetadata(MD.first, MD.second);
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