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authorStephen Hines <srhines@google.com>2014-05-29 02:49:00 -0700
committerStephen Hines <srhines@google.com>2014-05-29 02:49:00 -0700
commitdce4a407a24b04eebc6a376f8e62b41aaa7b071f (patch)
treedcebc53f2b182f145a2e659393bf9a0472cedf23 /lib/IR/Instruction.cpp
parent220b921aed042f9e520c26cffd8282a94c66c3d5 (diff)
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Update LLVM for 3.5 rebase (r209712).
Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
Diffstat (limited to 'lib/IR/Instruction.cpp')
-rw-r--r--lib/IR/Instruction.cpp147
1 files changed, 59 insertions, 88 deletions
diff --git a/lib/IR/Instruction.cpp b/lib/IR/Instruction.cpp
index d31a92e031..28cc4cb9f1 100644
--- a/lib/IR/Instruction.cpp
+++ b/lib/IR/Instruction.cpp
@@ -23,7 +23,7 @@ using namespace llvm;
Instruction::Instruction(Type *ty, unsigned it, Use *Ops, unsigned NumOps,
Instruction *InsertBefore)
- : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) {
+ : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(nullptr) {
// Make sure that we get added to a basicblock
LeakDetector::addGarbageObject(this);
@@ -41,7 +41,7 @@ const DataLayout *Instruction::getDataLayout() const {
Instruction::Instruction(Type *ty, unsigned it, Use *Ops, unsigned NumOps,
BasicBlock *InsertAtEnd)
- : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) {
+ : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(nullptr) {
// Make sure that we get added to a basicblock
LeakDetector::addGarbageObject(this);
@@ -53,7 +53,7 @@ Instruction::Instruction(Type *ty, unsigned it, Use *Ops, unsigned NumOps,
// 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();
}
@@ -262,6 +262,58 @@ const char *Instruction::getOpcodeName(unsigned OpCode) {
}
}
+/// 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();
+ if (const InvokeInst *CI = dyn_cast<InvokeInst>(I1))
+ return CI->getCallingConv() == cast<InvokeInst>(I2)->getCallingConv() &&
+ CI->getAttributes() ==
+ cast<InvokeInst>(I2)->getAttributes();
+ 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->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.
@@ -284,51 +336,13 @@ bool Instruction::isIdenticalToWhenDefined(const Instruction *I) const {
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
@@ -355,50 +369,7 @@ bool Instruction::isSameOperationAs(const Instruction *I,
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
@@ -410,7 +381,7 @@ bool Instruction::isUsedOutsideOfBlock(const BasicBlock *BB) const {
// 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;