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Code Issues Projects Releases Wiki Activity

Factor out comparison of Instruction "special" states.

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No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209688 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Arnaud A. de Grandmaison
2014-05-27 21:35:46 +00:00
parent 54ba0dfb55
commit d4ffb93bf7
1 changed files with 55 additions and 84 deletions
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139
lib/IR/Instruction.cpp
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@@ -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