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Put GEPOperator member function definition in the appropriate .cpp file

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Last commit put it in Constants.cpp instead of Operator.cpp

llvm-svn: 237960
This commit is contained in:
David Blaikie 2015-05-21 21:17:12 +00:00
parent 60f1af3ffd
commit 08dd170de1
2 changed files with 31 additions and 30 deletions
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30
lib/IR/Constants.cpp
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@ -3050,33 +3050,3 @@ Instruction *ConstantExpr::getAsInstruction() {
return BO;
}
}
bool GEPOperator::accumulateConstantOffset(const DataLayout &DL,
APInt &Offset) const {
assert(Offset.getBitWidth() ==
DL.getPointerSizeInBits(getPointerAddressSpace()) &&
"The offset must have exactly as many bits as our pointer.");
for (gep_type_iterator GTI = gep_type_begin(this), GTE = gep_type_end(this);
GTI != GTE; ++GTI) {
ConstantInt *OpC = dyn_cast<ConstantInt>(GTI.getOperand());
if (!OpC)
return false;
if (OpC->isZero())
continue;
// Handle a struct index, which adds its field offset to the pointer.
if (StructType *STy = dyn_cast<StructType>(*GTI)) {
unsigned ElementIdx = OpC->getZExtValue();
const StructLayout *SL = DL.getStructLayout(STy);
Offset += APInt(Offset.getBitWidth(), SL->getElementOffset(ElementIdx));
continue;
}
// For array or vector indices, scale the index by the size of the type.
APInt Index = OpC->getValue().sextOrTrunc(Offset.getBitWidth());
Offset += Index * APInt(Offset.getBitWidth(),
DL.getTypeAllocSize(GTI.getIndexedType()));
}
return true;
}

31
lib/IR/Operator.cpp
View File

@ -1,4 +1,5 @@
#include "llvm/IR/Operator.h"
#include "llvm/IR/GetElementPtrTypeIterator.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Type.h"
@ -10,4 +11,34 @@ Type *GEPOperator::getSourceElementType() const {
return I->getSourceElementType();
return cast<GetElementPtrConstantExpr>(this)->getSourceElementType();
}
bool GEPOperator::accumulateConstantOffset(const DataLayout &DL,
APInt &Offset) const {
assert(Offset.getBitWidth() ==
DL.getPointerSizeInBits(getPointerAddressSpace()) &&
"The offset must have exactly as many bits as our pointer.");
for (gep_type_iterator GTI = gep_type_begin(this), GTE = gep_type_end(this);
GTI != GTE; ++GTI) {
ConstantInt *OpC = dyn_cast<ConstantInt>(GTI.getOperand());
if (!OpC)
return false;
if (OpC->isZero())
continue;
// Handle a struct index, which adds its field offset to the pointer.
if (StructType *STy = dyn_cast<StructType>(*GTI)) {
unsigned ElementIdx = OpC->getZExtValue();
const StructLayout *SL = DL.getStructLayout(STy);
Offset += APInt(Offset.getBitWidth(), SL->getElementOffset(ElementIdx));
continue;
}
// For array or vector indices, scale the index by the size of the type.
APInt Index = OpC->getValue().sextOrTrunc(Offset.getBitWidth());
Offset += Index * APInt(Offset.getBitWidth(),
DL.getTypeAllocSize(GTI.getIndexedType()));
}
return true;
}
}