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Fixed a build breakage.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26175 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-02-14 09:11:59 +00:00
parent a03a5dc7ce
commit 80e89d7d6c
1 changed files with 23 additions and 14 deletions
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37
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -1538,7 +1538,6 @@ static SDOperand getMemsetValue(SDOperand Value, MVT::ValueType VT,
Val = (Val << Shift) | Val;
Shift <<= 1;
CurVT = (MVT::ValueType)((unsigned)CurVT - 1);
assert(MVT::isInteger(CurVT));
}
return DAG.getConstant(Val, VT);
} else {
@ -1551,7 +1550,6 @@ static SDOperand getMemsetValue(SDOperand Value, MVT::ValueType VT,
DAG.getConstant(Shift, MVT::i8)), Value);
Shift <<= 1;
CurVT = (MVT::ValueType)((unsigned)CurVT - 1);
assert(MVT::isInteger(CurVT));
}
return Value;
@ -1565,10 +1563,12 @@ static SDOperand getMemBasePlusOffset(SDOperand Base, unsigned Offset,
return DAG.getNode(ISD::ADD, VT, Base, DAG.getConstant(Offset, VT));
}
/// getMemOpTypes - Determines the types of the sequence of
/// memory ops to perform memset / memcpy.
static void getMemOpTypes(std::vector<MVT::ValueType> &MemOps,
uint64_t Size, unsigned Align, TargetLowering &TLI) {
/// MeetMaxMemopRequirement - Determines if the number of memory ops required
/// to replace the memset / memcpy is below the threshold. It also returns the
/// types of the sequence of memory ops to perform memset / memcpy.
static bool MeetMaxMemopRequirement(std::vector<MVT::ValueType> &MemOps,
unsigned Limit,
uint64_t Size, unsigned Align, TargetLowering &TLI) {
MVT::ValueType VT;
if (TLI.allowsUnalignedMemoryAccesses()) {
@ -1590,21 +1590,30 @@ static void getMemOpTypes(std::vector<MVT::ValueType> &MemOps,
}
}
while (!TLI.isTypeLegal(VT)) {
VT = (MVT::ValueType)((unsigned)VT - 1);
assert(MVT::isInteger(VT));
}
MVT::ValueType LVT = MVT::i64;
while (!TLI.isTypeLegal(LVT))
LVT = (MVT::ValueType)((unsigned)LVT - 1);
assert(MVT::isInteger(LVT));
if (VT > LVT)
VT = LVT;
unsigned NumMemOps;
while (Size != 0) {
unsigned VTSize = getSizeInBits(VT) / 8;
while (VTSize > Size) {
VT = (MVT::ValueType)((unsigned)VT - 1);
assert(MVT::isInteger(VT));
VTSize >>= 1;
}
assert(MVT::isInteger(VT));
if (++NumMemOps > Limit)
return false;
MemOps.push_back(VT);
Size -= VTSize;
}
return true;
}
void SelectionDAGLowering::visitMemIntrinsic(CallInst &I, unsigned Op) {
@ -1617,8 +1626,6 @@ void SelectionDAGLowering::visitMemIntrinsic(CallInst &I, unsigned Op) {
if (ConstantSDNode *Size = dyn_cast<ConstantSDNode>(Op3)) {
std::vector<MVT::ValueType> MemOps;
getMemOpTypes(MemOps, Size->getValue(), Align, TLI);
unsigned NumMemOps = MemOps.size();
// Expand memset / memcpy to a series of load / store ops
// if the size operand falls below a certain threshold.
@ -1626,7 +1633,9 @@ void SelectionDAGLowering::visitMemIntrinsic(CallInst &I, unsigned Op) {
switch (Op) {
default: ; // Do nothing for now.
case ISD::MEMSET: {
if (NumMemOps <= TLI.getMaxStoresPerMemset()) {
if (MeetMaxMemopRequirement(MemOps, TLI.getMaxStoresPerMemset(),
Size->getValue(), Align, TLI)) {
unsigned NumMemOps = MemOps.size();
unsigned Offset = 0;
for (unsigned i = 0; i < NumMemOps; i++) {
MVT::ValueType VT = MemOps[i];