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Adjust to MachineConstantPool interface change: instead of keeping a

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value/alignment pair for each constant, keep a value/offset pair.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26078 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-02-09 04:46:04 +00:00
parent 04a0f60b23
commit 3029f92051
5 changed files with 60 additions and 13 deletions
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32
lib/CodeGen/MachineFunction.cpp
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@@ -112,7 +112,7 @@ MachineFunction::MachineFunction(const Function *F,
SSARegMapping = new SSARegMap();
MFInfo = 0;
FrameInfo = new MachineFrameInfo();
ConstantPool = new MachineConstantPool();
ConstantPool = new MachineConstantPool(TM.getTargetData());
BasicBlocks.Parent = this;
}
@@ -345,10 +345,38 @@ void MachineFrameInfo::dump(const MachineFunction &MF) const {
// MachineConstantPool implementation
//===----------------------------------------------------------------------===//
/// getConstantPoolIndex - Create a new entry in the constant pool or return
/// an existing one. User must specify an alignment in bytes for the object.
///
unsigned MachineConstantPool::getConstantPoolIndex(Constant *C,
unsigned Alignment) {
assert(Alignment && "Alignment must be specified!");
if (Alignment > PoolAlignment) PoolAlignment = Alignment;
// Check to see if we already have this constant.
//
// FIXME, this could be made much more efficient for large constant pools.
unsigned AlignMask = (1 << Alignment)-1;
for (unsigned i = 0, e = Constants.size(); i != e; ++i)
if (Constants[i].Val == C && (Constants[i].Offset & AlignMask) == 0)
return i;
unsigned Offset = 0;
if (!Constants.empty()) {
Offset = Constants.back().Offset;
Offset += TD.getTypeSize(Constants.back().Val->getType());
Offset = (Offset+AlignMask)&~AlignMask;
}
Constants.push_back(MachineConstantPoolEntry(C, Offset));
return Constants.size()-1;
}
void MachineConstantPool::print(std::ostream &OS) const {
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
OS << " <cp #" << i << "> is" << *(Value*)Constants[i].Val;
OS << " , align=" << Constants[i].Alignment;
OS << " , offset=" << Constants[i].Offset;
OS << "\n";
}
}