public static void CoalesceLoadsAndDeclarations(NodeGraph graph)
{
for (int i = 0; i < graph.numBlocks; i++)
{
NodeBlock block = graph[i];
for (NodeList.iterator iter = block.nodes.begin(); iter.more();)
{
DNode node = iter.node;
if (node.type == NodeType.DeclareLocal)
{
// Peephole next = store(this, expr)
DDeclareLocal local = (DDeclareLocal)node;
if (node.next.type == NodeType.Store)
{
DStore store = (DStore)node.next;
if (store.getOperand(0) == local)
{
local.replaceOperand(0, store.getOperand(1));
store.removeFromUseChains();
iter.next();
block.nodes.remove(iter);
continue;
}
}
}
iter.next();
}
}
}
private void writeStore(DStore store)
{
string lhs = buildLoadStoreRef(store.getOperand(0));
string rhs = buildExpression(store.getOperand(1));
string eq = store.spop == SPOpcode.nop
? "="
: spop(store.spop) + "=";
outputLine(lhs + " " + eq + " " + rhs + ";");
}
public override void visit(DStore store)
{
store.getOperand(0).setUsedAsReference();
}
public override void visit(DStore store)
{
store.getOperand(0).setUsedAsReference();
}
private void writeStore(DStore store)
{
string lhs = buildLoadStoreRef(store.getOperand(0));
string rhs = buildExpression(store.getOperand(1));
string eq = store.spop == SPOpcode.nop
? "="
: spop(store.spop) + "=";
outputLine(lhs + " " + eq + " " + rhs + ";");
}