#include "blocks.h"
#include "optimise.h"

#define ADDRLP4 (ADDRL + P + sizeop(4));

#define MAX_VREGS 100

static void doNode(Node node);
static void cleanBlock(Block b);

static char* mergetemps()
{
    // Identify forests
    // Create list of temps.
    // Work though each forest
    // For each forest:
        // If symbol is temporary & not marked, replace with temp from list
        // If non spare in list: add temp to list.
        // At end of forest. Set index to 0.
    flow_applyToBlocks(cleanBlock);
    return NULL;
}

static void cleanBlock(Block block) {
    if (visitedThisBlock(block))
        return;
    markBlockAsVisited(block);
    Node p, last;
    last = block_lastNode(block)->x.next;
//    fprint(stderr, "Cleaning up block %d\n", block_id(b));
    for (p = block_firstNode(block); p != last; p = p->x.next) {
        doNode(p);
    }
    
}

static void doForest(Node forest) {
    // Loop through forest;
        doTree(tree);
    reset();
}

optimiser merge = {
    "merge",
    "Remaining local variables, ie. compiler generated variables are merged.",
    0,
    &mergetemps
};