void Optimize(FunctionSymbol fsym)
{
BBlock bb;
bb = fsym->entryBB;
while (bb != NULL)
{
PeepHole(bb);
bb = bb->next;
}
bb = fsym->entryBB;
while (bb != NULL)
{
EliminateCode(bb);
ExamineJump(bb);
bb = bb->next;
}
bb = fsym->entryBB;
while (bb != NULL)
{
bb = TryMergeBBlock(bb, bb->next);
}
}
/* 优化 */
void Optimize (FunctionSymbol fsym)
{
BBlock bb;
for (bb = fsym->entryBB; bb; bb = bb->next) {
/* 窥孔优化 */
PeepHole (bb);
}
for (bb = fsym->entryBB; bb; bb = bb->next) {
/* 消除无用代码 */
EliminateCode (bb);
/* 检查跳转 */
ExamineJump (bb);
}
for (bb = fsym->entryBB; bb; ) {
/* 合并块 */
bb = TryMergeBBlock (bb, bb->next);
}
}
