blockDebug       []BlockDebug
	pendingSlotLocs  []VarLoc
	partsByVarOffset sort.Interface
}

func (state *debugState) initializeCache(f *Func, numVars, numSlots int) {
	// One blockDebug per block. Initialized in allocBlock.
	if cap(state.blockDebug) < f.NumBlocks() {
		state.blockDebug = make([]BlockDebug, f.NumBlocks())
	} else {
		// This local variable, and the ones like it below, enable compiler
		// optimizations. Don't inline them.