public void replaceLastNonBranchWithBranch(int numInstrs, Block target)
{
if (LastInstr.isBr())
{
numInstrs++;
}
replaceLastInstrsWithBranch(numInstrs, target);
}
public bool canAppend(Block other)
{
if (other == null || other == this || getOnlyTarget() != other)
{
return(false);
}
// If it's eg. a leave, then don't merge them since it clears the stack.
return(LastInstr.isBr() || Instr.isFallThrough(LastInstr.OpCode));
}
// If last instr is a br/br.s, removes it and replaces it with a fall through
public void removeLastBr()
{
if (!LastInstr.isBr())
{
return;
}
if (fallThrough != null || (LastInstr.Operand != null && (targets == null || targets.Count != 1)))
{
throw new ApplicationException("Invalid block state when last instr is a br/br.s");
}
fallThrough = LastInstr.Operand != null ? targets[0] : null;
targets = null;
instructions.RemoveAt(instructions.Count - 1);
}