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Add code to remove dup + pop

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This commit is contained in:
de4dot 2011-10-20 12:29:19 +02:00
parent d76afbf8a1
commit 58af131485
1 changed files with 13 additions and 1 deletions
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14
blocks/cflow/DeadCodeRemover.cs
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@ -53,6 +53,16 @@ namespace de4dot.blocks.cflow {
allDeadInstructions.Add(i);
break;
case Code.Dup:
if (i + 1 >= instructions.Count)
break;
if (instructions[i + 1].OpCode.Code != Code.Pop)
break;
allDeadInstructions.Add(i);
allDeadInstructions.Add(i + 1);
i++;
break;
case Code.Leave:
case Code.Leave_S:
case Code.Endfinally:
@ -69,9 +79,11 @@ namespace de4dot.blocks.cflow {
break;
}
}
if (allDeadInstructions.Count == 0)
return false;
block.remove(allDeadInstructions);
return allDeadInstructions.Count > 0;
return true;
}
bool okInstructions(Block block, IEnumerable<int> indexes) {